Patent ID: 8970728
Filing Date: 2015-03-03
Classification: H04N

Abstract:
1. An image pickup apparatus comprising: an image pickup element having an image pickup pixel having a plurality of photoelectric conversion units; an obtaining unit configured to obtain a pixel signal of a first image and a pixel signal of a second image having a parallax to the first image, from an output of the image pickup element; a focus adjustment unit configured to perform a focus adjustment of a phase-difference detection method by using a pair of the first image and the second image; a position adjustment unit configured to perform a position adjustment such that a parallax between an image area for specifying a light source color of the first image and an image area for specifying a light source color of the second image is eliminated; a comparison unit configured to compare the pixel signal of the first image and the pixel signal of the second image, subjected to the position adjustment by the position adjustment unit; and a light source color specifying unit configured to specify the light source color on the basis of a result of the comparison performed by the comparison unit, wherein the comparison unit is a subtraction unit configured to obtain a difference value between the pixel signal of the first image and the pixel signal of the second image, and the light source color specifying unit is arranged to specify the light source color on the basis of the difference value in the image areas between which there is no parallax due to the position adjustment by the position adjustment unit, wherein the obtaining unit obtains information of in-focus ranges of the first image and the second image, and the light source color specifying unit is arranged to specify the light source color on the basis of the information of the in-focus ranges, and wherein the comparison unit compares the pixel signals of the first and second image of a same spectrum characteristic.