METHOD FOR IMAGE INTERPOLATION USING ASYMMETRIC INTERPOLATION FILTER AND APPARATUS THEREFOR

摘要

Disclosed is a method for sub-pixel interpolation for an image using a conversion-based interpolation filter, the method for image interpolation comprising: selecting, for each sub-pixel level interpolation point, a symmetric interpolation filter or an asymmetric interpolation filter from among interpolation filters with respect to an interpolation point, wherein the interpolation filters are for generating the pixel value of at least one sub-pixel that is positioned in between the pixels; and generating the pixel value of at least one sub-pixel by interpolating from the pixel values of pixels using the selected interpolation filter.