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932 lines
28 KiB
HTML
932 lines
28 KiB
HTML
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>
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<html>
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<head>
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<meta http-equiv='Content-Type' content='text/html; charset=us-ascii' />
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<title>The PIL.Image Module</title>
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<link rel='stylesheet' href='effbot.css' type='text/css' />
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</head>
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<body>
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<h1>The PIL.Image Module</h1>
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<dl>
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<dt><a id='PIL.Image.blend-function' name='PIL.Image.blend-function'><b>blend(im1, im2, alpha)</b></a> [<a href='#PIL.Image.blend-function'>#</a>]</dt>
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<dd>
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<p>Creates a new image by interpolating between two input images, using
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a constant alpha.
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<pre>
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out = image1 * (1.0 - alpha) + image2 * alpha
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</pre>
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</p><dl>
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<dt><i>im1</i></dt>
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<dd>
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</dd>
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<dt><i>im2</i></dt>
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<dd>
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</dd>
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<dt><i>alpha</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.composite-function' name='PIL.Image.composite-function'><b>composite(image1, image2, mask)</b></a> [<a href='#PIL.Image.composite-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>image1</i></dt>
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<dd>
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</dd>
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<dt><i>image2</i></dt>
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<dd>
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</dd>
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<dt><i>mask</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.eval-function' name='PIL.Image.eval-function'><b>eval(image, function)</b></a> [<a href='#PIL.Image.eval-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>image</i></dt>
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<dd>
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</dd>
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<dt><i>function</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.frombuffer-function' name='PIL.Image.frombuffer-function'><b>frombuffer(mode, size, data, decoder_name="raw", *args)</b></a> [<a href='#PIL.Image.frombuffer-function'>#</a>]</dt>
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<dd>
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<p>(New in 1.1.4) Creates an image memory from pixel data in a string
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or byte buffer.
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</p><p>
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This function is similar to <a class="link" href="#PIL.Image.fromstring-function"><b>fromstring</b></a>, but uses data in
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the byte buffer, where possible. This means that changes to the
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original buffer object are reflected in this image). Not all modes
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can share memory; support modes include "L", "RGBX", "RGBA", and
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"CMYK". For other modes, this function behaves like a corresponding
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call to the <b>fromstring</b> function.
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</p><p>
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Note that this function decodes pixel data only, not entire images.
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If you have an entire image file in a string, wrap it in a
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<b>StringIO</b> object, and use <a class="link" href="#PIL.Image.open-function"><b>open</b></a> to load it.
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</p><dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>size</i></dt>
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<dd>
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</dd>
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<dt><i>data</i></dt>
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<dd>
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</dd>
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<dt><i>decoder_name</i></dt>
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<dd>
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</dd>
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<dt><i>*args</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.fromstring-function' name='PIL.Image.fromstring-function'><b>fromstring(mode, size, data, decoder_name="raw", *args)</b></a> [<a href='#PIL.Image.fromstring-function'>#</a>]</dt>
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<dd>
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<p>Creates an image memory from pixel data in a string.
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</p><p>
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In its simplest form, this function takes three arguments
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(mode, size, and unpacked pixel data).
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</p><p>
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You can also use any pixel decoder supported by PIL. For more
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information on available decoders, see the section <a href="pil-decoder.htm"><i>Writing Your Own File Decoder</i></a>.
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</p><p>
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Note that this function decodes pixel data only, not entire images.
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If you have an entire image in a string, wrap it in a
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<b>StringIO</b> object, and use <a class="link" href="#PIL.Image.open-function"><b>open</b></a> to load it.
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</p><dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>size</i></dt>
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<dd>
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</dd>
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<dt><i>data</i></dt>
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<dd>
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</dd>
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<dt><i>decoder_name</i></dt>
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<dd>
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</dd>
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<dt><i>*args</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.getmodebandnames-function' name='PIL.Image.getmodebandnames-function'><b>getmodebandnames(mode)</b></a> [<a href='#PIL.Image.getmodebandnames-function'>#</a>]</dt>
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<dd>
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<p>Gets a list of individual band names. Given a mode, this function
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returns a tuple containing the names of individual bands (use
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<a class="link" href="#PIL.Image.getmodetype-function"><b>getmodetype</b></a> to get the mode used to store each individual
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band.
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</p><dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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<dt>Raises <b>KeyError</b>:</dt><dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.getmodebands-function' name='PIL.Image.getmodebands-function'><b>getmodebands(mode)</b></a> [<a href='#PIL.Image.getmodebands-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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<dt>Raises <b>KeyError</b>:</dt><dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.getmodebase-function' name='PIL.Image.getmodebase-function'><b>getmodebase(mode)</b></a> [<a href='#PIL.Image.getmodebase-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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<dt>Raises <b>KeyError</b>:</dt><dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.getmodetype-function' name='PIL.Image.getmodetype-function'><b>getmodetype(mode)</b></a> [<a href='#PIL.Image.getmodetype-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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<dt>Raises <b>KeyError</b>:</dt><dd>
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</dd>
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</dl><br />
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</dd>
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<dt><b>Image()</b> (class) [<a href='#PIL.Image.Image-class'>#</a>]</dt>
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<dd>
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<p>This class represents an image object.</p>
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<p>For more information about this class, see <a href='#PIL.Image.Image-class'><i>The Image Class</i></a>.</p>
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</dd>
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<dt><a id='PIL.Image.init-function' name='PIL.Image.init-function'><b>init()</b></a> [<a href='#PIL.Image.init-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.isDirectory-function' name='PIL.Image.isDirectory-function'><b>isDirectory(f)</b></a> [<a href='#PIL.Image.isDirectory-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.isImageType-function' name='PIL.Image.isImageType-function'><b>isImageType(t)</b></a> [<a href='#PIL.Image.isImageType-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.isStringType-function' name='PIL.Image.isStringType-function'><b>isStringType(t)</b></a> [<a href='#PIL.Image.isStringType-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.isTupleType-function' name='PIL.Image.isTupleType-function'><b>isTupleType(t)</b></a> [<a href='#PIL.Image.isTupleType-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.merge-function' name='PIL.Image.merge-function'><b>merge(mode, bands)</b></a> [<a href='#PIL.Image.merge-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>bands</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.new-function' name='PIL.Image.new-function'><b>new(mode, size, color=0)</b></a> [<a href='#PIL.Image.new-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>size</i></dt>
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<dd>
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</dd>
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<dt><i>color</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.open-function' name='PIL.Image.open-function'><b>open(file, mode="r")</b></a> [<a href='#PIL.Image.open-function'>#</a>]</dt>
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<dd>
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<p>Opens and identifies the given image file.
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</p><p>
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This is a lazy operation; this function identifies the file, but the
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actual image data is not read from the file until you try to process
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the data (or call the <a class="link" href="#PIL.Image.Image.load-method"><b>load</b></a> method).
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</p><dl>
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<dt><i>file</i></dt>
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<dd>
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A filename (string) or a file object. The file object
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must implement <b>read</b>, <b>seek</b>, and <b>tell</b> methods,
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and be opened in binary mode.
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</dd>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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<dt>Raises <b>IOError</b>:</dt><dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.preinit-function' name='PIL.Image.preinit-function'><b>preinit()</b></a> [<a href='#PIL.Image.preinit-function'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.register_extension-function' name='PIL.Image.register_extension-function'><b>register_extension(id, extension)</b></a> [<a href='#PIL.Image.register_extension-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>id</i></dt>
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<dd>
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</dd>
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<dt><i>extension</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.register_mime-function' name='PIL.Image.register_mime-function'><b>register_mime(id, mimetype)</b></a> [<a href='#PIL.Image.register_mime-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>id</i></dt>
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<dd>
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</dd>
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<dt><i>mimetype</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.register_open-function' name='PIL.Image.register_open-function'><b>register_open(id, factory, accept=None)</b></a> [<a href='#PIL.Image.register_open-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>id</i></dt>
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<dd>
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</dd>
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<dt><i>factory</i></dt>
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<dd>
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</dd>
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<dt><i>accept</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.register_save-function' name='PIL.Image.register_save-function'><b>register_save(id, driver)</b></a> [<a href='#PIL.Image.register_save-function'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>id</i></dt>
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<dd>
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</dd>
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<dt><i>driver</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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</dl>
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<h2><a id='PIL.Image.Image-class' name='PIL.Image.Image-class'>The Image Class</a></h2>
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<dl>
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<dt><b>Image()</b> (class) [<a href='#PIL.Image.Image-class'>#</a>]</dt>
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<dd>
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</dd>
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<dt><a id='PIL.Image.Image.convert-method' name='PIL.Image.Image.convert-method'><b>convert(mode, matrix=None)</b></a> [<a href='#PIL.Image.Image.convert-method'>#</a>]</dt>
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<dd>
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<p>Returns a converted copy of this image. For the "P" mode, this
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method translates pixels through the palette. If mode is
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omitted, a mode is chosen so that all information in the image
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and the palette can be represented without a palette.
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</p><p>
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The current version supports all possible conversions between
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"L", "RGB" and "CMYK."
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</p><p>
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When translating a colour image to black and white (mode "L"),
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the library uses the ITU-R 601-2 luma transform:
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</p><p>
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<b>L = R * 299/1000 + G * 587/1000 + B * 114/1000</b>
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</p><p>
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When translating a greyscale image into a bilevel image (mode
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"1"), all non-zero values are set to 255 (white). To use other
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thresholds, use the <a class="link" href="#PIL.Image.Image.point-method"><b>point</b></a> method.
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</p><dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>matrix</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.Image.copy-method' name='PIL.Image.Image.copy-method'><b>copy()</b></a> [<a href='#PIL.Image.Image.copy-method'>#</a>]</dt>
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<dd>
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<dl>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.Image.crop-method' name='PIL.Image.Image.crop-method'><b>crop(box=None)</b></a> [<a href='#PIL.Image.Image.crop-method'>#</a>]</dt>
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<dd>
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<p>Returns a rectangular region from this image. The box is a
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4-tuple defining the left, upper, right, and lower pixel
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coordinate.
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</p><p>
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This is a lazy operation. Changes to the source image may or
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may not be reflected in the cropped image. To break the
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connection, call the <a class="link" href="#PIL.Image.Image.load-method"><b>load</b></a> method on the cropped
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copy.
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</p><dl>
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<dt><i>The</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.Image.draft-method' name='PIL.Image.Image.draft-method'><b>draft(mode, size)</b></a> [<a href='#PIL.Image.Image.draft-method'>#</a>]</dt>
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<dd>
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<p>Configures the image file loader so it returns a version of the
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image that as closely as possible matches the given mode and
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size. For example, you can use this method to convert a colour
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JPEG to greyscale while loading it, or to extract a 128x192
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version from a PCD file.
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</p><p>
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Note that this method modifies the Image object in place. If
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the image has already been loaded, this method has no effect.
|
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</p><dl>
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<dt><i>mode</i></dt>
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<dd>
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</dd>
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<dt><i>size</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.Image.filter-method' name='PIL.Image.Image.filter-method'><b>filter(filter)</b></a> [<a href='#PIL.Image.Image.filter-method'>#</a>]</dt>
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<dd>
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<p>Filters this image using the given filter. For a list of
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available filters, see the <b>ImageFilter</b> module.
|
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</p><dl>
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<dt><i>filter</i></dt>
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<dd>
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</dd>
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<dt>Returns:</dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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<dt><a id='PIL.Image.Image.fromstring-method' name='PIL.Image.Image.fromstring-method'><b>fromstring(data, decoder_name="raw", *args)</b></a> [<a href='#PIL.Image.Image.fromstring-method'>#</a>]</dt>
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<dd>
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<p>Loads this image with pixel data from a string.
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</p><p>
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This method is similar to the <a class="link" href="#PIL.Image.fromstring-function"><b>fromstring</b></a> function, but
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loads data into this image instead of creating a new image
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object.
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</p></dd>
|
|
<dt><a id='PIL.Image.Image.getbands-method' name='PIL.Image.Image.getbands-method'><b>getbands()</b></a> [<a href='#PIL.Image.Image.getbands-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Returns a tuple containing the name of each band in this image.
|
|
For example, <b>getbands</b> on an RGB image returns ("R", "G", "B").
|
|
|
|
</p><dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getbbox-method' name='PIL.Image.Image.getbbox-method'><b>getbbox()</b></a> [<a href='#PIL.Image.Image.getbbox-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getcolors-method' name='PIL.Image.Image.getcolors-method'><b>getcolors(maxcolors=256)</b></a> [<a href='#PIL.Image.Image.getcolors-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>maxcolors</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getdata-method' name='PIL.Image.Image.getdata-method'><b>getdata(band=None)</b></a> [<a href='#PIL.Image.Image.getdata-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Returns the contents of this image as a sequence object
|
|
containing pixel values. The sequence object is flattened, so
|
|
that values for line one follow directly after the values of
|
|
line zero, and so on.
|
|
</p><p>
|
|
Note that the sequence object returned by this method is an
|
|
internal PIL data type, which only supports certain sequence
|
|
operations. To convert it to an ordinary sequence (e.g. for
|
|
printing), use <b>list(im.getdata())</b>.
|
|
|
|
</p><dl>
|
|
<dt><i>band</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getextrema-method' name='PIL.Image.Image.getextrema-method'><b>getextrema()</b></a> [<a href='#PIL.Image.Image.getextrema-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getim-method' name='PIL.Image.Image.getim-method'><b>getim()</b></a> [<a href='#PIL.Image.Image.getim-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getpalette-method' name='PIL.Image.Image.getpalette-method'><b>getpalette()</b></a> [<a href='#PIL.Image.Image.getpalette-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getpixel-method' name='PIL.Image.Image.getpixel-method'><b>getpixel(xy)</b></a> [<a href='#PIL.Image.Image.getpixel-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>xy</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.getprojection-method' name='PIL.Image.Image.getprojection-method'><b>getprojection()</b></a> [<a href='#PIL.Image.Image.getprojection-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.histogram-method' name='PIL.Image.Image.histogram-method'><b>histogram(mask=None)</b></a> [<a href='#PIL.Image.Image.histogram-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Returns a histogram for the image. The histogram is returned as
|
|
a list of pixel counts, one for each pixel value in the source
|
|
image. If the image has more than one band, the histograms for
|
|
all bands are concatenated (for example, the histogram for an
|
|
"RGB" image contains 768 values).
|
|
</p><p>
|
|
A bilevel image (mode "1") is treated as a greyscale ("L") image
|
|
by this method.
|
|
</p><p>
|
|
If a mask is provided, the method returns a histogram for those
|
|
parts of the image where the mask image is non-zero. The mask
|
|
image must have the same size as the image, and be either a
|
|
bi-level image (mode "1") or a greyscale image ("L").
|
|
|
|
</p><dl>
|
|
<dt><i>mask</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.load-method' name='PIL.Image.Image.load-method'><b>load()</b></a> [<a href='#PIL.Image.Image.load-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.offset-method' name='PIL.Image.Image.offset-method'><b>offset(xoffset, yoffset=None)</b></a> [<a href='#PIL.Image.Image.offset-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>(Deprecated) Returns a copy of the image where the data has been
|
|
offset by the given distances. Data wraps around the edges. If
|
|
yoffset is omitted, it is assumed to be equal to xoffset.
|
|
</p><p>
|
|
This method is deprecated. New code should use the <b>offset</b>
|
|
function in the <b>ImageChops</b> module.
|
|
|
|
</p><dl>
|
|
<dt><i>xoffset</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>yoffset</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.paste-method' name='PIL.Image.Image.paste-method'><b>paste(im, box=None, mask=None)</b></a> [<a href='#PIL.Image.Image.paste-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Pastes another image into this image. The box argument is either
|
|
a 2-tuple giving the upper left corner, a 4-tuple defining the
|
|
left, upper, right, and lower pixel coordinate, or None (same as
|
|
(0, 0)). If a 4-tuple is given, the size of the pasted image
|
|
must match the size of the region.
|
|
</p><p>
|
|
If the modes don't match, the pasted image is converted to the
|
|
mode of this image (see the <a class="link" href="#PIL.Image.Image.convert-method"><b>convert</b></a> method for
|
|
details).
|
|
</p><p>
|
|
Instead of an image, the source can be a integer or tuple
|
|
containing pixel values. The method then fills the region
|
|
with the given colour. When creating RGB images, you can
|
|
also use colour strings as supported by the ImageColor module.
|
|
</p><p>
|
|
If a mask is given, this method updates only the regions
|
|
indicated by the mask. You can use either "1", "L" or "RGBA"
|
|
images (in the latter case, the alpha band is used as mask).
|
|
Where the mask is 255, the given image is copied as is. Where
|
|
the mask is 0, the current value is preserved. Intermediate
|
|
values can be used for transparency effects.
|
|
</p><p>
|
|
Note that if you paste an "RGBA" image, the alpha band is
|
|
ignored. You can work around this by using the same image as
|
|
both source image and mask.
|
|
|
|
</p><dl>
|
|
<dt><i>im</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>box</i></dt>
|
|
<dd>
|
|
<p>An optional 4-tuple giving the region to paste into.
|
|
If a 2-tuple is used instead, it's treated as the upper left
|
|
corner. If omitted or None, the source is pasted into the
|
|
upper left corner.
|
|
</p><p>
|
|
If an image is given as the second argument and there is no
|
|
third, the box defaults to (0, 0), and the second argument
|
|
is interpreted as a mask image.
|
|
</p></dd>
|
|
<dt><i>mask</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.point-method' name='PIL.Image.Image.point-method'><b>point(lut, mode=None)</b></a> [<a href='#PIL.Image.Image.point-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>lut</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>mode</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.putalpha-method' name='PIL.Image.Image.putalpha-method'><b>putalpha(alpha)</b></a> [<a href='#PIL.Image.Image.putalpha-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>im</i></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.putdata-method' name='PIL.Image.Image.putdata-method'><b>putdata(data, scale=1.0, offset=0.0)</b></a> [<a href='#PIL.Image.Image.putdata-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Copies pixel data to this image. This method copies data from a
|
|
sequence object into the image, starting at the upper left
|
|
corner (0, 0), and continuing until either the image or the
|
|
sequence ends. The scale and offset values are used to adjust
|
|
the sequence values: <b>pixel = value*scale + offset</b>.
|
|
|
|
</p><dl>
|
|
<dt><i>data</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>scale</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>offset</i></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.putpalette-method' name='PIL.Image.Image.putpalette-method'><b>putpalette(data)</b></a> [<a href='#PIL.Image.Image.putpalette-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>data</i></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.putpixel-method' name='PIL.Image.Image.putpixel-method'><b>putpixel(xy, value)</b></a> [<a href='#PIL.Image.Image.putpixel-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Modifies the pixel at the given position. The colour is given as
|
|
a single numerical value for single-band images, and a tuple for
|
|
multi-band images.
|
|
</p><p>
|
|
Note that this method is relatively slow. For more extensive
|
|
changes, use <a class="link" href="#PIL.Image.Image.paste-method"><b>paste</b></a> or the <b>ImageDraw</b> module
|
|
instead.
|
|
|
|
</p><dl>
|
|
<dt><i>xy</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>value</i></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.resize-method' name='PIL.Image.Image.resize-method'><b>resize(size, filter=NEAREST)</b></a> [<a href='#PIL.Image.Image.resize-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>size</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>filter</i></dt>
|
|
<dd>
|
|
An optional resampling filter. This can be
|
|
one of <b>NEAREST</b> (use nearest neighbour), <b>BILINEAR</b>
|
|
(linear interpolation in a 2x2 environment), <b>BICUBIC</b>
|
|
(cubic spline interpolation in a 4x4 environment), or
|
|
<b>ANTIALIAS</b> (a high-quality downsampling filter).
|
|
If omitted, or if the image has mode "1" or "P", it is
|
|
set <b>NEAREST</b>.
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.rotate-method' name='PIL.Image.Image.rotate-method'><b>rotate(angle, filter=NEAREST)</b></a> [<a href='#PIL.Image.Image.rotate-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>angle</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>filter</i></dt>
|
|
<dd>
|
|
An optional resampling filter. This can be
|
|
one of <b>NEAREST</b> (use nearest neighbour), <b>BILINEAR</b>
|
|
(linear interpolation in a 2x2 environment), or <b>BICUBIC</b>
|
|
(cubic spline interpolation in a 4x4 environment).
|
|
If omitted, or if the image has mode "1" or "P", it is
|
|
set <b>NEAREST</b>.
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.save-method' name='PIL.Image.Image.save-method'><b>save(file, format=None, **options)</b></a> [<a href='#PIL.Image.Image.save-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Saves this image under the given filename. If no format is
|
|
specified, the format to use is determined from the filename
|
|
extension, if possible.
|
|
</p><p>
|
|
Keyword options can be used to provide additional instructions
|
|
to the writer. If a writer doesn't recognise an option, it is
|
|
silently ignored. The available options are described later in
|
|
this handbook.
|
|
</p><p>
|
|
You can use a file object instead of a filename. In this case,
|
|
you must always specify the format. The file object must
|
|
implement the <b>seek</b>, <b>tell</b>, and <b>write</b>
|
|
methods, and be opened in binary mode.
|
|
|
|
</p><dl>
|
|
<dt><i>file</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>format</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>**options</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Raises <b>KeyError</b>:</dt><dd>
|
|
</dd>
|
|
<dt>Raises <b>IOError</b>:</dt><dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.seek-method' name='PIL.Image.Image.seek-method'><b>seek(frame)</b></a> [<a href='#PIL.Image.Image.seek-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Seeks to the given frame in this sequence file. If you seek
|
|
beyond the end of the sequence, the method raises an
|
|
<b>EOFError</b> exception. When a sequence file is opened, the
|
|
library automatically seeks to frame 0.
|
|
</p><p>
|
|
Note that in the current version of the library, most sequence
|
|
formats only allows you to seek to the next frame.
|
|
|
|
</p><dl>
|
|
<dt><i>frame</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Raises <b>EOFError</b>:</dt><dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.show-method' name='PIL.Image.Image.show-method'><b>show(title=None)</b></a> [<a href='#PIL.Image.Image.show-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Displays this image. This method is mainly intended for
|
|
debugging purposes.
|
|
</p><p>
|
|
On Unix platforms, this method saves the image to a temporary
|
|
PPM file, and calls the <b>xv</b> utility.
|
|
</p><p>
|
|
On Windows, it saves the image to a temporary BMP file, and uses
|
|
the standard BMP display utility to show it (usually Paint).
|
|
|
|
</p><dl>
|
|
<dt><i>title</i></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.split-method' name='PIL.Image.Image.split-method'><b>split()</b></a> [<a href='#PIL.Image.Image.split-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.tell-method' name='PIL.Image.Image.tell-method'><b>tell()</b></a> [<a href='#PIL.Image.Image.tell-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.thumbnail-method' name='PIL.Image.Image.thumbnail-method'><b>thumbnail(size, resample=NEAREST)</b></a> [<a href='#PIL.Image.Image.thumbnail-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Make this image into a thumbnail. This method modifies the
|
|
image to contain a thumbnail version of itself, no larger than
|
|
the given size. This method calculates an appropriate thumbnail
|
|
size to preserve the aspect of the image, calls the <a class="link" href="#PIL.Image.Image.draft-method"><b>draft</b></a> method to configure the file reader (where
|
|
applicable), and finally resizes the image.
|
|
</p><p>
|
|
Note that the bilinear and bicubic filters in the current
|
|
version of PIL are not well-suited for thumbnail generation.
|
|
You should use <b>ANTIALIAS</b> unless speed is much more
|
|
important than quality.
|
|
</p><p>
|
|
Also note that this function modifies the Image object in place.
|
|
If you need to use the full resolution image as well, apply this
|
|
method to a <a class="link" href="#PIL.Image.Image.copy-method"><b>copy</b></a> of the original image.
|
|
|
|
</p><dl>
|
|
<dt><i>size</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>resample</i></dt>
|
|
<dd>
|
|
Optional resampling filter. This can be one
|
|
of <b>NEAREST</b>, <b>BILINEAR</b>, <b>BICUBIC</b>, or
|
|
<b>ANTIALIAS</b> (best quality). If omitted, it defaults
|
|
to <b>NEAREST</b> (this will be changed to ANTIALIAS in a
|
|
future version).
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.tobitmap-method' name='PIL.Image.Image.tobitmap-method'><b>tobitmap(name="image")</b></a> [<a href='#PIL.Image.Image.tobitmap-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>name</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Raises <b>ValueError</b>:</dt><dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.tostring-method' name='PIL.Image.Image.tostring-method'><b>tostring(encoder_name="raw", *args)</b></a> [<a href='#PIL.Image.Image.tostring-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>encoder_name</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>*args</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.transform-method' name='PIL.Image.Image.transform-method'><b>transform(size, method, data, resample=NEAREST)</b></a> [<a href='#PIL.Image.Image.transform-method'>#</a>]</dt>
|
|
<dd>
|
|
<p>Transforms this image. This method creates a new image with the
|
|
given size, and the same mode as the original, and copies data
|
|
to the new image using the given transform.
|
|
</p><p>
|
|
</p><dl>
|
|
<dt><i>size</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>method</i></dt>
|
|
<dd>
|
|
The transformation method. This is one of
|
|
<b>EXTENT</b> (cut out a rectangular subregion), <b>AFFINE</b>
|
|
(affine transform), <b>PERSPECTIVE</b> (perspective
|
|
transform), <b>QUAD</b> (map a quadrilateral to a
|
|
rectangle), or <b>MESH</b> (map a number of source quadrilaterals
|
|
in one operation).
|
|
</dd>
|
|
<dt><i>data</i></dt>
|
|
<dd>
|
|
</dd>
|
|
<dt><i>resample</i></dt>
|
|
<dd>
|
|
Optional resampling filter. It can be one of
|
|
<b>NEAREST</b> (use nearest neighbour), <b>BILINEAR</b>
|
|
(linear interpolation in a 2x2 environment), or
|
|
<b>BICUBIC</b> (cubic spline interpolation in a 4x4
|
|
environment). If omitted, or if the image has mode
|
|
"1" or "P", it is set to <b>NEAREST</b>.
|
|
</dd>
|
|
<dt>Returns:</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.transpose-method' name='PIL.Image.Image.transpose-method'><b>transpose(method)</b></a> [<a href='#PIL.Image.Image.transpose-method'>#</a>]</dt>
|
|
<dd>
|
|
<dl>
|
|
<dt><i>method</i></dt>
|
|
<dd>
|
|
One of <b>FLIP_LEFT_RIGHT</b>, <b>FLIP_TOP_BOTTOM</b>,
|
|
<b>ROTATE_90</b>, <b>ROTATE_180</b>, or <b>ROTATE_270</b>.
|
|
</dd>
|
|
</dl><br />
|
|
</dd>
|
|
<dt><a id='PIL.Image.Image.verify-method' name='PIL.Image.Image.verify-method'><b>verify()</b></a> [<a href='#PIL.Image.Image.verify-method'>#</a>]</dt>
|
|
<dd>
|
|
</dd>
|
|
</dl>
|
|
</body></html>
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