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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö B

Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö B

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) AAM ±â¹Ý ¾ó±¼ Ç¥Á¤ ÀνÄÀ» À§ÇÑ ÀÔ¼ú Ư¡Á¡ °ËÃâ ¼º´É Çâ»ó ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) A Study on Enhancing the Performance of Detecting Lip Feature Points for Facial Expression Recognition Based on AAM
ÀúÀÚ(Author) ÇÑÀºÁ¤   °­º´ÁØ   ¹Ú°­·É   Eun Jung Han   Byung Jun Kang   Kang Ryoung Park  
¿ø¹®¼ö·Ïó(Citation) VOL 16-B NO. 04 PP. 0299 ~ 0308 (2009. 08)
Çѱ۳»¿ë
(Korean Abstract)
AAM(Active Appearance Model)Àº PCA(Principal Component Analysis)¸¦ ±â¹ÝÀ¸·Î °´Ã¼ÀÇ ÇüÅÂ(shape)¿Í Áú°¨(texture) Á¤º¸¿¡ ´ëÇÑ Åë°èÀû ¸ðµ¨À» ÅëÇØ ¾ó±¼ÀÇ Æ¯Â¡Á¡À» °ËÃâÇÏ´Â ¾Ë°í¸®ÁòÀ¸·Î ¾ó±¼ÀνÄ, ¾ó±¼ ¸ðµ¨¸µ, Ç¥Á¤Àνİú °°Àº ÀÀ¿ë¿¡ ³Î¸® »ç¿ëµÇ°í ÀÖ´Ù. ÇÏÁö¸¸, AAM¾Ë°í¸®ÁòÀº Ãʱ⠰ª¿¡ ¹Î°¨ÇÏ°í ÀԷ¿µ»óÀÌ ÇнÀ µ¥ÀÌÅÍ ¿µ»ó°úÀÇ Â÷ÀÌ°¡ Ŭ °æ¿ì¿¡´Â °ËÃâ ¿¡·¯°¡ Áõ°¡µÇ´Â ¹®Á¦°¡ ÀÖ´Ù. ƯÈ÷, ÀÔÀ» ´Ù¹® ÀÔ·Â ¾ó±¼ ¿µ»óÀÇ °æ¿ì¿¡´Â ºñ±³Àû ³ôÀº °ËÃâ Á¤È®µµ¸¦ ³ªÅ¸³»Áö¸¸, »ç¿ëÀÚÀÇ Ç¥Á¤¿¡ µû¶ó ÀÔÀ» ¹ú¸®°Å³ª ÀÔÀÇ ¸ð¾çÀÌ º¯ÇüµÈ ¾ó±¼ ÀÔ·Â ¿µ»óÀÇ °æ¿ì¿¡´Â ÀÔ¼ú¿¡ ´ëÇÑ °ËÃâ ¿À·ù°¡ ¸Å¿ì Áõ°¡µÇ´Â ¹®Á¦Á¡ÀÌ ÀÖ´Ù. ÀÌ·¯ÇÑ ¹®Á¦Á¡À» ÇØ°áÇϱâ À§ÇØ º» ³í¹®¿¡¼­´Â ÀÔ¼ú Ư¡Á¡ °ËÃâÀ» ÅëÇØ Á¤È®ÇÑ ÀÔ¼ú ¿µ¿ªÀ» °ËÃâÇÑ ÈÄ¿¡ ÀÌ Á¤º¸¸¦ ÀÌ¿ëÇÏ¿© AAMÀ» ¼öÇàÇÔÀ¸·Î½á ¾ó±¼ Ư¡Á¡ °ËÃâ Á¤È®¼ºÀ» Çâ»ó½ÃÅ°´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù.
º» ³í¹®¿¡¼­´Â AAMÀ¸·Î °ËÃâÇÑ ¾ó±¼ Ư¡Á¡ Á¤º¸¸¦ ±â¹ÝÀ¸·Î Ãʱâ ÀÔ¼ú Ž»ö ¿µ¿ªÀ» ¼³Á¤ÇÏ°í, Ž»ö ¿µ¿ª ³»¿¡¼­ Canny °æ°è °ËÃâ ¹× È÷½ºÅä±×·¥ ÇÁ·ÎÁ§¼Ç ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ÀÔ¼úÀÇ ¾ç ³¡Á¡À» ÃßÃâÇÑ ÈÄ, ÀÔ¼úÀÇ ¾ç ³¡Á¡À» ±â¹ÝÀ¸·Î Àç¼³Á¤µÈ Ž»ö¿µ¿ª ³»¿¡¼­ ÀÔ¼úÀÇ Ä®¶ó Á¤º¸¿Í ¿¡Áö Á¤º¸¸¦ ÇÔ²² °áÇÕÇÔÀ¸·Î½á ÀÔ¼ú °ËÃâÀÇ Á¤È®µµ ¹× 󸮼ӵµ¸¦ Çâ»ó½ÃÄ×´Ù.
½ÇÇè°á°ú, AAM ¾Ë°í¸®ÁòÀ» ´Üµ¶À¸·Î »ç¿ëÇÒ ¶§º¸´Ù, Á¦¾ÈÇÑ ¹æ¹ýÀ» »ç¿ëÇÏ¿´À» °æ¿ì ÀÔ¼ú Ư¡Á¡ °ËÃâ RMS(Root Mean Square) ¿¡·¯°¡ 4.21Çȼ¿¸¸Å­ °¨¼ÒÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
AAM(Active Appearance Model) is an algorithm to extract face feature points with statistical models of shape and texture information based on PCA(Principal Component Analysis). This method is widely used for face recognition, face modeling and expression recognition. However, the detection performance of AAM algorithm is sensitive to initial value and the AAM method has the problem that detection error is increased when an input image is quite different from training data. Especially, the algorithm shows high accuracy in case of closed lips but the detection error is increased in case of opened lips and deformed lips according to the facial expression of user. To solve these problems, we propose the improved AAM algorithm using lip feature points which is extracted based on a new lip detection algorithm.

In this paper, we select a searching region based on the face feature points which are detected by AAM algorithm. And lip corner points are extracted by using Canny edge detection and histogram projection method in the selected searching region. Then, lip region is accurately detected by combining color and edge information of lip in the searching region which is adjusted based on the position of the detected lip corners. Based on that, the accuracy and processing speed of lip detection are improved.

Experimental results showed that the RMS(Root Mean Square) error of the proposed method was reduced as much as 4.21 pixels compared to that only using AAM algorithm.
Å°¿öµå(Keyword) AAM   ÀÔ¼ú °ËÃâ   ij´Ï °æ°è °ËÃâ±â   È÷½ºÅä±×·¥ Åõ¿µ   ¾ó±¼ Ç¥Á¤ ÀνĠ  Active Appearance Model   Lip Detection   Canny Edge Detector   Histogram Projection   Facial Expression Recognition  
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