IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD

摘要

The disclosed image encoding device is provided with an encoding mode determination unit (4) that evaluates the encoding efficiency of a difference image A and the encoding efficiency of a difference image B and selects the difference image with the higher encoding efficiency. Difference image A is the difference between a macroblock image to be encoded and a predicted image A generated by a motion compensation prediction unit (2) using a motion prediction mode A, and difference image B is the difference between the macroblock image to be encoded and a predicted image B generated by a motion compensation prediction unit (2) using a motion prediction mode B.