<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'> <html> <head> <meta http-equiv='Content-Type' content='text/html; charset=us-ascii' /> <title>The PIL.ImageOps Module</title> <link rel='stylesheet' href='effbot.css' type='text/css' /> </head> <body> <h1>The PIL.ImageOps Module</h1> <p>(New in 1.1.3) The <b>ImageOps</b> module contains a number of 'ready-made' image processing operations. This module is somewhat experimental, and most operators only work on L and RGB images. </p><h2>Module Contents</h2> <dl> <dt><a id='PIL.ImageOps.autocontrast-function' name='PIL.ImageOps.autocontrast-function'><b>autocontrast(image, cutoff=0, ignore=None)</b></a> [<a href='#PIL.ImageOps.autocontrast-function'>#</a>]</dt> <dd> <p>Maximize (normalize) image contrast. This function calculates a histogram of the input image, removes <i>cutoff</i> percent of the lightest and darkest pixels from the histogram, and remaps the image so that the darkest pixel becomes black (0), and the lightest becomes white (255). </p><dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>cutoff</i></dt> <dd> </dd> <dt><i>ignore</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.colorize-function' name='PIL.ImageOps.colorize-function'><b>colorize(image, black, white)</b></a> [<a href='#PIL.ImageOps.colorize-function'>#</a>]</dt> <dd> <p>Colorize grayscale image. The <i>black</i> and <i>white</i> arguments should be RGB tuples; this function calculates a colour wedge mapping all black pixels in the source image to the first colour, and all white pixels to the second colour. </p><dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>black</i></dt> <dd> </dd> <dt><i>white</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.crop-function' name='PIL.ImageOps.crop-function'><b>crop(image, border=0)</b></a> [<a href='#PIL.ImageOps.crop-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>border</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.deform-function' name='PIL.ImageOps.deform-function'><b>deform(image, deformer, resample=Image.BILINEAR)</b></a> [<a href='#PIL.ImageOps.deform-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>deformer</i></dt> <dd> </dd> <dt><i>resample</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.equalize-function' name='PIL.ImageOps.equalize-function'><b>equalize(image, mask=None)</b></a> [<a href='#PIL.ImageOps.equalize-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>mask</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.expand-function' name='PIL.ImageOps.expand-function'><b>expand(image, border=0, fill=0)</b></a> [<a href='#PIL.ImageOps.expand-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>border</i></dt> <dd> </dd> <dt><i>fill</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.fit-function' name='PIL.ImageOps.fit-function'><b>fit(image, size, method=Image.NEAREST, bleed=0.0, centering=(0.5, 0.5))</b></a> [<a href='#PIL.ImageOps.fit-function'>#</a>]</dt> <dd> <p>Returns a sized and cropped version of the image, cropped to the requested aspect ratio and size. </p><p> The <b>fit</b> function was contributed by Kevin Cazabon. </p><dl> <dt><i>size</i></dt> <dd> </dd> <dt><i>method</i></dt> <dd> </dd> <dt><i>bleed</i></dt> <dd> </dd> <dt><i>centering</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.flip-function' name='PIL.ImageOps.flip-function'><b>flip(image)</b></a> [<a href='#PIL.ImageOps.flip-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.grayscale-function' name='PIL.ImageOps.grayscale-function'><b>grayscale(image)</b></a> [<a href='#PIL.ImageOps.grayscale-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.invert-function' name='PIL.ImageOps.invert-function'><b>invert(image)</b></a> [<a href='#PIL.ImageOps.invert-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.mirror-function' name='PIL.ImageOps.mirror-function'><b>mirror(image)</b></a> [<a href='#PIL.ImageOps.mirror-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.posterize-function' name='PIL.ImageOps.posterize-function'><b>posterize(image, bits)</b></a> [<a href='#PIL.ImageOps.posterize-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>bits</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> <dt><a id='PIL.ImageOps.solarize-function' name='PIL.ImageOps.solarize-function'><b>solarize(image, threshold=128)</b></a> [<a href='#PIL.ImageOps.solarize-function'>#</a>]</dt> <dd> <dl> <dt><i>image</i></dt> <dd> </dd> <dt><i>threshold</i></dt> <dd> </dd> <dt>Returns:</dt> <dd> </dd> </dl><br /> </dd> </dl> </body></html>