Module imageproc::contrast

Functions for manipulating the contrast of images.

Enums

• ThresholdType
  Options for how to treat the threshold value in threshold and threshold_mut.

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
  Stretches the contrast in an image, linearly mapping intensities in (input_lower, input_upper) to (output_lower, output_upper) and saturating values outside this input range.
• stretch_contrast_mut
  Stretches the contrast in an image, linearly mapping intensities in (input_lower, input_upper) to (output_lower, output_upper) and saturating values outside this input range.
• threshold
  Applies a threshold to each pixel in a grayscale image. The action taken depends on threshold_type - see ThresholdType.
• threshold_mut
  Applies a threshold to each pixel in a grayscale image. The action taken depends on threshold_type - see ThresholdType.