2012³â Ãá°èÇмú´ëȸ
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Ä÷¯ ÇÊÅÍ ¹è¿ ±¸Á¶¸¦ °í·ÁÇÑ È¸é ³» ¿¹Ãø °³¼± ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Enhanced Intra predction for the Characteristics of Color Filter Array |
ÀúÀÚ(Author) |
ÀÌÀçÈÆ
ÀÌöÈñ
Jae-hoon Lee
Chul-hee Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 16 NO. 01 PP. 0656 ~ 0659 (2012. 05) |
Çѱ۳»¿ë (Korean Abstract) |
ÀϹÝÀûÀ¸·Î Ä÷¯ ÇÊÅÍ ¹è¿(Color Filter Array: CFA)·ÎºÎÅÍ È¹µæµÈ ¿µ»óÀº µð¸ðÀÚÀÌÅ·(demosaicking) °úÁ¤À» ÅëÇØ ¼Ò½ÇµÈ Ä÷¯ Á¤º¸¸¦ º¹¿øÇÑ ÈÄ ¾ÐÃàÀ» ¼öÇàÇϹǷΠµ¥ÀÌÅÍÀÇ Áߺ¹¼º(redundancy)ÀÌ ¹ß»ýÇÑ´Ù. µû¶ó¼ ºÎȣȱ⿡¼ º¸°£ °úÁ¤ ¾øÀÌ ¾ÐÃàÀ» ¼öÇàÇÏ°í º¹È£È±â¿¡¼ º¹¿ø µÈ ¿µ»óÀ» º¸°£ÇÏ´Â ¿¬±¸°¡ ÁøÇàµÇ¾î ¿Ô´Ù. ±âÁ¸ ¹æ¹ýÀÌ Àüó¸® °úÁ¤¿¡¼ ¿µ»óÀ» GBR ¶Ç´Â YUV 4:2:2 Çü½ÄÀ¸·Î º¯È¯ÇÏ´Â ¹Ý¸é, º» ³í¹®¿¡¼´Â YCoCg 4:2:2 Çü½ÄÀÇ º¯È¯ ¹æ¹ýÀ» °ÅÃÄ ¾ÐÃàÀ» ¼öÇàÇÑ´Ù. ¶ÇÇÑ ¿µ»óÀÇ G¼ººÐÀÇ »ùÇøµ À§Ä¡¸¦ °í·ÁÇÏ¿© ÈÖµµ ¼ººÐÀÇ H.264 È¸é ³» ¿¹Ãø±âÀÇ ¹æÇ⼺ ¹× ÂüÁ¶ Çȼ¿À» º¯°æÇÏ¿© Àû¿ëÇÏ¿´´Ù. Á¦¾È ¹æ¹ýÀº ±âÁ¸ H.264 YUV4:2:0 ÀÎÆ®¶ó ¿¹Ãø ¹æ¹ý°ú ºñ±³ÇÏ¿© Æò±ÕÀûÀ¸·Î 3.91%ÀÇ ºñÆ®À² °¨¼Ò¿Í 0.04dBÀÇ PSNR Áõ°¡¸¦ º¸¿©ÁØ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In general, images captured by the color filter array are compressed after applying demosaicking process. Since this process introduces data redundancy which can reduce coding efficiency, several methods have been proposed to address this problem. While some conventional approachs convert color format to GBR or YUV 4:2:2 format, we propose to use the YCoCg 4:2:2 format to carry out compression. The proposed method shows an average bits reduction of 3.91% and PSNR increase of 0.04dB compared with H.264 YUV 4:2:0 intra-profile prediction method.
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Å°¿öµå(Keyword) |
Color filter array
Demosaicking
Compression
YCoCg 4:2:2
H.264 intra prediction
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ÆÄÀÏ÷ºÎ |
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