发明名称 |
Video signal noise reduction apparatus with variable S/N improving amount |
摘要 |
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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申请公布号 |
US6094233(A) |
申请公布日期 |
2000.07.25 |
申请号 |
US19970905155 |
申请日期 |
1997.08.01 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL |
发明人 |
MIKI, YOICHIRO;HAMADA, MASANORI;ISHIZU, ATSUSHI;NAKANO, MASATOSHI |
分类号 |
H04N5/21;H04N9/64;(IPC1-7):H04N5/213 |
主分类号 |
H04N5/21 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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