contrast - Grayscale colormap for contrast enhancement

Syntax

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

Add contrast to the clown image defined by X.

load clown;
cmap = contrast(X);
image(X); 
colormap(cmap);

See Also

brighten | colormap | image

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