A detection method includes image acquisition processing for acquiring an image; white balance adjustment processing for adjusting a white balance of the image which is acquired in the image acquisition processing; control processing for controlling adjustment content of the white balance in the white balance adjustment processing, on the basis of a specific color serving as a reference; and detection processing for detecting a portion satisfying a predetermined condition relevant to the specific color from the acquired image in which the white balance has not adjusted, on the basis of the image in which the white balance has been adjusted by the adjustment content of the white balance controlled in the control processing.
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