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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 :

ÇѱÛÁ¦¸ñ(Korean Title) ¹øÈ£ÆÇ Á¤±ÔÈ­¿¡ ÀÇÇÑ ÀÎ½Ä ¼º´É Çâ»ó ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Recognition Performance Enhancement by License Plate Normalization
ÀúÀÚ(Author) ±èµµÇö   °­¹Î°æ   Â÷ÀÇ¿µ   Do-Hyeon Kim   Min-Kyung Kang   Eui-Young Cha  
¿ø¹®¼ö·Ïó(Citation) VOL 12 NO. 07 PP. 1278 ~ 1290 (2008. 07)
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(Korean Abstract)
º» ³í¹®Àº ÀÚµ¿Â÷ ¹øÈ£ÆÇ ÀÎ½Ä ½Ã½ºÅÛÀÇ Àü¹ÝÀûÀÎ ¼º´ÉÀ» Çâ»ó½ÃÅ°±â À§ÇÑ Àüó¸® ¹æ¹ý°ú ½Å°æȸ·Î¸ÁÀ» ÀÌ¿ëÇÑ ¹®ÀÚ Àνı⸦ Á¦¾ÈÇÑ´Ù. ¸ÕÀú ÀÚµ¿Â÷ ¹øÈ£ÆÇ ¿µ»ó¿¡¼­ ¹øÈ£ÆÇÀÇ ¿Ü°û Á÷¼±À» °¡»ó Á÷¼± ¸ÅĪ¿¡ ÀÇÇØ °ËÃâÇÏ°í °ËÃâµÈ Á÷¼±ÀÇ ±³Á¡À» ±¸ÇÏ¿© 4°³ÀÇ ¿Ü°û ²ÀÁöÁ¡À» ±¸ÇÑ´Ù. 4°³ÀÇ ²ÀÁöÁ¡ ÁÂÇ¥¿¡ ÀÇÇØ ¾ç¼±Çü º¯È¯À¸·Î Á÷»ç°¢Çü ¸ð¾çÀÇ ¹øÈ£ÆÇ ¿µ»óÀ¸·Î Á¤±ÔÈ­ÇÑ´Ù. Á¤±ÔÈ­µÈ ¹øÈ£ÆÇ ¿µ»óÀ¸·ÎºÎÅÍ ¹®ÀÚ¸¦ ÃßÃâÇÑ µÚ Delta-bar-delta ¾Ë°í¸®Áò¿¡ ÀÇÇØ ÇнÀµÈ ½Å°æȸ·Î¸Á ±â¹Ý Àνıâ·Î ¹øÈ£ÆÇÀ» ÀνÄÇÑ´Ù. ´Ù¾çÇÑ È¯°æ¿¡¼­ ȹµæµÈ ÀÚµ¿Â÷ ¹øÈ£ÆÇ ¿µ»óÀ» ´ë»óÀ¸·Î ½ÇÇèÇÑ °á°ú Á¦¾ÈµÈ ¹øÈ£ÆÇ À̹ÌÁöÀÇ Á¤±ÔÈ­¿¡ ÀÇÇØ ÀÎ½Ä ¼º´ÉÀÌ 16%±îÁö Çâ»óµÊÀ» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
This paper proposes a preprocessing method and a neural network based character recognizer to enhance the overall performance of the license plate recognition system. First, plate outlines are extracted by virtual line matching, and then the 4 vertexes are obtained by calculating intersecting points of extracted lines. By these vertexes, plate image is reconstructed as rectangle-shaped image by bilinear transform. Finally, the license plate is recognized by the neural network based classifier which had been trained using delta-bar-delta algorithm. Various license plate images were used in the experiments, and the proposed plate normalization enhanced the recognition performance up to 16 percent.
Å°¿öµå(Keyword) ÀÚµ¿Â÷ ¹øÈ£ÆÇ ÀÎ½Ä ½Ã½ºÅÛ   ¹øÈ£ÆÇ Á¤±ÔÈ­   ¹øÈ£ÆÇ ±â¿ï±â º¸Á¤   Delta-bar-delta ¾Ë°í¸®Áò  
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