You can use these filters in any one of the eight compass directions. Using these directional filters results in a black background with white outlines of the objects in the original image.
Each filter enhances the edges composed of black-to-white transitions in a specific direction, making these edges white. AutoCAD Raster Design toolset uses the following gradient directional edge enhancements filters:
- North
- Northeast
- East
- Southeast
- South
- Southwest
- West
- Northwest