Generic Function Xor-Pixel (4 methods)

( xor-pixel < img > < row > < col > < val > )

Part of:

package ch-image

Method Summary

xor-pixel < argb-image > < t > < t > < t > 
xor-pixel < image > < t > < t > < t > 
xor-pixel < image-channel > < t > < t > < t > 
xor-pixel < rgb-image > < t > < t > < t >