发明名称 |
IMAGING APPARATUS, IMAGING METHOD, INTEGRATED CIRCUIT, AND STORAGE MEDIUM |
摘要 |
An imaging apparatus captures a large dynamic range image of a scene including a backlit person with a blue sky background in a manner that the person's face has an appropriate luminance level without saturating the background sky. An imaging unit obtains analogue image signals through exposure control that prevents a highlight from being saturated, an A/D converter converts the analogue image signals to digital image signals, and a signal processing unit linearly increases the dynamic range of the digital image signals. The image signals with the increased dynamic range are nonlinearly compressed to have a dynamic range of 100% or less through nonlinear dynamic range compression that intensively compresses a highlight portion. The imaging apparatus with this structure first increases the dynamic range of an image and efficiently compresses the increased large dynamic range of the image.
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申请公布号 |
US2011310271(A1) |
申请公布日期 |
2011.12.22 |
申请号 |
US201113222313 |
申请日期 |
2011.08.31 |
申请人 |
YAMASHITA HARUO;ITO TAKESHI;SATO DAISUKE |
发明人 |
YAMASHITA HARUO;ITO TAKESHI;SATO DAISUKE |
分类号 |
H04N5/235 |
主分类号 |
H04N5/235 |
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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