VIDEO PREDICTIVE ENCODING DEVICE, VIDEO PREDICTIVE ENCODING METHOD, VIDEO PREDICTIVE ENCODING PROGRAM, VIDEO PREDICTIVE DECODING DEVICE, VIDEO PREDICTIVE DECODING METHOD, AND VIDEO PREDICTIVE DECODING PROGRAM

摘要

A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2̂L) (where L is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2̂L) times the maximum number of reconstructed pictures are storable in the frame memory.

主权项

1. A video predictive encoding device comprising:
an input unit that inputs a plurality of pictures forming a video sequence; an encoding unit that encodes the pictures by either intra-frame prediction or inter-frame prediction to generate compressed picture data including information on a target picture frame size, a maximum number of storable reconstructed pictures, and a maximum frame size specified as an encoding constraint and encodes the compressed picture data along with encoding specification data regarding the information on the target picture frame size, the maximum number of storable reconstructed pictures, and the maximum frame size; a decoding unit that decodes the compressed picture data to reconstruct the pictures; a picture storage that stores one or more of the reconstructed pictures as reference pictures to be used for encoding a subsequent picture; and a memory controller that controls a picture buffer memory in the picture storage, wherein when a frame size of the input pictures is not more than 1/(2̂L) (where L is an integer of one or more) of the maximum frame size of the pictures, the memory controller determines that (2̂L) times the maximum number of reconstructed pictures are storable in the frame memory.