AUTO WHITE BALANCE ADJUSTMENT SYSTEM

PROBLEM TO BE SOLVED: To provide an auto white balance adjustment system capable of performing a high-accuracy white balance adjustment.SOLUTION: An auto white balance adjustment system 1 includes a white-balance fine adjustment starting instruction unit 24 and a threshold-value switching unit 30. The white-balance fine adjustment starting instruction unit 24 makes an instruction to start fine adjustment in white balance. The threshold-value switching unit 30 switches between a first threshold value and a second threshold value according to the instruction by the white-balance fine adjustment starting instruction unit 24 and outputs either threshold values to the white-balance fine adjustment starting instruction unit 24. The second threshold value is larger than the first threshold value. The white-balance fine adjustment starting instruction unit 24 determines whether to start the fine adjustment according to a comparison result between the first threshold value and integration data 20. The white-balance fine adjustment starting instruction unit 24 determines whether to continue the fine adjustment according to a comparison result between the second threshold value and the integration data 20.