Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1996-03-06
1999-02-02
Hsia, Sherrie
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348607, H04N 5213
Patent
active
058672281
ABSTRACT:
In a noise reducer whose S/N improving amount is variable, as to such a region where image quality deterioration caused by the noise reducer becomes relatively apparent, and both a luminance level and a chroma level are low, the S/N improving amount thereof is decreased. To the contrary, as to such a picture having a dark high frequency range component and a small movement component, no control is made of the S/N improving amount by the above-described luminance level and chroma level, but the normal S/N improvement is sufficiently carried out.
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"Digital Signal Processing for Image", pp. 115-118, Fukinuki, Nikkan Kogyo Newspaper Publisher.
Hamada Masanori
Ishizu Atsushi
Miki Yoichiro
Nakano Masatoshi
Hsia Sherrie
Matsushita Electric - Industrial Co., Ltd.
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