发明名称 |
Imaging device, external flash detection method, program, and integrated circuit |
摘要 |
When capturing images of a subject with an imaging device that uses a CMOS image sensor, a white band-shaped artifact appears in the imaging signal due to the influence of a rolling shutter operation performed when an external flash has been emitted. Manipulating or removing images in which such an artifact appears requires specifying the frames in which the artifact appears. A line averaging unit (11) calculates the average luminance level of each line in the imaging signal, the average luminance levels are temporarily stored by a storage unit (12), and thereafter a frame difference calculation unit (13) calculates the difference between the line average luminance levels and the line average luminance levels of the next frame. These frame difference values are compared with a reference value, and it is determined that the influence of an external flash is present if a portion of interest with high values is continuous for one frame period. |
申请公布号 |
US8681265(B2) |
申请公布日期 |
2014.03.25 |
申请号 |
US201013262868 |
申请日期 |
2010.04.13 |
申请人 |
FUKUSHIMA YASUSHI;INOUE TADAYUKI;KINIWA YUJI;FUKUI KATSUYUKI;PANASONIC CORPORATION |
发明人 |
FUKUSHIMA YASUSHI;INOUE TADAYUKI;KINIWA YUJI;FUKUI KATSUYUKI |
分类号 |
H04N5/222 |
主分类号 |
H04N5/222 |
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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