Research
Home
>>
Research
Introduction
Integral Imaging
Human Skeleton
Hologram
Manufacturing Bigdata
Educational Simulation
3D Scanner / 3D Printer
Mobile Application
Web Application
MAR
   
(Mixed Augmented Reality)
MedicalEducation
BIGDAS
CBNU VR
Respiratory System
Multimodal Interfaces In Virtual Training Systems
Integral Imaging
Á¦¸ñ ¾øÀ½
1. Intro
Á÷Á¢¿µ»ó±â¼úÀº ¹«¾È°æ½Ä 3Â÷¿ø µð½ºÇ÷¹ÀÌ ¹æ½ÄÀÇ Çϳª·Î, 1908³â Lippmann¿¡ ÀÇÇؼ Á¦¾È µÇ¾ú´Ù. ÁýÀû¿µ»ó ½Ã½ºÅÛ(integral imaging system)Àº ¿©·¯ °³ÀÇ ±âÃÊ ·»Áî(elemental lens)µé·Î ±¸¼ºµÈ ·»Áî ¾î·¹ÀÌ(lens array)¸¦ ÀÌ¿ëÇÏ¿© ´ë»ó¹°ÀÇ 3Â÷¿ø Á¤º¸¸¦ ±âÃÊ À̹ÌÁö(elemental image)ÀÇ ÇüÅ·ΠÀúÀåÇÏ°í, ±× ±âÃÊ ¿µ»óÀ» ´Ù½Ã ·»Áî ¾î·¹À̸¦ ÅëÇÏ¿© 3Â÷¿ø ¿µ»óÀ¸·Î ÁýÀû½ÃÅ°´Â ÀåÄ¡ÀÌ´Ù. µû¶ó¼ ÀÌµé ½Ã½ºÅÛ¿¡¼ °¡Àå ÇÙ½ÉÀûÀÎ ºÎºÐÀÌ ±âÃÊ ¿µ»óÀ» ¸¸µå´Â ÇȾ÷(pickup) ÀÛ¾÷°ú ±âÃÊ ¿µ»óÀ» 3Â÷¿ø ¿µ»óÀ¸·Î µð½ºÇ÷¹ÀÌ(display)ÇÏ´Â ÀÛ¾÷ÀÌ´Ù. ÇȾ÷ °úÁ¤¿¡¼ÀÇ ¿¬±¸´Â ±âÃÊ ¿µ»óÀ» ºü¸£°í, Á¤È®ÇÏ°Ô ¾ò´Â ¹æ¹ý¿¡ ´ëÇÏ¿© ¿¬±¸°¡ ÁøÇà ÁßÀ̸ç, µð½ºÇ÷¹ÀÌ °úÁ¤¿¡¼ÀÇ ¿¬±¸´Â ¾ó¸¶³ª ¼±¸íÇÏ°í, ³ÐÀº ½Ã¾ß°¢À» È®º¸ÇÒ ¼ö ÀÖ´ÂÁö¿¡ °üÇÑ ¿¬±¸°¡ È°¹ßÇÏ°Ô ÁøÇà ÁßÀÌ´Ù. ÇȾ÷ °úÁ¤¿¡ ÃÊÁ¡À» ¸ÂÃß¾î ¹ÙÀÌ¿À ¸ÞƼÄà µ¥ÀÌÅ͸¦ Àû¿ëÇÏ¿© ºü¸£°Ô ¿µ»óÀ» ¾ò´Â ¹æ¹ýÀ» ¿¬±¸ ÁßÀÌ´Ù.
2. Pick-Up
Á÷Á¢¿µ»ó±â¹ý(Integral Imaging)ÀÇ ±âº» °³³äµµ ÀÌ´Ù. 3D ¹°Ã¼(object)´Â ÇϳªÀÇ ·»Áî°¡ ¾Æ´Ñ ¿©·¯ °³ÀÇ ·»ÁîµéÀÌ ´Ù¸¥ À§Ä¡¿¡¼ °¢°¢ÀÇ ´Ù¸¥ À̹ÌÁö¸¦ ¾ò¾î¾ß ÇÑ´Ù. ·»Áî´Â ¾î·¹ÀÌ·Î ±¸¼ºµÇ¾î ÀÖ´Ù. ·»ÁîÀÇ Á¾·ù´Â ·»ÁîÅ©±â(lens size)¿Í ·»Áî ÃÊÁ¡°Å¸®(focal length) µû¶ó¼ °áÁ¤µÈ´Ù. ÇÏÁö¸¸, ·»Áî¾î·¹ÀÌÀÇ ¸ðµç ·»ÁîÀÇ Á¾·ù´Â °°´Ù. °¢°¢ÀÇ ·»Á´Ù ¾ò°Ô µÇ´Â À̹ÌÁöµéÀº ¹èÄ¡µÇ´Â ·»ÁîÀÇ À§Ä¡¿Í ·»ÁîÀÇ Á¾·ù¿¡ µû¶ó¼ ´Þ¶óÁø´Ù.
3. Algorithm
ÇȾ÷ °úÁ¤¿¡ °üÇÑ ¾Ë°í¸®ÁòÀº ´ëÇ¥ÀûÀ¸·Î PRR(Point Retracing Rendering), MVR(Multiple Viewpoint Rendering), PGR(Parallel Group Rendering), VVR(Viewpoint Vector Rendering)¹æ¹ýÀÌ ÀÖ´Ù.
PRR ¹æ½ÄÀº ·»Á ÅëÇؼ µð½ºÇ÷¹ÀÌ¿¡ »óÀÌ ¸ÎÈ÷´Â ºÎºÐÀ» ÇϳªÇϳª °è»êÇÏÀÇ Ã£¾Æ ÁÖ°Ô µÈ´Ù. ±âÃÊ ¿µ»óÀÇ ¸ðµç Çȼ¿¿¡ ´ëÇؼ °è»êÀÌ ÀÌ·ïÁ®¾ß Çϱ⠶§¹®¿¡ ½Ç½Ã°£À¸·Î ¾ò¾î¾ß ÇÏ´Â ºÎºÐ¿¡¼ »ç¿ëÇϱ⿡ ÀûÇÕÇÏÁö ¾Ê´Ù.
MVR¹æ½ÄÀº ÄÄÇ»ÅÍ ±×·¡ÇÈÀÎ OpenGLÀ» »ç¿ëÇÏ¿© °¡»óÀ¸·Î ±æÁ¦¿Í °°Àº ±âÃÊ¿µ»óÀ» ¾òÀ» ¼ö ÀÕ´Â ¹æ½ÄÀÌ´Ù. ÄÄÇ»ÅÍ ±×·¡ÇÈÀ» ÀÌ¿ëÇϱ⠶§¹®¿¡ °£´ÜÇϸ鼵µ, Á¤È®ÇÑ ±âÃÊ¿µ»óÀ» ¾òÀ» ¼ö ÀÖÀ¸¸é, ´ÜÀÏ ±âÃÊ¿µ»óÀÇ Å©±â¿¡ ÀüÇô ¿µÇâÀ» ¹ÞÁö ¾Ê´Â´Ù. ÇÏÁö¸¸, ·»Áî¾î·¹ÀÌÀÇ Áõ°¡¿¡ µû¸¥ ½Ã°£Áõ°¡ ¹®Á¦Á¡ÀÌ ÀÖÀ¸¸ç, »ç¿ëµÇ´Â 3D ¹°Ã¼ÀÇ Çػ󵵿¡µµ ¿µÇâÀ» ¹Þ°Ô µÈ´Ù. ·»Áî Áõ°¡¿¡ µû¸¥ ½Ã°£Áõ°¡·Î ÀÎÇØ ½Ç½Ã°£À¸·Î ¾ò´Â ¹æ¹ý¿¡´Â ÀûÇÕÇÏÁö ¾Ê´Ù.
PGR ¹æ½ÄÀº µð½ºÇ÷¹ÀÌ¿¡¼ ·»Á ÅëÇÏ´Â º¤ÅÍ´Â ÇÑÁ¤µÇ¾î ÀÖÀ¸¸ç, Æ÷Ä¿½º ¸ðµå¿¡¼ ÀÌ º¤ÅÍ ¹æÇâÀÇ À̹ÌÁö¸¦ ¾ò°Ô µÇ¸ç, ÀÌ À̹ÌÁö´Â ·»Á ÅëÇØ »ý¼ºµÇ´Â º¤ÅÍÀÇ °³¼ö¸¸Å ¸¸µé°Ô µÈ´Ù. ÀÌ ¿µ»ó¿¡¼ °¢°¢ÀÇ ±âÃÊ¿µ»ó¿¡ ´ëÀÀÇÏ´Â Á¤º¸¸¦ ¸ÅĪ½ÃÅ°°Ô µÇ´Âµ¥, ·»ÁîÀÇ ¼ö°¡ Áõ°¡ÇÏ´õ¶óµµ ½Ã°£Àû ¹®Á¦´Â »ý±âÁö ¾Ê°Ô µÈ´Ù. ÇÏÁö¸¸, Æ÷Ä¿½º ¸ðµå¿¡¼¸¸ »ç¿ëÇØ¾ß Çϸç, ´ÜÀÏ ±âÃÊ¿µ»óÀÇ Å©±â°¡ Áõ°¡ÇÏ°Ô µÇ¸é, ÀÌ ¿ª½Ã ½Ã°£Àû ¹®Á¦Á¡ÀÌ »ý±â°Ô µÈ´Ù.
VVR ¹æ½ÄÀº PGR¹æ½ÄÀ» ÀÌ¿ëÇÏ¿´À¸¸ç, ·»Á ÅëÇØ »ý¼ºµÇ´Â º¤Å͸¦ ÀÏÁ¤ÇÏ°Ô ±×·ìÈÇÏ¿©, º¤ÅÍ ¹æÇâÀÇ À̹ÌÁö¸¦ Àû°Ô ¾ò¾î ½Ã°£À» ´ÜÃà½Ãų ¼ö ÀÖ´Ù. ÇÏÁö¸¸, Á¤¹Ðµµ¸¦ ¿øÇÏ´Â ºÎºÐ¿¡¼´Â ¿Ö°îÇö»óÀ» °ÞÀ» ¼ö ÀÖ´Ù.
4. Publication
[1] Younghee Jang, Chan Park, Jae-Hyeung Park, Nam Kim and Kwan-Hee Yoo, ¡°Parallel Processing for Integral Imaging Pickup Using Multiple Threads¡±,
International Journal of Contents
, Vol. 5, No. 4, pp.30-34, Dec 2009.
[2] Younghee Jang, Chan Park, Ji-Sung Jung, Hye-Jin Lee, Dong-Ook Seong, Jae-Hyeung Park, Nam Kim, Jae-Soo Yoo and Kwan-Hee Yoo, ¡°An Improved Method for Integral Imaging Pickup of Bio-Medical Data using GPU¡±,
Korea Computer Graphics Society
, Oct,9~10,2009.
[3] Younghee Jang, Chan Park, Jae-Hyeung Park and Kwan-Hee Yoo, "Parallelization for integral Imaging Pickup",
International Conference on Convergence Content 2008
, Vol. 6, No. 2, pp63-67., Dec,18~20, 2008.
[4] Younghee Jang, Chan Park, Jae-Hyeung Park and Kwan-Hee Yoo, "PARALLELIZATION FOR COMPUTATIONAL INTEGRAL IMAGING PICKUP",
9th International Conference of KSBSB
, pp.180-182, Nov.13~14,2008.
361-763 ÃæºÏ ûÁֽà Èï´ö±¸ Ãæ´ë·Î1 ÃæºÏ´ëÇб³ S4-1 307 CGAC ¿¬±¸½Ç (TEL : 043-261-2788)
Copyright 2015 CGaC (Computer Graphics & Contents Lab.) Allrights Reserved.