1. An image processing apparatus characterized by comprising: a texture extraction unit that extracts a texture component from an input image; a subtle texture generation unit that generates, for each of blocks formed by dividing the input image, a basic block by reducing a block constituted of the texture component and repeatedly arranges the basic block in the block, thereby generating a subtle texture component in which a spatial frequency of the texture component has been increased; a blending unit, that performs image combination of the subtle texture component and the input image; and a texture-added-amount control unit that sets an image combining ratio in the blending unit.