Patent ID: 8045015
Filing Date: 2011-10-25
Classification: H04N

Abstract:
1. An image pickup apparatus having a plurality of white balance modes, comprising: an image pickup unit adapted to capture images of a subject to obtain a video signal; an integration unit adapted to perform integration processing of the video signal obtained by said image pickup unit, based on a set integration parameter, to acquire a white balance integration value for each of the white balance modes; a calculation unit adapted to perform calculation processing using the white balance integration value acquired by said integration unit to calculate a white balance control value for correcting a color temperature of a light source; a storage unit adapted to store, for each of the white balance modes, the set integration parameter, the white balance integration value, corresponding to the set integration parameter, acquired by said integration unit, and the white balance control value calculated by said calculation unit, wherein said storage unit stores at least a first white balance integration value in association with a first integration parameter corresponding to a first light source; a comparison unit adapted to compare a second integration parameter to be set corresponding to a second light source different from the first light source with the first integration parameter stored in said storage unit; and a readout unit adapted to, in a case where a result of the comparison indicates that the second integration parameter to be set is identical with or close to the first integration parameter stored in said storage unit, read out the first white balance integration value corresponding to the first integration parameter from said storage unit, wherein said calculation unit is adapted to, in a case where the result of the comparison indicates that the second integration parameter to be set is identical with or close to the first integration parameter stored in said storage unit, calculate a second white balance control value using the read out first white balance integration value, without performing the calculation processing for obtaining a second white balance integration value using the second integration parameter.