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3D À籸¼º(Reconstruction): n
´Ù¾çÇÑ µ¥ÀÌÅÍ Å¸ÀÔ¿¡¼ ±âÇÏÇÐÀû(Geometric) ¸ðµ¨ »ý¼º. n
À籸¼º Çϱ⿡ ÇÊ¿äÇÑ À̹ÌÁö ó¸® ¹× Áö¿À¸ÞÆ®¸®
°è»êÀÇ Çõ½ÅÀûÀÌ°í °·ÂÇÑ ¾Ë°í¸®Áò Á¦°ø. |
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´Ù¾çÇÑ µ¥ÀÌÅÍ Å¸ÀÔ¿¡¼ ±âÇÏÇÐÀû(Geometric) ¸ðµ¨ »ý¼º: n 3D À̹ÌÁöÀÇ ºÐÇÒ(Segmentation)À»
ÅëÇÑ 3D ¼ÆäÀ̽º(Surfaces) »ý¼º: - °æ°è Ç¥¸éµéÀ»(Boundary faces) Æú¸®°ï(Polygon) ¸Þ½¬·Î Ç¥Çö. - Automatic, Interactive. n 3D º¼·ý ¸Þ½¬ »ý¼º: - ¼ÆäÀ̽º(Surfaces)
¿¡¼ »ç¸éüÀÇ(Tetrahedral) ±×¸®µå »ý¼º. - Volumetric À¯ÇÑ ¿ä¼Ò (Finite element) ±×¸®µå. * FEA/CFD ºÐ¼® ¹× ½Ã¹Ä·¹À̼ÇÀ» À§ÇÑ »çÀüÀÛ¾÷À¸·Î À¯ÇÑ¿ä¼Ò
±×¸®µå »ý¼º. n 3D ½ºÄ³³Ê µ¥ÀÌÅÍ °°Àº
Æ÷ÀÎÆ® ¼Â¿¡¼ 3D ¼ÆäÀ̽º(Surfaces) »ý¼º: - ÀÓÀÇÀÇ 3D Á¡ÀÇ ÁýÇÕÀ¸·Î ÀÌ·ç¾îÁø µ¥ÀÌÅÍ Ã³¸®. n 3D À̹ÌÁö¿¡¼ Á߽ɼ± °ø°£ ±×·¡ÇÁ (Center line spatial graphs) »ý¼º. |
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n 3D ¼ÆäÀ̽º À籸¼º (Surface Reconstruction): - ½Å·ÚÀûÀÎ ¾Ë°í¸®Áò, ÀÌÁß ¾ÈÀüÀåÄ¡(Fail-safe) ¹× ¼ÆäÀ̽º »ý¼ºÀ» ºü¸£°Ô ¼öÇàÇϱâ À§ÇÑ Çõ½ÅÀûÀÎ °¡¼Ó ±â¼ú Àû¿ë: * ºÐÇÒ µÈ(Segmented) À̹ÌÁö¿¡¼ Çõ½ÅÀûÀÎ À籸¼º ¾Ë°í¸®ÁòÀ¸·Î
½±°Ô »ý¼º, ¶Ç´Â ¸í½ÃµÈ Threshold °ª¿¡¼ iso-surface »ý¼º. - SurfaceGen ¸ðµâ. - SurfaceView ¸ðµâ. n
¼ÆäÀ̽º °£·«È(Simplification): - ÇÏÀ§ ±âÁ¾ ¹× À¥¿¡¼µµ »ç¿ë ÇÒ ¼ö ÀÖµµ·Ï, ¼ÆäÀ̽º ¸ðµ¨ÀÇ Ç°Áú ÀúÇÏ ¾øÀÌ Æ®¶óÀÌ¾Þ±Û ¼ö¸¦ Ãà¼Ò. - ´ë¿ë·® Æú¸®°ï µ¥ÀÌÅ͸¦ ½Ç½Ã°£À¸·Î ó¸® Çϱâ À§ÇØ ¿øÇüÀ» ÈѼÕÇÏÁö ¾Ê°í Æú¸®°ïÀÇ ¼ö¸¦ ÁÙÀ̱â À§ÇÑ, À§»óÀû Á¤È®µµ À¯Áö ¹× Self-intersection ¹æÁö¸¦ À§ÇÑ ÃÖ½ÅÀÇ Á¤±³ÇÑ ¾Ë°í¸®Áò Àû¿ë: * Edge-collapsing ¾Ë°í¸®Áò, ¿øº» ¼ÆäÀ̽ºÀÇ ¸ð¼¸®(Edge)µéÀÇ Á¡(Point)¸¦ ¿¬¼ÓÀûÀ¸·Î Á¦°Å. * ¼ÆäÀ̽º ¿¡µðÅ͸¦
»ç¿ëÇÏ¿© Ãà¼ÒµÈ ¼ÆäÀ̽ºÀÇ Æ®¶óÀÌ¾Þ±Û °Ë»ç ¹× ó¸®. n
¼ÆäÀ̽º ¿¡µðÅÍ: - ¼ÆäÀ̽ºÀÇ °áÁ¡ °Ë»ç, Æ®¶óÀÌ¾Þ±Û ¹× ¹öÅØ½º(Vertex)
Á¶ÀÛ. - °³º°ÀûÀÎ Æ®¶óÀ̾ޱÛÀÇ °æ°è Á¤ÀÇ(Boundary definition). |
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3D Meshing: n
´Ù¾çÇÑ ½Ã¹Ä·¹ÀÌ¼Ç Àû¿ëÀ» À§ÇÑ »çÀüÀÛ¾÷(Pre-processing), Á¤·®È(Quantification) ¹× °¡½Ãȸ¦ À§ÇØ ¸¹Àº °³¼öÀÇ »ç¸éüÀÇ(Tetrahedral) ±×¸®µå »ý¼º: - °í±Þ ¾Ë°í¸®Áò Àû¿ë ¹× °í ǰÁúÀÇ ¸Þ½¬ Á¦¾î. - Ç¥ÁØ ½Ã¹Ä·¹ÀÌ¼Ç ÆÐŰÁö¿¡ ÀͽºÆ÷Æ®(Export). - »ç¿ëÀÚ´Â °æ°èÁ¶°Ç(Boundary Condition)À» Á¤ÀÇ °¡´É. n
À¯ÇÑ¿ä¼Ò ½Ã¹Ä·¹À̼ÇÀ» À§ÇÑ ±×¸®µå »ý¼º: - FEA/CFD ºÐ¼® ¹× ½Ã¹Ä·¹À̼ÇÀ» À§ÇÑ »çÀüÀÛ¾÷À¸·Î À¯ÇÑ¿ä¼Ò
±×¸®µå »ý¼º. - ¼ÆäÀ̽º(Surfaces)
¿¡¼ »ç¸éüÀÇ(Tetrahedral) ±×¸®µå »ý¼º. |
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Open Inventor & Avizo´Â VSG»çÀÇ µî·Ï»óǰÀ̸ç, PHANTOM, OpenHapticsÀº SensAble
Technologies»çÀÇ µî·Ï»óÇ¥À̸ç, (ÁÖ)¾²¸®µð ÀÎÅÍÆäÀ̽º´Â VSG »çÀÇ Á¦Ç° ±º ¹× PHANTOM Á¦Ç° ±ºÀ»
±¹³» µ¶Á¡ °ø±ÞÇÕ´Ï´Ù Omega & Delta ¹× Sigma´Â
ForceDimension »çÀÇ µî·Ï»óÇ¥À̸ç, ForceDimension, SenseGraphics ¹× Novint »çÀÇ
»ó±â Á¦Ç° ±ºÀÇ °ø½Ä Çѱ¹ ´ë¸®Á¡ ÀÔ´Ï´Ù.
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