发明名称 |
OPTIMAL TONE SCALE MAPPING IN ELECTRONIC CAMERAS |
摘要 |
An improved electronic still imaging camera (10) is described wherein electronic voltage values representative of an image are transformed according to an optimum tone scale mapping gamma curve. The gamma curve utilizes a subjective element along with an element associated with scene reflectivity to optimize tone scale variations according to steps in an analog-to-digital (20) converter while reducing contouring in the image.
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申请公布号 |
CA2221281(A1) |
申请公布日期 |
1996.11.21 |
申请号 |
CA19962221281 |
申请日期 |
1996.05.16 |
申请人 |
POLAROID CORPORATION |
发明人 |
GREEN, ALLAN C.;BULLITT, JULIAN G. |
分类号 |
H04N5/202;H04N5/243;(IPC1-7):H04N5/30 |
主分类号 |
H04N5/202 |
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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