JP2007300320A5 - - Google Patents

Claims (10)

An imaging device for photographing a subject and processing an obtained image signal,
Block dividing means for dividing a captured image acquired in accordance with imaging conditions when imaging the subject into a plurality of blocks;
First white balance correction means for determining whether or not the block divided by the block dividing means is white, calculating a first white balance correction value, and performing white balance correction;
The block dividing unit determines whether the block divided into a size different from the block used by the first white balance correcting unit is white, calculates a second white balance correction value, and calculates white A second white balance correction means for performing balance correction ;
An image pickup apparatus comprising: a third white balance correction unit that performs white balance correction based on a white balance correction value calculated by the first white balance correction unit and the second white balance correction unit . The third white balance correction unit performs white balance correction by weighted addition of the white balance correction values calculated by the first white balance correction unit and the second white balance correction unit according to the shooting conditions. the imaging apparatus according to claim 1, wherein the TURMERIC line.   The shooting condition is sensitivity information, and the third white balance correction unit weights and adds the first white balance correction value and the second white balance correction value based on the sensitivity information. The imaging apparatus according to claim 2, wherein the imaging apparatus is characterized.   The third white balance correction means calculates a white balance correction coefficient by weighted addition of the first white balance correction value and the second white balance correction value, and the ratio of white in the entire photographed image The image pickup apparatus according to claim 2, wherein white balance correction is performed by weighted addition based on the image. An image processing method for processing an image signal obtained by photographing a subject,
A block dividing step of dividing a captured image acquired according to shooting conditions when shooting the subject into a plurality of blocks;
A first white balance correction step of determining whether the block divided in the block division step is white, calculating a first white balance correction value, and performing white balance correction;
In the block dividing step, it is determined whether or not the block divided into a size different from the block used in the first white balance correcting step is white, and a second white balance correction value is calculated to obtain a white A second white balance correction step for performing balance correction ;
An image processing method comprising: a third white balance correction step of performing white balance correction based on the white balance correction value calculated in the first white balance correction step and the second white balance correction step . In the third white balance correction step, the white balance correction value calculated in the first white balance correction step and the second white balance correction step is weighted and added according to the shooting conditions to perform white balance correction. the image processing method according to claim 5, wherein the TURMERIC line. The shooting condition is sensitivity information, and the third white balance correction step weights and adds the first white balance correction value and the second white balance correction value based on the sensitivity information. The image processing method according to claim 6. In the third white balance correction step, a white balance correction coefficient is calculated by weighted addition of the first white balance correction value and the second white balance correction value, and a white ratio in the entire photographed image is calculated. The image processing method according to claim 6, wherein white balance correction is performed by weighted addition based on the image . A program to be executed by a computer to process an image signal obtained by photographing an object,
A block dividing step of dividing a captured image acquired according to shooting conditions when shooting the subject into a plurality of blocks;
A first white balance correction step of determining whether the block divided in the block division step is white, calculating a first white balance correction value, and performing white balance correction;
In the block dividing step, it is determined whether or not the block divided into a size different from the block used in the first white balance correcting step is white, and a second white balance correction value is calculated to obtain a white A second white balance correction step for performing balance correction ;
A program causing a computer to execute a third white balance correction step of performing white balance correction based on a white balance correction value calculated in the first white balance correction step and the second white balance correction step. .   10. A computer-readable recording medium on which the program according to claim 9 is recorded.