Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (J. of the Korea Inst. of Information&Communication Engineering)
ÇѱÛÁ¦¸ñ(Korean Title) |
µðÁöÅРȦ·Î±×·¥ÀÇ È¿À²ÀûÀÎ ºÐÇØ¸¦ À§ÇÑ ¿þÀÌºí¸´ ÇÔ¼ö ±â¹Ý ÇÁ·¹³Ú¸´ º¯È¯ÀÇ ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
Design of Fresnelet Transform based on Wavelet function for Efficient Analysis of Digital Hologram |
ÀúÀÚ(Author) |
¼¿µÈ£
±èÁø°â
±èµ¿¿í
Young-Ho Seo
Jin-Kyum Kim
Dong-Wook Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 03 PP. 0291 ~ 0298 (2019. 03) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â µðÁöÅРȦ·Î±×·¥À» È¿À²ÀûÀ¸·Î ºÐÇØÇϱâ À§Çؼ ´Ù¾çÇÑ ¿þÀÌºí¸´ ÇÔ¼öµéÀ» ÀÌ¿ëÇÑ ÇÁ·¹³Ú¸´ º¯È¯¹æ½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈÇÑ ¿þÀÌºí¸´ ÇÔ¼ö ±â¹ÝÀÇ ÇÁ·¹³Ú¸´ º¯È¯µéÀ» ±¸ÇöÇÑ ÈÄ¿¡ µðÁöÅРȦ·Î±×·¥¿¡ Àû¿ëÇÏ°í °è¼öµéÀÇ ¿¡³ÊÁö¿¡ ´ëÇÑ Æ¯¼ºÀ» ºÐ¼®ÇÑ´Ù. ±¸ÇöÇÑ ¿þÀÌºí¸´ ÇÔ¼ö ±â¹ÝÀÇ ÇÁ·¹³Ú¸´ º¯È¯Àº ±¤ÇÐÀûÀ¸·Î ȹµæµÇ°Å³ª ȤÀº ÄÄÇ»ÅÍ »ý¼º Ȧ·Î±×·¥ ±â¹ýÀ¸·Î »ý¼ºµÈ Ȧ·Î±×·¥ÀÇ º¹¿ø°ú 󸮿¡ ¸Å¿ì ÀûÇÕÇÏ´Ù. ½ºÇöóÀÎ ÇÔ¼öÀÇ Æ¯¼ºÀ» ºÐ¼®ÇÑ ÀÌÈÄ¿¡ À̸¦ ±â¹ÝÀ¸·Î ÇÏ´Â ¿þÀÌºí¸´ ´ÙÇØ»óµµ ÇØ¼® ¹æ¹ý¿¡ ´ëÇØ¼ »ìÆìº»´Ù. ÀÌ·¯ÇÑ °úÁ¤À» ÅëÇØ ±¤ÇÐÀû °£¼· Çö»óÀ» ÅëÇØ »ý¼ºµÈ ÇÁ¸°Áö ÆÐÅÏÀ» È¿°úÀûÀ¸·Î ºÐÇØÇÒ ¼ö ÀÖ´Â º¯È¯ µµ±¸¸¦ Á¦¾ÈÇÏ¿´´Ù. ´Ù¾çÇÑ ºÐÇØ Ư¼ºÀ» °®´Â ¿þÀÌºí¸´ ÇÔ¼ö±â¹ÝÀÇ ÇÁ·¹³Ú¸´ º¯È¯À» ±¸ÇöÇÏ¿´°í À̸¦ ÀÌ¿ëÇÏ¿© ÇÁ¸°Áö ÆÐÅÏÀ» ºÐÇØÇÑ °á°úµéÀ» º¸ÀδÙ. °á°ú¸¦ »ìÆìº¸¸é ·£´ý À§»óÀÇ Æ÷ÇÔ¿©ºÎ¿¡ µû¶ó °è¼öµéÀÇ ¿¡³ÊÁö ºÐÆ÷°¡ Å©°Ô ´Ù¸£´Ù´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, we propose a Fresnel transform method using various wavelet functions to efficiently decompose digital holograms. After implementing the proposed wavelet function-based Fresnelet transforms, we apply it to the digital hologram and analyze the energy characteristics of the coefficients. The implemented wavelet transform-based Fresnelet transform is well suited for reconstructing and processing holograms which are optically obtained or generated by computer-generated hologram technique. After analyzing the characteristics of the spline function, we discuss wavelet multiresolution analysis method based on it. Through this process, we proposed a transform tool that can effectively decompose fringe patterns generated by optical interference phenomena. We implement Fresnelet transform based on wavelet function with various decomposition properties and show the results of decomposing fringe pattern using it. The results show that the energy distribution of the coefficients is significantly different depending on whether the random phase is included or not.
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Ű¿öµå(Keyword) |
ÇÁ·¹³Ú¸´
¿þÀÌºí¸´
ÇÁ·¹³Ú
µðÁöÅРȦ·Î±×·¥
½Åȣó¸®
Fresnelet transform
wavelet transform
fresnel diffraction
digital hologram
signal process
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