Patent ID: 8682110

Claim:
A method of converting a resolution of a block-based image, the method comprising: dividing a low resolution image frame into a plurality of blocks having predetermined sizes; performing motion prediction on a sub-pixel unit of each one of the divided blocks and determining a motion vector of the sub-pixel unit; dividing the motion vector of the sub-pixel unit into a first motion vector having an integer pixel unit and a second motion vector having the sub-pixel unit; determining at least one low resolution reference block corresponding to each one of the divided blocks by using the first motion vector having the integer pixel unit; converting each one of the divided blocks into a high resolution block by using the second motion vector having the sub-pixel unit and the at least one low resolution reference block; and generating a high resolution image frame by using each one of the converted high resolution blocks, wherein at least one of the dividing the low resolution image, the performing the motion prediction, the dividing the motion vector, the determining the at least one low resolution reference block, the converting, and the generating the high resolution image frame is performed by a processor.