Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
ÇѱÛÁ¦¸ñ(Korean Title) |
ÇÁ·¹³Ú¸´ ±â¹ÝÀÇ µðÁöÅРȦ·Î±×·¥ ºÎȣȸ¦ À§ÇÑ ÄõµåÆ®¸® ºÎ´ë¿ª ¾çÀÚȱ⠼³°è |
¿µ¹®Á¦¸ñ(English Title) |
Quad-tree Subband Quantizer Design for Digital Hologram Encoding based on Fresenelet |
ÀúÀÚ(Author) |
¼¿µÈ£
±è¹®¼®
±èµ¿¿í
Young-Ho Seo
Moon Seok Kim
Dong-Wook Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 19 NO. 05 PP. 1180 ~ 1188 (2015. 05) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ÇÁ·¹³Ú¸´ º¯È¯À» ÀÌ¿ëÇÏ¿© µðÁöÅРȦ·Î±×·¥À» ¾ÐÃàÇÒ °æ¿ì¿¡ »ç¿ëµÉ ¼ö ÀÖ´Â ÄõµåÆ®¸® ÇüÅÂÀÇ ºÎ´ë¿ª ¾çÀÚȱ⸦ Á¦¾ÈÇÑ´Ù. ȹµæµÈ µðÁöÅРȦ·Î±×·¥¿¡ ´ëÇؼ ÇÁ·¹³Ú¸´ º¯È¯À» ¼öÇàÇÑ ÈÄ¿¡ °¢ ºÎ´ë¿ªº°·Î ȼҴç Æò±Õ ¿¡³ÊÁö¿Í ºÎ´ë¿ªÀÇ ½Ã°¢ÀûÀÎ Áß¿äµµ¸¦ ºÐ¼®ÇÏ¿© ºÎ´ë¿ªÀÌ º¹¿ø ¿µ»ó¿¡ ºñÄ¡´Â ¿µ»óÀ» ºÐ¼®ÇÏ¿´´Ù. °¢ ºÎ´ë¿ªº°·Î °è¼öµéÀÇ ºÐÆ÷¸¦ ºÐ¼®ÇÏ¿© ´ÙÀ̳ª¹Í ¿µ¿ªÀ» Á¤ÇÏ°í, ºÎ´ë¿ª ¾çÀÚȱ⸦ ¼³°èÇÏ¿´´Ù. ¼³°èÇÑ ¾çÀÚȱâÀÇ È¿À²À» ³ôÀ̱â À§Çؼ ´ÙÀ̳ª¹Í ¿µ¿ª ¿ÜÀÇ ¿µ¿ª¿¡ Á¸ÀçÇÏ´Â °è¼ö¸¦ È°¿ëÇÏ´Â ¹æ¹ýÀ» Àû¿ëÇÏ¿´°í, À̸¦ ¿¹¿Ü °è¼ö¶ó ÇÏ¿´´Ù. ±× °á°ú ¥ò¡Ç = 5.0ÀÎ ¹üÀ§¿¡¼ ³ôÀº ¼º´ÉÀ» °¡Áú ¼ö ÀÖ´Â ¾çÀÚȱ⸦ ¼³°èÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, we propose a new subband quantizer which is a type of quad-tree for applying to digital hologram compression based on Fresenelet transform. After executing Fresnelet transform to the captured digital holgoram, we analyze effect of the designed quantizer for the reconstructed objects from analyzing average energy of each coefficient and visual importance in all subbands. We analyze distribution of coefficient and set dynamic range for each subband, and then design subband quantizer. For enhancing effectiveness of the designed quantize, we adopt a method using the coefficients which are located out of dynamic range, which are named by exception indices. From this, we can obtain more effective quantizer which has higher performance in a range of ¥ò¡Ç = 5.0.
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Å°¿öµå(Keyword) |
µðÁöÅРȦ·Î±×·¥
¾ÐÃà
Äõµå-Æ®¸®
ÇÁ·¹³Ú¸´ º¯È¯
Fresnelet transform
quad-tree
subband
digital hologram
encoding
quantizer
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ÆÄÀÏ÷ºÎ |
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