Method and apparatus for detecting edge

Details Method and apparatus for detecting edge Method and apparatus for detecting edge

2007-09-25

2007-09-25

Bella, Matthew C. (Department: 2624)

Computer graphics processing and selective visual display system

Computer graphics processing

Shape generating

C345S611000, C345S612000, C345S649000, C345S587000

Reexamination Certificate

active

10263042

ABSTRACT:
The present invention relates to a method and apparatus for detecting an edge in an image or video. The present invention can detect an edge more quickly by detecting edge information by using the absolute values and codes of two coefficients (AC01, AC10) in the DCT domain. In addition, the present invention can detect a more rapid and accurate edge by using the edge detection method using two coefficients as a pre-filter and using the edge detection method using a spatial filter as a post-filter.

REFERENCES:
patent: 5787204 (1998-07-01), Fukuda
patent: 6148115 (2000-11-01), Mackinnon et al.
patent: 6154574 (2000-11-01), Paik et al.
patent: 2003/0053711 (2003-03-01), Kim

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