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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ¼ÒÇÁÆ®¿þ¾î ¹× µ¥ÀÌÅÍ °øÇÐ

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) Back-ProjectionÀ» È°¿ëÇÑ È«»ï ³»ºÎ ÃøÁ¤ ½Ã½ºÅÛ
¿µ¹®Á¦¸ñ(English Title) A Red Ginseng Internal Measurement System Using Back-Projection
ÀúÀÚ(Author) ¹ÚÀ翵   ÀÌ»óÁØ   Jaeyoung Park   Sangjoon Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 07 NO. 10 PP. 0377 ~ 0382 (2018. 10)
Çѱ۳»¿ë
(Korean Abstract)
º» ¿¬±¸´Â È«»ï µî±Þ ÆÇÁ¤À» À§ÇÑ ³»ºÎ »óÅ ¹× Á¶Á÷ÀÇ Ä¡¹Ðµµ ºÐ¼® ¹æ¹ý¿¡ °üÇÑ °ÍÀÌ´Ù. È«»ï ³»ºÎ ÃøÁ¤À» À§ÇØ 1990³â´ë ÀÌÈĺÎÅÍ´Â ÀÚ±â°ø¸í¿µ»ó¹ý(MRI), X-ray ÆǺ° µîÀÇ ºñÆı« °Ë»ç ¹æ¹ý¿¡ ´ëÇÑ ¿¬±¸°¡ ´Ù¾çÇÏ°Ô ÀÌ·ç¾îÁ³Áö¸¸, µî±Þ ÆÇÁ¤¿¡ °¡Àå Áß¿äÇÑ ³»°ø(Ò®Íö), ³»¹é(Ò®ÛÜ)À» ÆľÇÇϴµ¥ ¾î·Á¿òÀÌ ÀÖ¾î Á¤È®ÇÑ ³»ºÎ ÆÇÁ¤ÀÌ ºÒ°¡´ÉÇÏ¿´´Ù. ±×¸®ÇÏ¿© º» ¿¬±¸¿¡¼­´Â Àû¿Ü¼± Á¶¸í ȯ°æÀÇ Æó¼âÇü ¿µ»ó Ãëµæ ÀåÄ¡¸¦ Á¦ÀÛÇÏ°í ³»°ø, ³»¹éÀÇ À¯¹«¿Í Á÷°æÀ» ÆľÇÇÒ ¼ö ÀÖ´Â ³»ºÎ ÃøÁ¤ ½Ã½ºÅÛÀ» °³¹ßÇÏ¿´´Ù. Á¦ÀÛÇÑ ÀåÄ¡´Â È«»ï ³»ºÎ Åõ°úÀ²ÀÌ ³ôÀº 950nm ÆÄÀå´ë¿ªÀÇ Àû¿Ü¼± Á¶¸í, Àû¿Ü¼± ´ë¿ª ÃÔ¿µÀÌ °¡´ÉÇÑ Ä«¸Þ¶ó, Ä«¸Þ¶ó¿¡ È«»ïÀÇ ÃÊÁ¡À» ÀÚµ¿Á¦¾î ÇÒ ¼ö ÀÖ´Â YÃà Á¦¾î ¾×Ãß¿¡ÀÌÅÍ ±×¸®°í È«»ïÀ» 1¡ÆÀÇ °£°ÝÀ¸·Î 360¡Æ ȸÀüÇÏ¸ç ¿µ»óÀ» ÃëµæÇÒ ¼ö Àִ ȸÀü ¾×Ãß¿¡ÀÌÅÍ·Î ±¸¼ºÀÌ µÇ¾îÀÖ´Ù. Á¦¾ÈÇÏ´Â ¾Ë°í¸®ÁòÀº YÃà ¾×Ãß¿¡ÀÌÅÍ¿¡¼­ Auto-Focus ¾Ë°í¸®ÁòÀ» ¼öÇàÇÏ¿© È«»ïÀÇ Å©±â¿Í µÎ²² º¯È­¿¡ µû¶ó °´Ã¼ÀÇ ¼±¸íÇÑ ÃÊÁ¡À» ÀÚµ¿À¸·Î ¸ÂÃçÁØ´Ù. ±×´ÙÀ½ È«»ïÀ» 1¡Æ °£°ÝÀ¸·Î 360¡Æ ȸÀüÇϸç ÃÑ 360ÀåÀÇ È«»ï ¿µ»óÀ» ÃëµæÇÏ¸é ¶óµ· º¯È¯(Radon transform)À» ÅëÇØ »çÀ̳ë±×·¥(Sinogram)À¸·Î À籸¼ºÇÏ°í, ¿ª ¶óµ· º¯È¯(Inverse Radon transform)À» ÅëÇØ ´ÜÃþ¿µ»óº¹¿ø(Back-projection) ¾Ë°í¸®ÁòÀÌ ¼öÇàµÇ¾î È«»ï ³»ºÎ ¿µ»óÀ» ȹµæÇÏ¿´´Ù. ¾Ë°í¸®Áò ¼öÇà °á°ú È«»ï µÎ²²³ª ¸ð¾ç¿¡ °ü°è¾øÀÌ ³»ºÎ ´Ü¸é¿µ»ó ȹµæÀÌ °¡´ÉÇÏ¿´°í ¿µ»óÀ» ÅëÇØ ³»°ø, ³»¹éÀÇ À¯¹«¿Í Á÷°æÀ» ÆľÇÇÒ ¼ö ÀÖ¾ú´Ù. ÃßÈÄ 10,000°³ ÀÌ»óÀÇ ´Ù¾çÇÑ ¸ð¾ç°ú Å©±â¸¦ °¡Áö´Â È«»ï¿¡ ´ëÇÏ¿© ³»ºÎ ¿µ»óÀ» ÃëµæÇÏ¿© µî±Þ ÆǺ° ±âÁØÀ» Àû¿ëÇÑ´Ù¸é ½Å·Ú¼º ÀÖ´Â È«»ï µî±Þ ÀÚµ¿È­ ÃøÁ¤ ¹æ¹ýÀ¸·Î »ç¿ë°¡´É ÇÒ °ÍÀÌ´Ù.
¿µ¹®³»¿ë
(English Abstract)
This study deals with internal state and tissue density analysis methods for red ginseng grade determination. For internal measurement of red ginseng, there have been various studies on nondestructive testing methods since the 1990s, It was difficult to grasp the most important inner hole and inside whites in the grading. So in this study, we developed a closed capturing device for infra-red illumination environment, and developed an internal measurement system that can detect the presence and diameter of inner hole and inside whites. Made devices consisted of infrared lights with a high transmission rate of red ginseng in 920 nanometer wave band, a infra-red camera and a Y axis actuator with a red ginseng automatically controlled focus on the camera. The proposed algorithm performs an auto-focus system on the Y-axis actuator to automatically adjust the sharp focus of the object according to the size and thickness. Then red ginseng is rotated 360¡Æ at 1¡Æ intervals and 360 total images are acquired, and reconstructed as a sinogram through Radon transform and Back-projection algorithm was performed to acquire internal images of red ginseng. As a result of the algorithm, it was possible to acquire internal cross-sectional image regardless of the thickness and shape of red ginseng. In the future, if more than 10,000 different shapes and sizes of red ginseng internal cross-sectional image are acquired and the classification criterion is applied, it can be used as a reliable automated ginseng grade automatic measurement method.
Å°¿öµå(Keyword) È«»ï ³»ºÎ ºÐ¼® ½Ã½ºÅÛ   ´ÜÃþ ¿µ»ó º¹¿ø ¾Ë°í¸®Áò   È«»ï µî±Þ ÆÇÁ¤   »çÀ̳ë±×·¥   ÀÚµ¿ ÃÊÁ¡ ¾Ë°í¸®Áò   A Internal Analysis System of Red Ginseng   Tomographic Image Restoration Algorithm   Red Ginseng Grade Determination   Sinogram   Auto Focus Algorithm  
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