Image processing device for adjusting computational complexity of interpolation filter, image interpolation method, and image encoding method

摘要

Provided are an image processing device capable of adjusting computational complexity, an image interpolation method, and an image encoding method. The image interpolation method includes selecting a horizontal interpolation filter having a first complexity, selecting a vertical interpolation filter having a second complexity, calculating pixel values of sub-pixels by performing an interpolation operation by using the selected horizontal and vertical interpolation filters, and generating interpolation information related to the selected horizontal interpolation filter and the selected vertical interpolation filter, wherein the first and second complexities are different from each other.