System information
Complementary Color
Complementary colors are colors that are 180 degrees apart on the color wheel. In the following image,
you can see that red and cyan are complementary colors, as are magenta and green, and blue and yellow.
Contrast
Adjusting contrast multiplies color values in an image to stretch the existing color channel values across a
broader or narrower portion of the spectrum. The contrast center determines the anchor point for
stretching.
Histogram of original image.
Contrast decreased with a contrast center of 0.5: the histogram is squeezed into a narrower portion of the
spectrum anchored from the center of the graph.
GLOSSARY635