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114 lines
2.5 KiB
ReStructuredText
114 lines
2.5 KiB
ReStructuredText
=======================
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The PIL.ImageOps Module
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=======================
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The PIL.ImageOps Module
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=======================
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(New in 1.1.3) The **ImageOps** module contains a number of 'ready-made'
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image processing operations. This module is somewhat experimental, and
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most operators only work on L and RGB images.
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Module Contents
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---------------
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**autocontrast(image, cutoff=0, ignore=None)**
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[`# <#PIL.ImageOps.autocontrast-function>`_]
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Maximize (normalize) image contrast. This function calculates a
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histogram of the input image, removes *cutoff* percent of the
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lightest and darkest pixels from the histogram, and remaps the image
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so that the darkest pixel becomes black (0), and the lightest
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becomes white (255).
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*image*
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*cutoff*
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*ignore*
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Returns:
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**colorize(image, black, white)**
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[`# <#PIL.ImageOps.colorize-function>`_]
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Colorize grayscale image. The *black* and *white* arguments should
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be RGB tuples; this function calculates a colour wedge mapping all
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black pixels in the source image to the first colour, and all white
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pixels to the second colour.
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*image*
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*black*
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*white*
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Returns:
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**crop(image, border=0)** [`# <#PIL.ImageOps.crop-function>`_]
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*image*
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*border*
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Returns:
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**deform(image, deformer, resample=Image.BILINEAR)**
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[`# <#PIL.ImageOps.deform-function>`_]
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*image*
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*deformer*
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*resample*
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Returns:
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**equalize(image, mask=None)** [`# <#PIL.ImageOps.equalize-function>`_]
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*image*
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*mask*
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Returns:
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**expand(image, border=0, fill=0)**
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[`# <#PIL.ImageOps.expand-function>`_]
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*image*
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*border*
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*fill*
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Returns:
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**fit(image, size, method=Image.NEAREST, bleed=0.0, centering=(0.5,
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0.5))** [`# <#PIL.ImageOps.fit-function>`_]
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Returns a sized and cropped version of the image, cropped to the
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requested aspect ratio and size.
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The **fit** function was contributed by Kevin Cazabon.
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*size*
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*method*
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*bleed*
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*centering*
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Returns:
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**flip(image)** [`# <#PIL.ImageOps.flip-function>`_]
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*image*
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Returns:
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**grayscale(image)** [`# <#PIL.ImageOps.grayscale-function>`_]
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*image*
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Returns:
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**invert(image)** [`# <#PIL.ImageOps.invert-function>`_]
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*image*
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Returns:
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**mirror(image)** [`# <#PIL.ImageOps.mirror-function>`_]
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*image*
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Returns:
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**posterize(image, bits)** [`# <#PIL.ImageOps.posterize-function>`_]
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*image*
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*bits*
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Returns:
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**solarize(image, threshold=128)**
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[`# <#PIL.ImageOps.solarize-function>`_]
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*image*
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*threshold*
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Returns:
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