The LED Reader: Continued...
Step 2b of 7: From the Edge Intensities, find all Edges in the image:
Vertical (V) edge intensities
Horizontal (H) edge intensities
The Edges of the image
Horizontal (H) edges are in Green,
Vertical (V) edges are in Red,
Blue means potentiall either H and/or V.
The reason that there are more edges on the right-hand image than either of the left is because the edges in the left-hand image are very, very light, so they don't show up very well.
Copyright (c) 2004, Blindsight Corp. All rights reserved.