Diagonal correction in composite video decoder

Details Diagonal correction in composite video decoder Diagonal correction in composite video decoder

1988-05-02

1989-07-11

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 31, 358 36, H04N 978

Patent

active

048476838

ABSTRACT:
A diagonal correction method of a composite video decoder for reducing cross color errors detects the presence of diagonal luminance information in a luminance signal recovered from an encoded video signal. The recovered luminance signal is filtered to produce a diagonal correction value which is added to the recovered luminance signal as well as to a corresponding recovered chrominance signal when the diagonal luminance information is detected. The resulting luminance and chrominance signals have enhanced contrast and reduced chrominance error.

REFERENCES:
patent: 4050084 (1977-09-01), Rossi
patent: 4656501 (1987-04-01), Casey et al.

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