Patent ID: 8098961
Filing Date: 2012-01-17
Classification: G06T

Abstract:
1. A resolution enhancement apparatus comprising: an acquisition unit configured to acquire, from an image source, a first low resolution image in which luminance values at positions of first pixels included in an image plane of the first low resolution image are expressed as first pixel values; an emphasis unit configured to perform edge emphasis processing on the first low resolution image to obtain a second low resolution image; a low detection unit configured to detect, using one of the first low resolution image and the second low resolution image, a plurality of corresponding points corresponding to a plurality of image regions each of which is closest to a pixel value pattern included in an interest image region in the first low-resolution image at a precision of a sub pixel unit as a unit smaller than an interval between neighboring pixels, the interest image region being set to have each of the first pixels as a pixel of interest; a setting unit configured to set each of a plurality of second pixel values for second pixels of the second low resolution image as a sampling value of a luminance value at each corresponding point when one of the second pixels is used as a pixel of interest to obtain a plurality of sampling values; an enlargement unit configured to enlarge the first low resolution image into a high resolution image comprising third pixels, a number of third pixels being greater than a number of pixels of the first low resolution image; and a conversion unit configured to execute pixel value conversion which adds or subtracts a plurality of third pixel values in the high resolution image using the third pixels in a direction to reduce errors between the luminance values sampled at the corresponding points and the sampling values.