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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ¼ÒÇÁÆ®¿þ¾î ¹× µ¥ÀÌÅÍ °øÇÐ

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¸ð¹ÙÀÏ È¯°æÀ» À§ÇØ ¿¡Áö¸Ê º¸°£°ú °³¼±µÈ °í¼Ó Back Projection ±â¹ýÀ» ÀÌ¿ëÇÑ Super Resolution ¾Ë°í¸®Áò
¿µ¹®Á¦¸ñ(English Title) Super Resolution Algorithm Based on Edge Map Interpolation and Improved Fast Back Projection Method in Mobile Devices
ÀúÀÚ(Author) À̵ÎÈñ   ¹Ú´ëÇö   ±èÀ±   Doo-Hee Lee   Dae-Hyun Park   Yoon Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 01 NO. 02 PP. 0103 ~ 0108 (2012. 11)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù °í¼º´É ¸ð¹ÙÀϱâ±âÀÇ º¸±Þ°ú ¸ÖƼ¹Ìµð¾î ÄÜÅÙÃ÷ÀÇ È°¿ëÀÌ Ä¿Áü¿¡ µû¶ó ÀúÇØ»óµµ ¿µ»óÀ» °íÇػ󵵷ΠÀ籸¼ºÇÏ´Â ÃÊÇØ»óµµ(super resolution) ±â¹ýÀÌ Áß¿äÇÏ°Ô ´ëµÎµÇ°í ÀÖ´Ù. ¸ð¹ÙÀϱâ±â¿¡¼­´Â ÃÊÇػ󵵸¦ »ç¿ëÇϱâ À§Çؼ­´Â ¿¬»ê·®°ú ¸Þ¸ð¸® µîÀÇ Á¦ÇÑÀûÀÎ ÀÚ¿øÀÇ »ç¿ëÀ» °í·ÁÇÑ ÃÊÇØ»óµµ ¾Ë°í¸®ÁòÀÌ ¿ä±¸µÈ´Ù. º» ³í¹®¿¡¼­´Â ¸ð¹ÙÀϱâ±â¿¡ Àû¿ëÇϱâ À§ÇØ ´ÜÀÏ¿µ»óÀ» ÅëÇÑ ºü¸¥ ÃÊÇØ»óµµ ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀº »öä ¿Ö°îÀ» ¹æÁöÇϱâ À§ÇØ RGB Ä÷¯ µµ¸ÞÀο¡¼­ HSV Ä÷¯ µµ¸ÞÀÎÀ¸·Î º¯°æÇÏ¿© Àΰ£ÀÇ ½Ã°¢ÀÎÁö Ư¼ºÀÌ °¡Àå ¶Ñ·ÇÇÑ ¹à±âÁ¤º¸ÀÎ V¸¸ ó¸®ÇÑ´Ù. ¸ÕÀú ÀâÀ½Á¦°Å ¹× ¼ÓµµÇâ»óÀ» °í·ÁÇÏ¿© °³¼±µÈ °í¼Ó back projection¿¡ ÀÇÇØ ¿µ»óÀ» È®´ë À籸¼ºÇÑ´Ù. ÀÌ¿Í ÇÔ²² 2Â÷ ¹ÌºÐÀ» »ç¿ëÇÏ´Â LoG (laplacian of gaussian) ÇÊÅ͸µÀ» ÀÌ¿ëÇÏ¿© ½Å·ÚÇÒ ¼ö ÀÖ´Â ¿¡Áö ¸ÊÀ» ÃßÃâÇÑ´Ù. ÃÖÁ¾ÀûÀ¸·Î ¿¡Áö Á¤º¸¿Í °³¼±µÈ back projection °á°ú¸¦ ÀÌ¿ëÇÏ¿© °íÇØ»óµµ ¿µ»óÀ» À籸¼ºÇÑ´Ù. Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀ» »ç¿ëÇÏ¿© º¹¿øÇÑ ¿µ»óÀº ºÎÀÚ¿¬½º·¯¿î Àΰø¹°À» È¿°úÀûÀ¸·Î Á¦°ÅÇÏ°í, blurÇö»óÀ» ÃÖ¼ÒÈ­ÇÏ¿© ¿¡Áö Á¤º¸¸¦ º¸Á¤ÇÏ°í °­Á¶ÇØÁØ´Ù. ½ÇÇè°á°ú¸¦ ÅëÇØ Á¦¾ÈÇÏ´Â ¾Ë°í¸®ÁòÀÌ ±âÁ¸ÀÇ º¸°£¹ýÀ̳ª ÀüÅëÀûÀÎ back projection °á°úº¸´Ù ÁÖ°üÀûÀÎ È­ÁúÀÌ ¿ì¼öÇÏ°í, °´°üÀûÀ¸·Î ¿ì¼öÇÑ ¼º´ÉÀ» ³ªÅ¸³¿À» ÀÔÁõÇÑ´Ù.
¿µ¹®³»¿ë
(English Abstract)
Recently, as the prevalence of high-performance mobile devices and the application of the multimedia content are expanded, Super Resolution (SR) technique which reconstructs low resolution images to high resolution images is becoming important. And in the mobile devices, the development of the SR algorithm considering the operation quantity or memory is required because of using the restricted resources. In this paper, we propose a new single frame fast SR technique suitable for mobile devices. In order to prevent color distortion, we change RGB color domain to HSV color domain and process the brightness information V (Value) considering the characteristics of human visual perception. First, the low resolution image is enlarged by the improved fast back projection considering the noise elimination. And at the same time, the reliable edge map is extracted by using the LoG (Laplacian of Gaussian) filtering. Finally, the high definition picture is reconstructed by using the edge information and the improved back projection result. The proposed technique removes effectually the unnatural artefact which is generated during the super resolution restoration, and the edge information which can be lost is amended and emphasized. The experimental results indicate that the proposed algorithm provides better performance than conventional back projection and interpolation methods.
Å°¿öµå(Keyword) ÃÊÇػ󵵠  ¿ªÅõ¿µ   ¿µ»ó È®´ë   Super Resolution   Back Projection   Image Magnification  
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