Patent ID: 8249379

Claim:
An image processing apparatus to which an enlarged image obtained by enlarging an original image is input as an input image, said image processing apparatus comprising: a first intermediate image generating unit configured to generate a first intermediate image by extracting a component in a particular frequency band by removing a low frequency component and a high frequency component from the input image; a second intermediate image generating unit configured to generate a second intermediate image from the first intermediate image; an intermediate image processing unit configured to output an image obtained by amplifying each pixel value in the second intermediate image by a first amplification factor based on a pixel value of the input image; and an adding unit configured to add, to the input image, the image output by the intermediate image processing unit; wherein the first intermediate image generating unit comprises: a first high-frequency component image generating unit configured to generate a first high-frequency component image by extracting a high-frequency component of the input image; and a low-frequency component image generating unit configured to generate the first intermediate image by extracting only a low-frequency component of the first high-frequency component image; and the second intermediate image generating unit comprises: a non-linear processing unit configured to generate a non-linearly processed image by amplifying each pixel value in the first intermediate image by a second amplification factor determined for each pixel.