The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Apr. 13, 2010
Yasushi Fukushima, Osaka, JP;
Tadayuki Inoue, Hyogo, JP;
Yuji Kiniwa, Fukuoka, JP;
Katsuyuki Fukui, Osaka, JP;
Yasushi Fukushima, Osaka, JP;
Tadayuki Inoue, Hyogo, JP;
Yuji Kiniwa, Fukuoka, JP;
Katsuyuki Fukui, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
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 () calculates the average luminance level of each line in the imaging signal, the average luminance levels are temporarily stored by a storage unit (), and thereafter a frame difference calculation unit () 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.