Even if the parallax between the left and right images is not appropriate, the effect on health due to stereoscopic viewing is prevented in advance. The camera and the television are connected (step S1), and the television size is input from the camera (step S2). The parallax adjustment amount v is generated based on the input television size (step S3), and the left and right image data and the parallax adjustment amount v are transmitted to the television (step S4). The television receiving this (step S101) adjusts the parallax between the left and right images by the parallax adjustment amount v (step S102), cuts out an area including the subject with the largest parallax among the subjects in the left and right images, and displays the camera. A small screen is displayed with the size of the copy (step S103). The user confirms the image displayed on the small screen (step S5), and if there is no problem, 3D display is performed on the entire TV size (step S104).
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