Detecting method and system of compression-related noise levels

Details Detecting method and system of compression-related noise levels Detecting method and system of compression-related noise levels

2008-05-20

2011-11-01

Tran, Phuoc (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S199000

Reexamination Certificate

active

08050508

ABSTRACT:
A detecting system and method of compression-related noise levels is provided to produce a compressed index of an image. A line buffer temporarily stores a pixel (i, j) and neighboring pixels. An edge filter calculates an edge index for the pixel (i, j). A line filter calculates a line index for the pixel (i, j). A first determination device produces an edge signal according to the edge index and the line index for indicating whether the pixel (i, j) locates at an edge. A first buffer temporarily stores edge signals of the pixel (i, j) and left and right pixels. A second buffer temporarily stores line indexes of the pixel (i, j) and associated pixels. A second determination device produces a ringing signal for the pixel (i, j) according to the edge signals temporarily stored in the first buffer and the line indexes temporarily stored in the second buffer.

REFERENCES:
patent: 5844614 (1998-12-01), Chong et al.
patent: 5920356 (1999-07-01), Gupta et al.
patent: 6611295 (2003-08-01), Drouot et al.

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