These filters try to detect “edges” (boundaries) in the picture and modify the image such that only these edges retain their respective colors, while the rest of the image is turned gray. Through the use of lighting the image will then get a three-dimensional look.
There are four edge detection filters available. Each of these detects edges from a different side (possibly considering other parts of the image as being edges) and will therefore obtain a different resulting image.
You can find the filters in the -> menu. These filters are not customizable.
The image with the Bottom Edge Detection filter applied to it
Would you like to comment or contribute an update to this page?
Send feedback to the TDE Development Team