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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹ÀÎÅͳÝÁ¤º¸ÇÐȸ ³í¹®Áö

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Current Result Document : 10 / 128 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ºí·Ï ÀûÀÀÀûÀÎ Context Tree WeightingÀ» ÀÌ¿ëÇÑ ¹«¼Õ½Ç ¿µ»ó ¾ÐÃà
¿µ¹®Á¦¸ñ(English Title) Lossless Image Compression Using Block-Adaptive Context Tree Weighting
ÀúÀÚ(Author) ¿ÀÀºÁÖ   Á¶ÇöÁö   À¯ÈÆ   Eun-ju Oh   Hyun-ji Cho   Hoon Yoo  
¿ø¹®¼ö·Ïó(Citation) VOL 21 NO. 04 PP. 0043 ~ 0049 (2020. 08)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®Àº ÀÔ·Â ¿µ»ó µ¥ÀÌÅ͸¦ ºí·Ï ÀûÀÀÀûÀ¸·Î Context Tree WeightingÀ» »ç¿ëÇÏ¿© »ê¼ú ºÎÈ£ ±â¹ÝÀÇ ¹«¼Õ½Ç ¿µ»ó ¾ÐÃà ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. CTW ±â¹ýÀº ÀÔ·Â µ¥ÀÌÅ͸¦ ºñÆ® ´ÜÀ§·Î ¿¹Ãø ¹× ¾ÐÃàÀ» Çϴ Ư¼ºÀ» °¡Áø´Ù. ¶ÇÇÑ, CTW ±â¹ýÀº ¹ÌÁöÀÇ ¸ðµ¨ ¹× ÆĶó¹ÌÅÍ¿¡ ´ëÇؼ­µµ È¿À²ÀûÀÎ ¾ÐÃàÀ» ÇÑ´Ù´Â Á¡¿¡¼­ ÀåÁ¡À» º¸¿©ÁØ´Ù. º» ¿¬±¸¿¡¼­´Â ¹«¼Õ½Ç ¾ÐÃàÀÌ ÇÊ¿äÇÑ Ç×°ø ¹× À§¼º »çÁøÀ» ¿É¼Ç Á¤º¸¿¡ µû¶ó ºÐÇÒÇÑ ´ÙÀ½ °¢°¢ CTW ±â¹ÝÀÇ »ê¼ú ºÎÈ£±â¸¦ Àû¿ëÇÏ¿© ¾ÐÃàÀÇ È¿À²À» Áõ´ëÇÏ°íÀÚ ÇÑ´Ù. Ç×°ø ¹× À§¼º »çÁøÀº ¿µ»ó ³» Á¤º¸ÀÇ °¡Ä¡°¡ ³ôÀ¸¹Ç·Î ¹«¼Õ½Ç ¾ÐÃàÀÌ ºÒ°¡ÇÇÇÏ´Ù. ¶ÇÇÑ, ¿µ»ó Å©±â°¡ ÀϹÝÀûÀÎ ¿µ»ó¿¡ ºñÇØ Å©±â ¶§¹®¿¡ °í¾ÐÃà ¿ª½Ã ÇÊ¿äÇÏ´Ù. ±âÁ¸ÀÇ ¹«¼Õ½Ç ¾ÐÃà ±â¹ýÀ¸·Î´Â ´ë¿ë·®ÀÇ Áß¿ä ¿µ»óÀ» ¾ÐÃàÇÏ´Â µ¥¿¡ ¾î·Á¿òÀÌ Á¸ÀçÇÑ´Ù. ÀÌ·¯ÇÑ ÀÌÀ¯·Î, º» ³í¹®¿¡¼­´Â ºÐÇÒÇÏÁö ¾ÊÀº ¿µ»óÀ» ¾ÐÃàÇÒ ¶§ º¸´Ù Á¦¾ÈÇÏ´Â ¹æ¹ýÀ» ÅëÇØ ¿µ»óÀ» ¾ÐÃàÇßÀ» ¶§ ´õ ³ôÀº ¾ÐÃà·üÀ» º¸¿©ÁÖ±â À§ÇÑ ½ÇÇèÀ» Á¦°øÇÑ´Ù. ½ÇÇèÀ» ÅëÇØ ±âÁ¸ÀÇ ¹«¼Õ½Ç ¾ÐÃà ±â¹ýÀ» »ç¿ëÇÏ¿© ¾ÐÃàÀ» ÁøÇàÇßÀ» ¶§ º¸´Ù CTW ±â¹ýÀ» ÀÌ¿ëÇÏ¿© ºÐÇÒÇÑ ¿µ»óÀ» ¾ÐÃàÇßÀ» ¶§ÀÇ ¾ÐÃà·üÀÌ ´õ ³ôÀ½À» È®ÀÎÇÒ ¼ö ÀÖ´Ù.
¿µ¹®³»¿ë
(English Abstract)
This paper proposes a lossless image compression method based on arithmetic coding using block-adaptive Context Tree Weighting. The CTW method predicts and compresses the input data bit by bit. Also, it can achieve a desirable coding distribution for tree sources with an unknown model and unknown parameters. This paper suggests the method to enhance the compression rate about image data, especially aerial and satellite images that require lossless compression. The value of aerial and satellite images is significant. Also, the size of their images is huger than common images. But, existed methods have difficulties to compress these data. For these reasons, this paper shows the experiment to prove a higher compression rate when using the CTW method with divided images than when using the same method with non-divided images. The experimental results indicate that the proposed method is more effective when compressing the divided images.
Å°¿öµå(Keyword) ¿µ»ó ¾ÐÃà   ºí·Ï ÀûÀÀ   ¹«¼Õ½Ç ¾ÐÃà   ¿µ»ó 󸮠  image compression   block-adaptive   lossless data compression   CTW   image processing  
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