Automatic picture quality compensating method and apparatus

Details Automatic picture quality compensating method and apparatus Automatic picture quality compensating method and apparatus

1995-08-10

1996-12-03

Metjahic, Safet

Television

Image signal processing circuitry specific to television

348628, H04N 5208

Patent

active

055813054

ABSTRACT:
An automatic picture quality compensating method and apparatus employs a fuzzy theory to entirely analyze three components of brightness and sharpness of the picture image and signal-to-noise ratio in order to achieve an optimal profile compensation of the picture image. The method and system are defined such that the brightness is controlled by using the luminance signal level of the picture image, and the sharpness of the picture quality is controlled by using the vertical correlativity of the luminance signal. In addition, the S/N ratio can be improved by using the envelope of the video signal.

REFERENCES:
patent: 3984631 (1976-10-01), Avicola
patent: 4081836 (1978-03-01), Skinner
patent: 4376952 (1983-03-01), Troiano
patent: 4386434 (1983-05-01), Gibson
patent: 5187567 (1993-02-01), Srivastava
patent: 5191421 (1993-03-01), Hwang
patent: 5327228 (1994-07-01), Satyanarayana et al.

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