| 5.3. Edge | ||
|---|---|---|
 |
5. Edge-Detect Filters |  |
| 5.3. Edge | ||
|---|---|---|
| |
5. Edge-Detect Filters | |
You can find this filter through → → .
Figure 15.80. Applying example for the Edge filter
Original image
After applying the filter (Sobel option)
Figure 15.81. Applying examples for the Edge filter
After applying the filter (Prewitt option)
After applying the filter (Gradient option)
Edge detector offers several detection methods:
Sobel: Here, this method has no options and so is less interesting than the specific Sobel.
Prewitt: Result doesn't look different from Sobel.
Gradient: Edges are thiner, less contrasted and more blurred than Sobel.
Roberts: No evident difference from Sobel.
Differential: Edges less bright.
Laplace: Less interesting than the specific one.
Amount: a low value results in black, high-contrasted image with thin edges. A high value results in thick edges with low contrast and many colors in dark areas.
Wrap, Smear, Black: These options are not operational.
