perhist man page on IRIX

perhist man page on IRIX

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PERHIST(6D)							   PERHIST(6D)

NAME
     perhist - print percent histogram values for an image

SYNOPSIS
     perhist inimage [minpercent maxpercent] [-3]

DESCRIPTION
     perhist analyzes the histogram of an image and prints two pixel values.
     1 percent of the pixels in the image will less than the first pixel value
     printed, while 99 percent of the pixels will be less than the second
     value printed.  These two pixel values can be used as arguments to
     "imgexp" to increase the contrast of an image with out loosing too much
     detail in the shadows or the highlights.  The default min percent and max
     percent values are 1 perecnt and 99 percent by default, but these values
     can be changed by specifying them on the command line.  The "-3" option
     causes the percent histogram values to be printed independently for each
     channel of a color image.

SEE ALSO
     imgexp(6D), hist(6D)

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