Module imageproc::contrast

Functions for manipulating the contrast of images.

Functions

cumulative_histogram	Returns the cumulative histogram of grayscale values in an 8bpp grayscale image.
equalize_histogram	Equalises the histogram of an 8bpp grayscale image. https://en.wikipedia.org/wiki/Histogram_equalization
equalize_histogram_mut	Equalises the histogram of an 8bpp grayscale image in place. https://en.wikipedia.org/wiki/Histogram_equalization
histogram	Returns the histogram of grayscale values in an 8bpp grayscale image.
match_histogram	Adjusts contrast of an 8bpp grayscale image so that its histogram is as close as possible to that of the target image.
match_histogram_mut	Adjusts contrast of an 8bpp grayscale image in place so that its histogram is as close as possible to that of the target image.
otsu_level	Returns the Otsu threshold level of an 8bpp image. This threshold will optimally binarize an image that contains two classes of pixels which have distributions with equal variances. For details see: Xu, X., et al. Pattern recognition letters 32.7 (2011)
threshold	Returns a binarized image from an input 8bpp grayscale image obtained by applying the given threshold.
threshold_mut	Mutates given image to form a binarized version produced by applying the given threshold.