IMAGE ENCODING/DECODING APPARATUS AND METHOD

摘要

The present invention relates to an image encoding/decoding apparatus and method. The present invention provides an image encoding apparatus which encodes images by block units, wherein said image encoding apparatus estimates and compensates for the motion of the block to be encoded from input images, as well as the pixel-wide or transform coefficient-wide motion of the block, to thereby perform an inter-prediction encoding on the block and output a bit stream. The apparatus and the method of the present invention improve the accuracy of motion prediction for the block to be encoded, and improve the entropy encoding performance for residual blocks (transform coefficients), thus improving compression performance.