| 摘要 |
To provide an auto white balance apparatus capable of performing stable white balance adjustment. A parent block is divided into child blocks by a block-dividing circuit 110, and a typical value is calculated every child block by a typical-value calculating circuit 120, and then the distance between the typical color difference component of each parent block and the typical color difference component of each child block is obtained on a color difference plane. A child block satisfying a condition equal to or less than a threshold value S is selected to recalculate reliability of a parent blocks by using only selected child blocks. Moreover, a white balance evaluating circuit 130 corrects reliabilities of parent blocks in accordance with the number of unselected child blocks.
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