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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:用于对渐进式联合照相专家组(JPEG)图像进行解码的内存有效方法的方法和装置
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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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