METHOD AND APPRATUS FOR ENCODING IMAGES USING MOTION PREDICTION BY MULTIPLE REFERENCE, AND METHOD AND APPARATUS FOR DECODING IMAGES USING MOTION PREDICTION BY MULTIPLE REFERENCE

摘要

The present invention relates to a method and apparatus for encoding images using motion prediction, and a method and apparatus for decoding images using motion prediction. According to an embodiment of the present invention, a method for encoding images includes determining, from a reference frame, at least one candidate estimator set including at least one candidate estimator in a candidate estimator range with a current estimator as the center on the reference frame, determining a reference estimator based on an error rate of assumed estimators determined by using the at least one candidate estimator included in each candidate estimator set, performing motion prediction for the current frame using a reference block and a current block corresponding to the determined reference estimator, and encoding image data including the current frame based on a result of motion prediction. Therefore, the inter prediction performance may be improved.