VIDEO PREDICTION ENCODING DEVICE, VIDEO PREDICTION ENCODING METHOD, VIDEO PREDICTION ENCODING PROGRAM, VIDEO PREDICTION DECODING DEVICE, VIDEO PREDICTION DECODING METHOD, AND VIDEO PREDICTION DECODING PROGRAM.

摘要

The purpose of the present invention is to efficiently use an image buffer memory and to make it possible to further improve encoding efficiency by means of determining a number of playback images capable of being stored in the image buffer memory, on the basis of the frame size of a playback image. The video prediction encoding device is equipped with an image storing means that, after reconstituting compressed image data into a playback image, stores one or more of the playback images as reference images for encoding subsequent images. The video prediction encoding device is also equipped with a memory control means that controls a frame memory in the image storing means. The memory control means determines the maximum number of playback images capable of being stored in the frame memory to be multiplied by 2L (L is an integer greater than or equal to 1) when the frame size for input images, in relation to the maximum frame size for images, is less than or equal to 1/2L.