IMAGE DECOMPRESSION APPARATUS, IMAGE DECOMPRESSION PROGRAM, AND IMAGE DECOMPRESSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an image decompression apparatus, an image decompression program, and an image decompression method capable of sequentially decompressing the compressed data of a plurality of images.

SOLUTION: An image decompression apparatus includes: a request frame number acquisition section that sequentially acquires request frame numbers which are frame numbers requested in the forward or backward direction of the frame number; a compressed data acquisition section that acquires compressed data of a first compression unit to which the request frame number belongs and compressed data of a second compression unit adjacent to the first compression unit in the backward direction of the frame number from the first compression unit; a decompression section that decompresses the compressed data of the first and second compression units acquired by the compressed data acquisition section to obtain decompressed images; and an image holding section that holds the decompressed images of the first and second compression units generated by the decompression section and extracts decompressed images corresponding to the request frame numbers so as to output the decompressed images.

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