perhist(6D)
perhist - print percent histogram values for an image
Showing IRIX 6.5.30 (default release). Unchanged since IRIX 6.5.
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)