VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING PROGRAM, VIDEO DECODING PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a video encoding method and a video decoding method capable of improving encoding efficiency or decoded video quality.SOLUTION: A video encoding method for further performing residual prediction to an image generated by inter-screen prediction from a reference picture in the case of generating a prediction image by performing prediction to a prediction target region includes: a residual prediction step of generating a prediction predictive residual by inter-screen prediction from the reference picture; and a prediction predictive residual update step of generating a new prediction predictive residual by updating the prediction predictive residual. A video decoding method for further performing residual prediction to the image generated by inter-screen prediction from the reference picture in the case of generating the prediction image by performing prediction to the prediction target region includes: a residual prediction step of generating the prediction predictive residual by inter-screen prediction from the reference picture; and a prediction predictive residual update step of generating a new prediction predictive residual by updating the prediction predictive residual.