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Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
6
/ 6
ÀÌÀü°Ç
ÇѱÛÁ¦¸ñ(Korean Title)
LDPCA ÇÁ·¹ÀÓº° ÀûÀÀÀû Æи®Æ¼ ¿ä±¸·® ¿¹ÃøÀ» ÀÌ¿ëÇÑ °í¼Ó À§³Ê-Áöºê º¹È£È ±â¹ý
¿µ¹®Á¦¸ñ(English Title)
A Fast Wyner-Ziv Video Decoding Method Using Adaptive LDPCA Frame-based Parity Bit Request Estimation
ÀúÀÚ(Author)
±è¸¸Àç
±èÁø¼ö
±èÀç°ï
¼±¤´ö
Man-jae Kim
Jin-soo Kim
Jae-Gon Kim
Kwang-deok Seo
¿ø¹®¼ö·Ïó(Citation)
VOL 16 NO. 02 PP. 0259 ~ 0265 (2012. 02)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù¿¡ ÃÊ°æ·® ºñµð¿À ¾ÐÃà ±â¼ú·Î½á ºÐ»ê ºñµð¿À ºÎÈ£È ±â¹ý (DVC)ÀÌ ¸¹Àº ÁÖ¸ñÀ» ¹Þ°í ÀÖ´Ù. ´ëºÎºÐÀÇ DVC½Ã½ºÅÛµéÀº ¿ì¼öÇÑ ºñÆ®À²-¿Ö°î ¼º´ÉÀ» ¾ò±â À§ÇØ Çǵå¹é ä³ÎÀ» ÅëÇØ Æи®Æ¼ ºñÆ® Á¦¾î¸¦ ¼öÇàÇÏ°í ÀÖÀ¸³ª, ³ôÀº º¹È£È ½Ã°£ Áö¿¬À» ÃÊ·¡ÇÏ¿© ½Ç½Ã°£ ±¸Çö¿¡ °¡Àå Å« ¹®Á¦Á¡ÀÌ µÇ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ¹®Á¦Á¡À» ÇØ°áÇϱâ À§ÇØ º» ³í¹®¿¡¼´Â LDPCA ÇÁ·¹ÀÓº° ÀûÀÀÀû Æи®Æ¼ ¿ä±¸ ºñÆ®·®¿¡ ´ëÇÑ ÀûÀÀÀû ¿¹ÃøÀ» ÅëÇÑ È¿°úÀûÀÎ ºÐ»ê ºñµð¿À ºÎÈ£È ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈµÈ ¹æ¹ýÀº ȼҿµ¿ª À§³Ê-Áöºê ºÎȣȱâ¹ý¿¡¼ °¢ ºñÆ® Ç÷¹ÀÎ ³»ÀÇ LDPCA ÇÁ·¹ÀÓ°£¿¡ Á¸ÀçÇÏ´Â Åë°èÀû Ư¼ºÀ» ÀÌ¿ëÇÏ¿© ºñÆ® ¿ä±¸·®À» ÀûÀÀÀûÀ¸·Î ¿¹ÃøÇÏ´Â ¹æ½ÄÀ» ÀÌ¿ëÇÑ´Ù. ¸ðÀǽÇÇèÀ» ÅëÇÏ¿©, Á¦¾È ¹æ½ÄÀº LDPCA º¹È£È±â¿¡ »ç¿ëÇÑ °æ¿ì Æи®Æ¼ ºñÆ® ¿ä±¸·® ¿¹ÃøÀ» »ç¿ëÇÏÁö ¾Ê´Â ¹æ½Äº¸´Ù Æò±ÕÀûÀ¸·Î 80% ÀÌ»óÀÇ º¹È£È Áö¿¬ ½Ã°£À» Àý°¨ÇÔÀ» º¸ÀδÙ.
¿µ¹®³»¿ë
(English Abstract)
Recently, many research works are focusing on DVC (Distributed Video Coding) system for low complexity encoder. Most DVC systems need feedback channel for parity bit control to achieve the good RD performances, however, this causes the system to have high decoding latency and is considered as one of the most critical problems for real implementation. In order to overcome this problem, this paper proposes an effective distributed video decoding method using adaptive LDPCA frame-based parity bit request estimation. The proposed method applies for the pixel-domain Wyner-Ziv system and exploits the statistical characteristics between adjacent LDPCA frames to estimate adaptively the parity bit request. Through computer simulations, it is shown that the proposed method achieves about 80% of latency reduction compared to the conventional no-estimation DVC system.
Å°¿öµå(Keyword)
ºÐ»ê ºñµð¿À ºÎÈ£È
°í¼Ó º¹È£È
Æи®Æ¼ ºñÆ® ¿ä±¸·® ¿¹Ãø
DVC
fast decoding
parity bit request estimation
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