IMAGE CONVERSION DEVICE AND IMAGE CONVERSION PROGRAM

摘要

It is possible to provide an image conversion device and an image conversion program capable of reducing an operation load when converting a luminance image into brightness image. Firstly, the luminance image is subjected to a wavelet decomposition to generate J (J is an integer not smaller than 2) sub band images (S2). Next, according to a predetermined relationship between luminance and brightness, a luminance value is converted in to a brightness value for each of the pixels in the sub band image (S4). Next, wavelets of K (K is an integer not smaller than 2, K = J) sub band images are combined to generate a brightness image (S5).