发明名称 |
MULTI-LED CAMERA FLASH FOR COLOR TEMPERATURE MATCHING |
摘要 |
Certain aspects relate to systems and techniques for color temperature analysis and matching. For example, three or more camera flash LEDs of different output colors can be used to match any of a range of ambient color temperatures in a non-linear space on the black body curve. The scene color temperature can be analyzed in a preliminary image by determining actual sensor R/G and B/G ratios, enabling more accurate matching of foreground flash lighting to background lighting by the reference illuminant for subsequent white balance processing. The current provided to, and therefore brightness emitted from, each LED can be individually controlled based on the determined sensor response to provide a dynamic and adaptive mix of the output colors of the LEDs. |
申请公布号 |
WO2016043912(A1) |
申请公布日期 |
2016.03.24 |
申请号 |
WO2015US45933 |
申请日期 |
2015.08.19 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
VELARDE, RUBEN MANUEL;SALAZAR, NATHANIEL JAY TOBIAS;HUNG, SZEPO ROBERT;DHAR, SANDEEP;DING, HENGZHOU |
分类号 |
G03B15/05;F21K99/00;H04N5/235 |
主分类号 |
G03B15/05 |
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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