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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 : 4 / 19 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ÅäÅ« ¹öŶÀ» ÀÌ¿ëÇÑ ³·Àº ºñÆ®À² ºñµð¿ÀÀÇ ½Ç½Ã°£ ºñÆ®À² Á¦¾î
¿µ¹®Á¦¸ñ(English Title) Real-Time Rate Control with Token Bucket for Low Bit Rate Video
ÀúÀÚ(Author) ¹Ú»óÇö   ¿À¿ø±Ù   Sang-Hyun Park   Won-Geun Oh  
¿ø¹®¼ö·Ïó(Citation) VOL 10 NO. 12 PP. 2315 ~ 2320 (2006. 12)
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(Korean Abstract)
³·Àº ´ë¿ªÆøÀ» °¡Áö´Â ³×Æ®¿÷À» ÅëÇØ ºñµð¿À¸¦ Àü¼ÛÇϱâ À§ÇØ °³¹ßµÈ H.263°ú °°Àº ³·Àº ºñÆ®À² ºñµð¿À´Â ´ë¿ªÆø¿¡ ¸Â°Ô Ãâ·Â µ¥ÀÌÅ͸¦ Á¶ÀýÇÏ¿©¾ß ÇÑ´Ù. º» ³í¹®¿¡¼­´Â ÅäÅ« ¹öŶ ¾Ë°í¸®ÁòÀ» »ç¿ëÇÏ¿© ÀÔ·Â Æ®·¡ÇÈÀ» °ü¸®ÇÏ´Â ³×Æ®¿÷¿¡ ÀûÇÕÇÑ ºñÆ®À² Á¦¾î ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ¾Ë°í¸®ÁòÀº °è»êÀÇ º¹Àâµµ¸¦ ÁÙÀ̱â À§ÇØ ¹Ýº¹ ¿¬»êÀ» ¼öÇàÇÏÁö ¾Ê´Â ÃÖ ÀûÈ­ ¹æ¹ýÀ» »ç¿ëÇÏ¿´°í, Àüü ½ÃÄö½ºÀÇ Æò±Õ ¿Ö°îÀ» ÃÖ¼ÒÈ­Çϸ鼭µµ ÀÎÁ¢ ÇÁ·¹ÀÓ »çÀÌÀÇ ¿Ö°î Â÷À̸¦ ÃÖ¼ÒÈ­Çϵµ·Ï ¾Ë°í¸®ÁòÀ» ¼³°èÇÏ¿´´Ù. ºñµð¿À Ç°ÁúÀÇ º¯µ¿À» °¨¼Ò½ÃÅ°±â À§ÇÏ¿© Á¦¾ÈµÈ ¹æ¹ýÀº ½½¶óÀ̵ù À©µµ¿ì °³³äÀ» µµÀÔÇÏ¿´À¸¸ç, ÀÌ ¹æ¹ýÀº ¼±ºÐ¼®(pre-analysis) 󸮸¦ ¿ä±¸ÇÏÁö ¾Ê´Â Ư¡ÀÌ ÀÖ´Ù. µû¶ó¼­, Á¦¾ÈµÈ ¾Ë°í¸®ÁòÀº ºñµð¿À¸¦ ¾ÐÃàÇÒ ¶§ Ãß°¡Àû ÀÎ Áö¿¬À» ÇÊ¿ä·Î ÇÏÁö ¾Ê°Ô µÇ¾î ½Ç½Ã°£ ó¸®¿Í ³·Àº º¹Àâµµ¸¦ ¿ä±¸ÇÏ´Â ºñµð¿À ¾ÐÃà±â¿¡ Àû¿ëµÉ ¼ö ÀÖ´Ù. ½ÇÇè °á°ú¿¡¼­ Á¦¾ÈµÈ ¹æ¹ýÀº ±âÁ¸ÀÇ ºñÆ®À² Á¦¾î ¾Ë°í¸®Áò¿¡ ºñÇØ ¿µ»óÀÇ Ç°ÁúÀÌ ¿ì¼öÇÑ °ÍÀ» º¸¿©ÁØ´Ù.
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(English Abstract)
A real-time frame-layer rate control algorithm with a token bucket traffic shaper is proposed for low bit rate video coding. The proposed rate control method uses a non-iterative optimization method for low computational complexity, and performs bit allocation at the frame level to minimize the average distortion over an entire sequence as well as variations in distortion between frames. In order to reduce the quality fluctuation, we use a sliding window scheme which does not require the pre-analysis process. Therefore, the proposed algorithm does not produce time delay from encoding, and is suitable for real-time low-complexity video encoder. Experimental results indicate that the proposed control method provides better visual and PSNR performances than the existing rate control method.
Å°¿öµå(Keyword) frame-layer rate control   token bucket traffic shaper   video traffic management  
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