发明名称 |
LIGHT SOURCE ESTIMATING DEVICE, LIGHT SOURCE ESTIMATING METHOD, AND IMAGING DEVICE AND IMAGE PROCESSING METHOD |
摘要 |
A light source estimating method for estimating the color characteristics of a light source with an unknown photographing scene from a sensor response in order to improve a color reproduction quality such as a white balance adjustment, wherein, in a projection conversion unit (6) using parameters obtained by computation that can be colorimetrically approximated from the known spectral sensitivity characteristics of an imaging means (4) with respect to a sensor response value (5) and from the assumed spectral characteristics of a test light source (1), a scene is projected on an image distribution (9) in an evaluation space independent of a photographing light source (2), and an evaluation unit (10) is used to estimate a correct photographing light source (2) by rating a reasonability for a plurality of test light sources (1) based on the distribution condition of the sample value of the projected scene. |
申请公布号 |
WO2004045219(A1) |
申请公布日期 |
2004.05.27 |
申请号 |
WO2003JP14377 |
申请日期 |
2003.11.12 |
申请人 |
SONY CORPORATION;ISHIGAMI, KOICHIRO;KATO, NAOYA |
发明人 |
ISHIGAMI, KOICHIRO;KATO, NAOYA |
分类号 |
H04N9/04;H04N1/46;H04N1/60;H04N9/64;H04N9/73;H04N101/00 |
主分类号 |
H04N9/04 |
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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