Each color image is broken down into a few (four or six) large sub-rectangles, each containing a bunch of little squares. Within an image, every little square should have a different color.
Each large sub-rectangle has a different Blue value. Within a sub-rectangle, each row of little squares has a different Green value and each column has a different Red value. Color values increase from left to right and from top to bottom. Colors are not dithered.
In theory every little square in a given image should be different, although some monitors don't do them justice.
This page was created by Tom Digby and is copyrighted with a fairly liberal "fair use" policy.
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