1996
Peter Mattis
Several simple methods for detecting edges
Perform edge detection on the contents of the specified drawable.AMOUNT is an arbitrary constant, WRAPMODE is like displace plug-in (useful for tilable image). EDGEMODE sets the kind of matrix transform applied to the pixels, SOBEL was the method used in older versions.
unknown
Type | Name | Description |
---|---|---|
PF_INT | run-mode | The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) } |
PF_IMAGE | image | Input image (unused) |
PF_DRAWABLE | drawable | Input drawable |
PF_FLOAT | amount | Edge detection amount |
PF_INT | wrapmode | Edge detection behavior { WRAP (1), SMEAR (2), BLACK (3) } |
PF_INT | edgemode | Edge detection algorithm { SOBEL (0), PREWITT (1), GRADIENT (2), ROBERTS (3), DIFFERENTIAL (4), LAPLACE (5) } |
None