Importance Sampling ¶ó°í µé¾îº¸¼Ì³ª¿ä? ÀμâÇϱâ
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Did You Know?

Importance Sampling

TracePro¿¡´Â ¸Å¿ì °­·ÂÇÑ Á߿䵵 »ùÇøµ(Importance Sampling) ±â´ÉÀ» Á¦°øÇÑ´Ù´Â »ç½ÇÀ» ¾Ë°í °è¼Ì³ª¿ä? Á߿䵵 »ùÇøµÀº À¯ÃⱤ ºÐ¼® ¹× ´Ù¾çÇÑ ±¤ÇÐ ¼³°è¿Í ºÐ¼® ¹®Á¦¸¦ ÇØ°áÇÏ´Â µ¥ ¸Å¿ì À¯¿ëÇÑ µµ±¸ÀÔ´Ï´Ù. 

¿¹¸¦ µé¾î, ¸Á¿ø°æ¿¡ µé¾î¿À´Â Ãà ¿ÜºÎ ºûÀÌ ³»ºÎ Ç¥¸é¿¡ »ê¶õµÇ¾î °ËÃâ±â·Î ÇâÇÏ´Â °æ¿ì¸¦ µé ¼ö ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ À¯ÃⱤÀº ¼º´É ÀúÇÏ ¹× À̹ÌÁö ǰÁú ÀúÇϸ¦ ÃÊ·¡ÇÒ ¼ö ÀÖ½À´Ï´Ù.
ÀϹÝÀûÀÎ ±¤¼± ÃßÀû ¹æ¹ý¿¡¼­´Â »ê¶õµÈ ºû°ú °°Àº ³·Àº È®·üÀÇ °æ·Î°¡ ÃæºÐÈ÷ »ùÇøµµÇÁö ¾Ê¾Æ È¿À²ÀûÀ¸·Î Á¤È®ÇÑ °á°ú¸¦ ¾ò±â ¾î·Á¿ï ¼ö ÀÖ½À´Ï´Ù. 

Á߿䵵 »ùÇøµÀº »ç¿ëÀÚ°¡ ±¤¼±ÀÌ ÆíÇâµÇ°Å³ª »ùÇøµµÉ ¸ñÇ¥¸¦ Á¤ÀÇÇÏ¿© »ùÇøµÀ» °³¼±ÇÒ ¼ö ÀÖµµ·Ï µµ¿ÍÁÝ´Ï´Ù. Á߿䵵 »ùÇøµÀÇ ÇÙ½É Æ¯Â¡Àº Á¤È®ÇÑ Ç÷°½º°¡ À¯ÁöµÈ´Ù´Â Á¡ÀÔ´Ï´Ù. µû¶ó¼­ ´õ ¸¹Àº ±¤¼±ÀÌ ¸ñÇ¥¿¡ µµ´ÞÇÏ´õ¶óµµ °á°ú´Â ¿©ÀüÈ÷ Á¤È®ÇÏ¸ç ½Å·ÚÇÒ ¼ö ÀÖ½À´Ï´Ù. Á߿䵵 »ùÇøµÀº ´Ü¼øÈ÷ ÃßÀûÇÒ ±¤¼± ¼ö¸¦ ´Ã¸®´Â °Íº¸´Ù ÈξÀ È¿À²ÀûÀ̾ ÀÛ¾÷À» ´õ È¿À²ÀûÀ̰í Á¤È®ÇÏ°Ô ¼öÇàÇÒ ¼ö ÀÖ½À´Ï´Ù.

Á߿䵵 »ùÇøµÀº ½Ã°£°ú ºñ¿ëÀ» Àý¾àÇÒ ¼ö ÀÖÀ¸¸ç, TraceProÀÇ Standard ¹× Expert ¿¡µð¼Ç¿¡¼­ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù.

See It In Action

Did You Know? Importance Sampling

Did You Know? - Importance Sampling

Importance_Sampling,_1

Figure 1: 100k rays started, no Importance Sampling

Importance_Sampling,_2

Figure 2: 100k rays started, no Importance Sampling, 110 rays get to detector

Importance_Sampling,_3

Figure 3: 100k rays started, with Importance Sampling

Importance_Sampling,_4

Figure 4: 100k rays started, with Importance Sampling, >67k rays get to detector

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