PICTURE CONVERSION METHOD, PICTURE CONVERSION DEVICE, COMPUTER PROGRAM FOR PICTURE CONVERSION, AND PICTURE DISPLAY SYSTEM TECHNICAL FIELD

摘要

Provided is a picture conversion method capable of, when displaying a picture obtained from identical video data on a display device at different display luminances, converting the picture so that appearances of the picture visually come close to each other. The method includes a step of converting the picture by setting gradation characteristics when displaying the picture at a second luminance so that an inter-close gradation JND corresponding value difference at the second display luminance comes close to an inter-close gradation JND corresponding value difference at a first display luminance in a target gradation range which is at least part of an entire gradation range.