System for removing color bleed in a television image adapted fo

Details System for removing color bleed in a television image adapted fo System for removing color bleed in a television image adapted fo

1997-06-26

2000-02-29

Harvey, David E.

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

358532, H04N 977

Patent

active

060315814

ABSTRACT:
An image data modification technique addresses certain image defects characteristic of still images derived from original video sources, such as television or videotape. Color bleeding, caused by an inability of chrominance signals to change from pixel to pixel as quickly as luminance signals, is addressed by processing the chrominance signal to have slopes closer to a change in the luminance signal for the same small area of the image. The technique can be employed on the image data for a single frame of video image, and does not require information from previous or subsequent frames.

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patent: 5502509 (1996-03-01), Kurashita et al.
patent: 5572246 (1996-11-01), Ellis et al.
patent: 5583579 (1996-12-01), Shim

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