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ÇѱÛÁ¦¸ñ(Korean Title) Ç×·ÎÇ¥Áö º¸È£¸¦ À§ÇÑ µðÁöÅÐ ¿µ»ó±â¹Ý Çع« °­µµ ÃøÁ¤ ¾Ë°í¸®Áò
¿µ¹®Á¦¸ñ(English Title) Sea Fog Level Estimation based on Maritime Digital Image for Protection of Aids to Navigation
ÀúÀÚ(Author) À¯ÀºÁö   ÀÌÈ¿Âù   Á¶¼ºÀ±   ±Ç±â¿ø   ÀÓÅÂÈ£   Eun-Ji Ryu   Hyo-Chan Lee   Sung-Yoon Cho   Ki-Won Kwon   Tae-Ho Im  
¿ø¹®¼ö·Ïó(Citation) VOL 22 NO. 06 PP. 0025 ~ 0032 (2021. 12)
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(Korean Abstract)
¹Ì·¡ ÇØ»ó ȯ°æ º¯È­¿¡ ¸ÂÃç ÇØ»ó Ç×·ÎÇ¥Áö°¡ ´Ù¾çÇÑ ºÐ¾ß¿¡ °ÉÃÄ È°¿ëµÇ¸ç ¾²ÀÓÀÌ Áõ´ëµÇ°í ÀÖ´Ù. ÇØ»ó Ç×·ÎÇ¥Áö´Â Ç×ÇàÇÏ´Â ¼±¹ÚÀÇ À§Ä¡, ¹æÇâ ¹× Àå¾Ö¹°ÀÇ À§Ä¡¸¦ ¾Ë·ÁÁÖ´Â Ç×ÇຸÁ¶½Ã¼³·Î, ÇöÀç´Â ´Ü¼øÈ÷ ¼±¹ÚÀÇ ¾ÈÀü Ç×Çظ¦ µµ¿ï »Ó ¾Æ´Ï¶ó, ¿©·¯ ¼¾¼­¿Í Ä«¸Þ¶ó¸¦ žÀçÇÏ¿© ÇØ¾ç ±â»óȯ°æÀ» ÆľÇÇÏ°í ±â·ÏÇÏ´Â ¼ö´ÜÀ¸·Î º¯¸ðÇÏ°í ÀÖ´Ù. ÇÏÁö¸¸ ÁÖ·Î ¼±¹Ú°úÀÇ Ãæµ¹·Î ÀÎÇØ ¼Ò½ÇµÇ¸ç ƯÈ÷ Çع«·Î ÀÎÇÑ °üÃø ½Ã¾ß ÀúÇÏ·Î ¾ÈÀü»ç°í°¡ ¹ß»ýÇÑ´Ù. Çع« À¯ÀÔÀº Ç׸¸, ÇØ»ó±³Åë µî¿¡ À§ÇèÀ» ÃÊ·¡ÇÏ°í ½Ã°£°ú Áö¿ª¿¡ µû¶ó ¹ß»ý °¡´É¼ºÀÇ Â÷ÀÌ°¡ Ä¿ ¿¹ÃøÀÌ ½±Áö ¾Ê´Ù. ¶ÇÇÑ, Àü ÇØ¿ª¿¡ ºÐÆ÷µÇ¾îÀÖ´Â Ç×·ÎÇ¥ÁöÀÇ Æ¯¼º»ó °³º° °ü¸®°¡ ¾î·Æ´Ù. À̸¦ ÇØ°áÇÏ°íÀÚ º» ³í¹®¿¡¼­´Â Ç×·ÎÇ¥Áö¿¡ ¼³Ä¡µÈ Ä«¸Þ¶ó¿¡¼­ ÃÔ¿µÇÑ ¿µ»óÀ¸·Î Çع« °­µµ¸¦ ÃøÁ¤ÇÏ´Â ¹æ¾ÈÀ» ÅëÇÏ¿© ÇØ¾ç ±â»óȯ°æÀ» ÆľÇÇØ º¸¿ÏÇÏ°í ³¯¾¾·Î ÀÎÇÑ Ç×·ÎÇ¥Áö ¾ÈÀü»ç°í¸¦ ÇØ°áÇÏ´Â °ÍÀ» ¸ñÀûÀ¸·Î ÇÑ´Ù. ¼³Ä¡°¡ ¾î·Æ°í ³ôÀº ºñ¿ëÀÌ µå´Â ±¤ÇÐ ¹× ¿Âµµ ¼¾¼­ ´ë½Å Ç×·ÎÇ¥Áö¿¡ ¼³Ä¡µÈ Ä«¸Þ¶óÀÇ ÀÏ¹Ý ¿µ»óÀ» »ç¿ëÇÏ¿© Çع« °­µµ¸¦ ÃøÁ¤ÇÑ´Ù. µ¡ºÙ¿© ´Ù¾çÇÑ ÇØ¿ª¿¡¼­ÀÇ ½Ç½Ã°£ Çع« ÆľÇÀ» À§ÇÑ ¼±Çà ¿¬±¸·Î, ¾È°³ ¸ðµ¨(Haze Model), Dark Channel Prior(DCP)¸¦ ÀÌ¿ëÇØ Çع« °­µµ ÃøÁ¤ ±âÁØÀ» Á¦½ÃÇÑ´Ù. DCP¸¦ Àû¿ëÇÑ ¿µ»ó¿¡¼­ ƯÁ¤ Çȼ¿°ªÀÇ ¹®Åΰª(Threshold value)À» ¼³Á¤ÇÏ°í, À̸¦ ±âÁØÀ¸·Î Àüü ¿µ»ó¿¡¼­ Çع«°¡ Á¸ÀçÇÏÁö ¾Ê´Â Çȼ¿ÀÇ ¼ö¸¦ ÅëÇØ Çع« °­µµ¸¦ ÃßÁ¤ÇÑ´Ù. ÇÕ¼º Çع« µ¥ÀÌÅͼ°ú ½ÇÁ¦ Çع« µ¿¿µ»óÀ» ĸóÇØ ¸¸µç ½ÇÁ¦ Çع« µ¥ÀÌÅͼÂÀ¸·Î Çع« °­µµ ÃøÁ¤ ¿©ºÎ¸¦ °ËÁõÇß´Ù.
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(English Abstract)
In line with future changes in the marine environment, Aids to Navigation has been used in various fields and their use is increasing. The term ¡°Aids to Navigation¡± means an aid to navigation prescribed by Ordinance of the Ministry of Oceans and Fisheries which shows navigating ships the position and direction of the ships, position of obstacles, etc. through lights, shapes, colors, sound, radio waves, etc. Also now the use of Aids to Navigation is transforming into a means of identifying and recording the marine weather environment by mounting various sensors and cameras. However, Aids to Navigation are mainly lost due to collisions with ships, and in particular, safety accidents occur because of poor observation visibility due to sea fog. The inflow of sea fog poses risks to ports and sea transportation, and it is not easy to predict sea fog because of the large difference in the possibility of occurrence depending on time and region. In addition, it is difficult to manage individually due to the features of Aids to Navigation distributed throughout the sea. To solve this problem, this paper aims to identify the marine weather environment by estimating sea fog level approximately with images taken by cameras mounted on Aids to Navigation and to resolve safety accidents caused by weather. Instead of optical and temperature sensors that are difficult to install and expensive to measure sea fog level, sea fog level is measured through the use of general images of cameras mounted on Aids to Navigation. Furthermore, as a prior study for real-time sea fog level estimation in various seas, the sea fog level criteria are presented using the Haze Model and Dark Channel Prior. A specific threshold value is set in the image through Dark Channel Prior(DCP), and based on this, the number of pixels without sea fog is found in the entire image to estimate the sea fog lvel. Experimental results demonstrate the possibility of estimating the sea fog level using synthetic haze image dataset and real haze image dataset.
Å°¿öµå(Keyword) Ç×·ÎÇ¥Áö   ¾ÈÀü»ç°í ¿¹¹æ   Çع« °­µµ   °­µµ ¿¹Ãø   ¿µ»ó󸮠  Aids to Navigation   buoy   prevention of safety accidents   Haze(Fog) level   intensity estimation   image processing  
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