Module imageproc::contrast

Functions for manipulating the contrast of images.

Functions

adaptive_threshold	Applies an adaptive threshold to an image.
equalize_histogram	Equalises the histogram of an 8bpp grayscale image. See also histogram equalization (wikipedia).
equalize_histogram_mut	Equalises the histogram of an 8bpp grayscale image in place. See also histogram equalization (wikipedia).
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.
stretch_contrast	Linearly stretches the contrast in an image, sending lower to 0u8 and upper to 2558u8.
stretch_contrast_mut	Linearly stretches the contrast in an image in place, sending lower to 0u8 and upper to 2558u8.
threshold	Returns a binarized image from an input 8bpp grayscale image obtained by applying the given threshold. Pixels with intensity equal to the threshold are assigned to the background.
threshold_mut	Mutates given image to form a binarized version produced by applying the given threshold. Pixels with intensity equal to the threshold are assigned to the background.