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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 : 11 / 13 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ÄÆ Àüȯ¿¡ ÀûÀÀÀûÀΠȥÇÕÇü ÃÊ°íÇØ»óµµ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Hybrid Super-Resolution Algorithm Robust to Cut-Change
ÀúÀÚ(Author) ±Ç¼øÂù   ÀÓÁ¾¸í   À¯Áö»ó   Soon-chan Kwon   Jong-Myeong Lim   Jisang Yoo  
¿ø¹®¼ö·Ïó(Citation) VOL 17 NO. 07 PP. 1672 ~ 1686 (2013. 07)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â ÀÌ»ê ¿þÀÌºí¸´ º¯È¯(discrete wavelet transform: DWT)À» ÀÌ¿ëÇÑ ´ÜÀÏ¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ý(super-resolution)°ú, º¹¼ö¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ýÀ» Á¦½ÃÇÏ°í µÎ ±â¹ýÀ» È¥ÇÕÇÑ »õ·Î¿î ÃÊ°íÇØ»óµµ ±â¹ý ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ±âÁ¸ÀÇ ´ÜÀÏ ¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ýÀÇ °æ¿ì ó¸® ½Ã°£ÀÌ ºü¸£´Ù´Â ÀåÁ¡ÀÌ ÀÖÀ¸³ª ¿µ»ó º¸°£ ½Ã »ç¿ëÇÒ ¼ö ÀÖ´Â Á¤º¸·®ÀÌ Á¦ÇÑÀûÀÌ´Ù. ¶ÇÇÑ ±âÁ¸ º¹¼ö¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ýÀº ´ÜÀÏ ¿µ»óÀ» »ç¿ëÇßÀ» °æ¿ìº¸´Ù ¿µ»óÀÇ º¸°£ ½Ã ¸¹Àº Á¤º¸¸¦ »ç¿ëÇÒ ¼ö ÀÖÀ¸³ª ¿µ»óÀÇ ³»¿ë¿¡ µû¶ó ±â¹ýÀÇ Àû¿ëÀÌ Á¦ÇÑÀûÀÌ°í, ÄÆ(cut)ÀÇ °æ°è ºÎ±Ù¿¡¼­ ±â¹ýÀÇ ¼º´ÉÀÌ ¸Å¿ì ¶³¾îÁö´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. Á¦¾ÈµÈ ±â¹ý¿¡¼­´Â ÄÆ °ËÃâ(cut-detection) ±â¹ýÀ» ÅëÇØ °¢ Àå¸éÀÇ °æ°è ºÎ±Ù¿¡¼­ ÀûÀÀÀûÀ¸·Î ´ÜÀÏ¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ýÀ» »ç¿ëÇÑ´Ù. ¶ÇÇÑ ¿òÁ÷ÀÓ º¤ÅÍÀÇ Á¤±ÔÈ­ ¹× ºí·Ï ´ÜÀ§ÀÇ À±°û¼±(edge) ÆÐÅÏ ºÐ¼®À» ÅëÇØ ¿©·¯ Á¦ÇÑÁ¶°Ç¿¡ °­ÇÑ º¹¼ö ¿µ»ó ±â¹ÝÀÇ ÃÊ°íÇØ»óµµ ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ½ÇÇèÀ» ÅëÇÏ¿© Á¦¾ÈµÈ ±â¹ýÀÌ °´°üÀû, ÁÖ°üÀûÀ¸·Î ±âÁ¸ÀÇ ±â¹ýº¸´Ù ¿ì¼öÇÑ ¼º´ÉÀ» º¸ÀÌ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
In this paper, we propose a hybrid super-resolution algorithm robust to cut-change. Existing single-frame based super-resolution algorithms are usually fast, but quantity of information for interpolation is limited. Although the existing multi-frame based super-resolution algorithms generally robust to this problem, the performance of algorithm strongly depends on motions of input video. Furthemore at boundary of cut, applying of the algorithm is limited. In the proposed method, we detect a define boundary of cut using cut-detection algorithm. Then we adaptively apply a single-frame based super-resolution method to detected cut. Additionally, we propose algorithms of normalizing motion vector and analyzing pattern of edge to solve various problems of existing super-resolution algorithms. The experimental results show that the proposed algorithm has better performance than other conventional interpolation methods.
Å°¿öµå(Keyword) º¸°£¹ý   ÃÊ°íÇØ»óµµ ±â¹ý   ºÎÈ­¼Ò   ¿òÁ÷ÀÓ ÃßÁ¤   ÀÌ»ê ¿þÀÌºí¸´   interpolation   super-resolution   sub-pixel   motion estimation   discrete wavelet transform  
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