METHOD FOR ENCODING AND DECODING MOVING IMAGE

摘要

PROBLEM TO BE SOLVED: To design a memory area of an encoder and a decoder corresponding to an encoding system to which no capacity restriction to the memory area is provided.

SOLUTION: This method for encoding and decoding moving image is provided with a level analysis part 100a which determines the maximum number of pixels in screen (Nfpx) of which the encoding processing is possible and the maximum number of storage pixels (Nspx) which can be stored in a picture memory of the decoder based on a level identifier Lst indicating an encoding level specified by a user, judges propriety of encoding to an input image on the basis of the maximum number of pixels in screen (Nfpx) and input image size (the number of vertical pixels (h) and the number of horizontal pixels (w)) and calculates the number of reference candidate pictures (the maximum number of reference pictures) Nrpn which can be referred in the case of prediction encoding between pictures.

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