发明名称 |
Color imaging apparatus including a means for electronically non-linearly expanding and compressing dynamic range of an image signal |
摘要 |
A color imaging apparatus includes means for electronically non-linearly expanding or compressing the dynamic range of an image signal output therefrom. Separate output signals of respective brightness for different colors are logarithmically compressed, inverse-logarithmically converted, then linear-matrix-converted and multipled by a compression factor of brightness level for the respective color signals to produce a logarithmically compressed color signal without varying the tone.
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申请公布号 |
US4926247(A) |
申请公布日期 |
1990.05.15 |
申请号 |
US19870108516 |
申请日期 |
1987.10.14 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
NAGASAKI, TATSUO;YAMADA, HIDETOSHI;FUJIMORI, HIROYOSHI |
分类号 |
H04N9/68;H04N9/77;H04N9/82 |
主分类号 |
H04N9/68 |
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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