An image display apparatus includes: an image signal processing unit which adjusts an input grayscale values included in an input image signal according to a predetermined grayscale characteristic; a display unit which displays an image based on an image signal included in an output grayscale value adjusted by the image signal processing unit; and a grayscale characteristic changing unit which changes a correlation between the input and output grayscale values defined based on the grayscale characteristic.

 
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< Image processing device, image display device, image processing method, and image processing program

> Image reading apparatus and method

> Image reading device, method of controlling the same, control program, storage medium and image forming apparatus provided with the image reading device

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