Apparatus and method for processing an image to correct image distortion caused by a hand shake

摘要

Provided is an apparatus and method for processing an image which can correct image distortion caused by hand shake. The apparatus includes: a reference image acquiring unit for acquiring a first and a second reference images by using different shutter times and international standard organization (ISO) values; and a color information correcting unit for correcting color information of an input image, which is obtained by using a shutter time that is shorter of the shutter times used to acquire the first and the second reference images, based on a brightness ratio and a chrominance ratio of the first and second reference images. Accordingly, image distortion caused by hand shake can be corrected.

主权项

1. An apparatus for processing an image to correct image distortion caused by a hand shake, the apparatus comprising:
a reference image acquiring unit for acquiring a first and a second reference images by using different shutter times associated with the hand shake, an amount of light, brightness and color reproduction, and international standard organization (ISO) values associated with noise in an image; a color information correcting unit for correcting color information of an input image, which is obtained by using a shutter time used to acquire the first reference image, based on a brightness ratio and a chrominance ratio of the first and the second reference images; and a noise removing unit for removing noise in the input image based on edge information of the input image, wherein the reference image acquiring unit acquires the first reference image by using a first shutter time and a first ISO value, and acquires the second reference image by using a second shutter time, which is longer than the first shutter time, and a second ISO value, which is less than the first ISO value, wherein the noise removing unit comprises: a brightness change direction information extracting unit for extracting brightness change direction information of a color information corrected image; an edge information extracting unit for extracting edge information of the color information corrected image based on the brightness change direction information; and a noise reduction calculating unit for reducing noise in the color information corrected image based on the edge information, and wherein the first reference image and the second reference image are successive frames.