Method and apparatus for edge detection

Details Method and apparatus for edge detection Method and apparatus for edge detection

2005-03-01

2005-03-01

Mariam, Daniel (Department: 2621)

Image analysis

Pattern recognition

Feature extraction

C382S264000

Reexamination Certificate

active

06862368

ABSTRACT:
An edge detection technique combines a low-pass second derivative of an image signal, a low-pass first derivative of the image signal, and an estimation of edge frequency. The edge frequency estimation is preferably based on a ratio of a third to a first low-pass derivative of image signal. The image signal is preferably a luminance signal.

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