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Method and apparatus for a memory efficient approach for decoding progressive joint photographic experts group (JPEG) images
Method and apparatus for a memory efficient approach for decoding progressive joint photographic experts group (JPEG) images
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机译:用于高效存储方法的技术和方法,用于解码渐进联合摄影专家组(JPEG)图像
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摘要
A computer implemented method and apparatus for a memory efficient approach for decoding progressive JPEG images. The method comprises (a) accessing a progressive JPEG image, wherein the progressive JPEG image comprises a plurality of compressed scans and wherein each scan in the plurality of scans comprises a plurality of compressed rows of image data; (b) decompressing not more than half of the compressed rows of each scan in the plurality of scans into a memory buffer; (c) copying a remaining plurality of compressed rows of each scan in the plurality of scans into a plurality of small memory buffers; (d) decoding, in place, the decompressed rows in the memory buffer; and (e) repeating steps (b)-(d) until a predefined number of rows are remaining in the plurality of small memory buffers, at which time the remaining rows are decompressed and decoded.
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