Photography apparatus and photography method

Details Photography apparatus and photography method Photography apparatus and photography method

2011-01-18

2011-01-18

Mahoney, Christopher E (Department: 2862)

Photography

Plural image recording

C396S180000, C348S371000

Reexamination Certificate

active

07873271

ABSTRACT:
Two photography operations are performed without emitting flash during a second photography operation, to obtain image signals P1and P2. A flash influence signal value F1is calculated in image signal P1. A flash influence signal value F2, which is the amount of influence due to flash in the case that flash was emitted during the second photography operation, is calculated based on the differences between the imaging conditions of the first photography operation and the second photography operation and the flash influence signal value F1. An image signal P2″, which is an image signal which is estimated to be obtained in the case that flash was emitted during the second photography operation, is obtained by adding flash influence signal value F2to image signal P2obtained by the second photography operation. A dynamic range expanded image signal Pc is calculated based on image signal P1and image signal P2″.

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patent: 2006-148591 (2006-06-01), None
patent: 2008-16862 (2008-01-01), None
Richart, Christian “Flash-Exposure High Dynamic Range Imaging: Virtual Photography and Depth-Compensating Flash”.

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