Patent ID: 7554577
Filing Date: 2009-06-30
Classification: H04N

Abstract:
1. A signal processing device comprising: an imaging element in which an imaging region is divided into two left and right regions, and an electric signal is read for each divided region; synthesis means for synthesizing the electric signal read from the imaging element to generate signals for one screen; gain deriving means for deriving a gain for one divided region defined in advance for each horizontal line in one screen based on the signals of a plurality of pixels near the boundary of the divided regions out of the signals for one screen generated by the synthesis means; average value deriving means for deriving an average value of the gain derived for each horizontal line in one screen by the gain deriving means; and correcting means for correcting a signal level difference between the both divided regions by multiplying the gain average value derived by the average value deriving means to the signal in one divided region defined in advance out of the signals for one screen output from the synthesis means; wherein the gain deriving means derives the gain by deriving, from the signals of two same filter pixels of one divided region, a predicted value of the signal of one same filter pixel of the other divided region based on the signals of a plurality of same color filter pixels near the boundary of the divided region for each horizontal line in one screen, and comparing the derived predicted value and an actual signal value of the relevant pixel.