PIXEL-BASED METHOD AND APPARATUS FOR OBTAINING IMAGE WITH RESOLUTION LOWERED

摘要

A pixel-based method and apparatus for obtaining an image with the resolution lowered. The method comprises: constructing, by using an image super-resolution technology, a virtual image according to the resolution of an image with the resolution lowered; determining a relational expression between pixels of the virtual image and pixels of the image with the resolution lowered; calculating a mean square error between the pixels of the virtual image and pixels of an original image according to the relational expression between the pixels of the virtual image and the pixels of the image with the resolution lowered; when the mean square error between the pixels of the virtual image and the pixels of the original image is minimum, determining a coefficient matrix between the pixels of the image with the resolution lowered and the pixels of the original image; determining the pixels of the image with the resolution lowered according to the pixels of the original image and the coefficient matrix between the pixels of the image with the resolution lowered and the pixels of the original image; and outputting the image with the resolution lowered. In this manner, a clear image can be obtained, and color aliasing can be avoided.