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Ç¥ÁعøÈ£ TTAE.IT-T851 ±¸Ç¥ÁعøÈ£
Á¦°³Á¤ÀÏ 2008-12-19 ÃÑÆäÀÌÁö 27
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¿µ¹®Ç¥Áظí ITU-T T.81 (JPEG-1)-based still-image coding using an alternative arithmetic coder
Çѱ۳»¿ë¿ä¾à ÀÌ Ç¥ÁØÀº Q-15 ºÎȣȭ±â¶ó°í ºÒ¸®´Â ´ëü »ê¼ú ºÎȣȭ±â ¹× JPEG-1°ú ºñ±³Çؼ­ ´Ù¸¥ º£À̽º¶óÀÎÀÇ »ç¿ëÀ» Áö¿øÇÏ´Â Á¤Áö ¿µ»óÀÇ µðÁöÅÐ ¾ÐÃà ¹× ÄÚµù¿¡ ´ëÇÑ Çü½ÄÀ» Á¤ÀÇÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à "This Recommendation defines a format for digital compression and coding of still images supporting the use of an alternative arithmetic coder called the ""Q15-coder"" and an alternative baseline compared to ITU-T Rec. T.81 | ISO/IEC 10918-1 (JPEG-1). Support of the Huffman entropy coding method specified in ITU-T Rec. T.81 (JPEG-1) is not required in this Recommendation.
The Q15-coder resolves the carry in the decoder instead of in the encoder, and so has a low latency compared to the QM-coder arithmetic coder incorporated in T.81, which has a potential latency of the rest of the entire entropy-coded segment.
This Recommendation also specifies a DCT with input precision of 16 bits, which is greater than the precision of the T.81 (JPEG-1) DCT."
±¹Á¦Ç¥ÁØ ITU-T T.851
°ü·ÃÆÄÀÏ TTAE.IT-T851.zip TTAE.IT-T851.zip            

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