contrast
Grayscale colormap for contrast enhancement
Syntax
cmap = contrast(X)
cmap = contrast(X,m)
Description
The contrast function enhances the contrast
of an image. It creates a new
gray colormap, cmap, that has an approximately
equal intensity distribution. All three elements in each row are identical.
cmap = contrast(X) returns
a gray colormap that is the same length as the current colormap. If
there are NaN or Inf elements
in X the length of the colormap increases.
cmap = contrast(X,m) returns
an m-by-3 gray colormap.
Examples
Display Image with Gray Colormap
Load clown to get image X and its associated colormap, map. Display the image produced by X and map.
load clown
figure
image(X)
colormap(map)
Use contrast to return a gray colormap that is the same length as the current colormap, map. Display the image with the new colormap, cmap.
cmap = contrast(X); colormap(cmap)
Introduced before R2006a
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