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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > 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 : 3 / 6 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) È­¼Ò ¿µ¿ª Wyner-ZivÄÚµ¦¿¡¼­ ÀûÀÀÀû ¿¹ÃøÀ» ÅëÇÑ º¸Á¶Á¤º¸ »ý¼º ¹æ½Ä°ú ¼º´É ºñ±³
¿µ¹®Á¦¸ñ(English Title) A Side Information Generation Using Adaptive Estimation and Its Performance Comparison in PDWZ CODEC
ÀúÀÚ(Author) ±èÁø¼ö   ±èÀç°ï   ¼­±¤´ö   Jin-soo Kim   Jae-Gon Kim   Kwang-deok Seo  
¿ø¹®¼ö·Ïó(Citation) VOL 14 NO. 02 PP. 0383 ~ 0393 (2010. 02)
Çѱ۳»¿ë
(Korean Abstract)
ºÐ»ê ºñµð¿À ºÎȣȭ ±â¹ý(DVC, Distributed Video Coding)Àº º¹ÀâÇÑ Åë°è Ư¼ºÀ» º¹È£±âÃø¿¡¼­ ó¸®ÇÏ°í, °£´ÜÇÑ ¿¬»ê¸¸ ¼öÇàÇÏ´Â ºÎÈ£±â¸¦ ±¸ÇöÇÒ ¼ö ÀÖ´Ù. ÀÌ·¯ÇÑ ÀÀ¿ë ºÐ¾ß¿¡¼­´Â, º¹È£±â¿¡¼­ Wyner-Ziv ÇÁ·¹ÀÓ¿¡ ´ëÇÑ ¿¹ÃøÄ¡ Áï, º¸Á¶Á¤º¸(SI, Side Information)ÀÇ ¿ì¼öÇÑ ¿¹ÃøÄ¡¸¦ ±¸ÇÏ´Â °ÍÀº Wyner-Ziv ºÎȣȭ¿¡¼­ Àüü ¼º´ÉÀ» °áÁ¤Çϴµ¥ ¸Å¿ì Áß¿äÇÑ ¿ªÇÒÀ» ÇÑ´Ù. ±âÁ¸ÀÇ ¿òÁ÷ÀÓ º¸»ó ÇÁ·¹ÀÓ º¸°£¿¡ ±âÃʸ¦ µÐ ¹æ½ÄµéÀº Å° ÇÁ·¹ÀÓÀÇ ºí·Ï ±â¹Ý ¶Ç´Â ¹°Ã¼ ±â¹ÝÀ¸·Î ¿òÁ÷ÀÓÀ» °¢°¢ ¿¹ÃøÇÏÁö¸¸, Wyner-Ziv ÇÁ·¹ÀÓ¿¡ ´ëÇÑ Ãʱâ Á¤º¸¸¦ °í·ÁÇÏÁö ¾Ê´Â´Ù. º» ³í¹®¿¡¼­´Â Æò±Õ ¿µ»ó¿¡ ±âÃÊÇÑ ºí·Ï ÀûÀÀÀûÀÎ ¿òÁ÷ÀÓ ¿¹ÃøÀ» ÅëÇÑ º¸Á¶Á¤º¸ »ý¼º ¹æ½ÄÀ» Á¦¾ÈÇÑ´Ù. ¸ðÀǽÇÇèÀ» ÅëÇÏ¿© Á¦¾È ±â¹ýÀº ÃÖ´ë 0.4dB Á¤µµÀÇ °³¼±À» º¸À̸ç, Wyner-Ziv ÄÚµ¦¿¡ ´ëÇÑ ¸ðÀǽÇÇè¿¡¼­µµ ¿ì¼öÇÑ ÁÖ°üÀû ¹× °´°üÀû È­ÁúÀ» Á¦°øÇÔÀ» º¸ÀδÙ.
¿µ¹®³»¿ë
(English Abstract)
DVC (Distributed Video Coding) allows us to explore the video statistics at the decoder side, resulting in a less complex encoder and more complex decoder. In this approach, it is important to generate a good prediction to the current Wyner-Ziv frame, called side information, which plays a crucial role in the overall performance of a DVC system. Conventional MCFI (motion compensated frame interpolation) techniques, which explore temporal correlations between neighbor frames of the current frame, preform the block-based or object-based motion estimation, but, they do not include the basis frame for the Wyner-Ziv frame. This paper proposes an efficient way to get better side information, by finding the average frame between neighbor frames and by comparing adaptively the candidate blocks. Through computer simulations, it is shown that the proposed method can improve the performance up to 0.4dB and provide better subjective and objective visual qualities in Wyner-Ziv CODEC.
Å°¿öµå(Keyword) ºÐ»êºñµð¿ÀºÎȣȭ   À§³Ê-Áöºê   º¸Á¶Á¤º¸   DVC   Wyner-Ziv   Side Information  
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