Rob Hess - School of EECS @ Oregon State University
''CS 559 Term Project''\n\nVoxel coloring is a technique used to create a 3D scene reconstruction from a fairly sparse set of images. Perhaps the most useful aspect of this technique is the fact that it can be used to create a photorealistic scene reconstruction without computing image correspondences. For my CS 559 term project, I implemented and tested the 3D voxel coloring algorithm as describe
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FLAB : Computer Vision for Visual Surveillance and Mobile Robotics
一般物体èªè˜å•é¡Œã¨ã—ã¦ç”»åƒåˆ†é¡žã‚„物体検出ã®ç ”究ãŒç››ã‚“ã«å–り組ã¾ã‚Œã¦ã„る。画åƒåˆ†é¡žã§ç”¨ã„られã¦ã„ã‚‹Bag-of-Keypointsã¨ã„ã†ã‚¢ãƒ—ãƒãƒ¼ãƒã§ã¯ã€å±€æ‰€ç‰¹å¾´é‡ã¨ã—ã¦å‹¾é…æƒ…å ±ã‹ã‚‰ç®—出ã•ã‚Œã‚‹SIFT(Scale Invariant Feature Transform)ãŒç”¨ã„られã¦ã„る。SIFTã¯ã€ã‚¹ã‚±ãƒ¼ãƒ«å¤‰åŒ–ã€å›žè»¢å¤‰åŒ–ã«ä¸å¤‰ãªç‰¹å¾´é‡ã‚’記述ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ãŸã‚ã€ç‰¹å®šç‰©ä½“èªè˜ã ã‘ã§ãªãç”»åƒåˆ†é¡žã®ç‰¹å¾´é‡ã¨ã—ã¦æœ‰åŠ¹ã§ã‚る。一方ã€æ©è¡Œè€…èªè˜ç‰ã®ç‰©ä½“検出ã«ãŠã„ã¦ã‚‚ã€å±€æ‰€ç‰¹å¾´é‡ã¨ã—ã¦å‹¾é…æƒ…å ±ã‹ã‚‰ç®—出ã™ã‚‹å‹¾é…æ–¹å‘ヒストグラムHOG （Histogram of Oriented Gradients)ãŒç”¨ã„られã¦ã„る。本ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã§ã¯ã€å‹¾é…æƒ…å ±ã‹ã‚‰å¾—られる局所特徴é‡ã¨ã—ã¦SIFTã¨HOGã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã«ã¤ã„ã¦ç´¹ä»‹ã—ã€ä¸€èˆ¬ç‰©ä½“èªè˜ã¸ã®åˆ©ç”¨æ–¹æ³•ã«ã¤ã„ã¦è¬›æ¼”ã™ã‚‹ã€‚
Takashi AOKI
I'm Takashi Aoki (é’木 è²´å¸). I'm currently working as CTO at Xcoo, Inc (æ ªå¼ä¼šç¤¾ãƒ†ãƒ³ã‚¯ãƒ¼). I'm always happy to give advice or connect with people doing interesting work! :D About Takashi AOKI / é’木 è²´å¸ a.k.a. federkasten Icon Works April 2011 - Present: Hacker/Co-Founder/CTO at Xcoo, Inc. August 2008 - February 2013: Researcher at Geisha Tokyo Entertainment, Inc. July 2008 - March 2009: Chief creator at the IP
SIFT Tutorial
è—¤å‰å¼˜äº˜. "Gradientベースã®ç‰¹å¾´æŠ½å‡º - SIFTã¨HOG - ", æƒ…å ±å‡¦ç†å¦ä¼š ç ”ç©¶å ±å‘Š CVIM 160, pp. 211-224, 2007. Scale-Invariant Feature Transform(SIFT) ã¯ï¼Œç‰¹å¾´ç‚¹ã®æ¤œå‡ºã¨ç‰¹å¾´é‡ã®è¨˜è¿°ã‚’è¡Œã†ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã‚る． 検出ã—ãŸç‰¹å¾´ç‚¹ã«å¯¾ã—ã¦ï¼Œç”»åƒã®å›žè»¢ãƒ»ã‚¹ã‚±ãƒ¼ãƒ«å¤‰åŒ–・照明変化ç‰ã«é ‘å¥ãªç‰¹å¾´é‡ã‚’記述ã™ã‚‹ãŸã‚，イメージモザイクç‰ã®ç”»åƒã®ãƒžãƒãƒ³ã‚°ã‚„物体èªè˜ãƒ»æ¤œå‡ºã«ç”¨ã„られã¦ã„る． 本稿ã§ã¯ï¼ŒSIFT ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã«ã¤ã„ã¦æ¦‚説ã—，具体例ã¨ã—ã¦SIFT を用ã„ãŸã‚¢ãƒ—リケーションや応用手法ã¸ã®å±•é–‹ã«ã¤ã„ã¦ç´¹ä»‹ã™ã‚‹ï¼Žã¾ãŸï¼ŒSIFT ã¨åŒæ§˜ã«gradient ベースã®ç‰¹å¾´æŠ½å‡ºæ³•ã§ã‚ã‚‹Histograms of Oriented Gradients(HOG)ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¨ãã®å¿œç”¨ä¾‹ã¨ã—ã¦äººæ¤œå‡ºã«ã¤ã„ã¦ã‚‚紹介ã™ã‚‹ï¼Ž Scal
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