Patent ID: 7453500
Filing Date: 2008-11-18
Classification: H04N

Abstract:
1. An image sensing apparatus, comprising: an electronic flash device which emits light for an object; a first obtaining device which obtains non-flashed gain control values for the object before light emission by said electronic flash device, wherein the non-flashed gain control values include a first color component gain and a second color component gain; a second obtaining device which obtains flashed gain control values for light emission by said electronic flash device, wherein the flashed gain control values include the first color components gain and the second color components gain; a ratio computing device which computes a ratio k (0<k<1) which represents the degree of influence of the color temperature of light to be emitted from the electronic flash device; a first gain computing device which computes a first gain control value for the first color component in accordance with the first color component gain of the non-flashed gain control values, the first color component gain of the flashed gain control values, and the ratio k; a second gain computing device which computes a second gain control value for the second color component in accordance with a black body radiation characteristic function f(x) in which the first gain control value for the first color component computed by said first gain computing device is used for x; and a control device which controls a white balance for an image of the object in accordance with the first gain control value for the first color component and the second gain control value for the second color component.