IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, IMAGE PROCESSING PROGRAM, AND IMAGE DISPLAY DEVICE

摘要

A contour direction estimation unit that estimates, for each pixel, the contour direction having a constant signal value for each pixel; a low-pass filter unit that smooths signal values for each pixel, on the basis of the signal values for each reference pixel being pixels in a reference area corresponding to the pixels and being arranged in the contour direction for the pixels estimated by the contour direction estimation unit; and a high-frequency expansion unit that generates a high-frequency component for the pixel signal values and expands the frequency band for the pixel signal values.