Institute for Neurophysics How to use

Principal Component Analysis

Using Principal Component Analysis, the red, green and blue color channels of an image can be transformed into three different, de-correlated channels.

Usually, most of the image variation is contained in one channel which is similar to a grayscale image; the remaining two other channels mimic (for almost all color images) the red-green and blue-yellow color channels found in the human visual system.

URL for input picture:

Type of output:

original channels, with amplitude information

channels retransformed into RGB-space

© 1994-2003 - all rights reserved.