Accuracy of the zero crossings of the second directional derivative as an edge detector.
Johan De VriendtPublished in: Multidimens. Syst. Signal Process. (1993)
Keyphrases
- zero crossing
- edge detector
- figure of merit
- edge detection
- scale space
- directional derivatives
- gray level
- gaussian filter
- morphological filtering
- gradient vector
- multiscale
- signal to noise ratio
- edge pixels
- edge map
- step edges
- differential operators
- matching criterion
- feature detectors
- computer vision
- edge detection algorithms
- edge localization