Image quality adjustment device, image quality adjustment method and program

Abstract

The image quality adjustment device includes a memory unit and an image quality conversion unit, which uses tone curves to convert the image quality of the captured image. The tone curves (TC-11 to TC-14) are as follows: when the maximum value of brightness is set to 1 and the minimum value is set to 0 and normalized, the normalized brightness value of the converted image corresponding to the minimum value is greater than the value of the minimum value corresponding to the straight line with a slope of 1 and an intercept of 0 when both the input and output axes are linear scales, by a first offset (OS1) greater than that value.