{"id":894,"date":"2009-03-25T13:54:25","date_gmt":"2009-03-25T13:54:25","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=894"},"modified":"2017-01-29T10:09:19","modified_gmt":"2017-01-29T01:09:19","slug":"hillshade-algorithm","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=894","title":{"rendered":"[GIS] \uac1c\ubc1c \ub9f5 \uc5d4\uc9c4\uc758 Slope, Aspect, Hillshade"},"content":{"rendered":"<p>\uc9c0\ud615\uc774\ub77c\ub294 \uc8fc\uc81c\ub85c \uc81c\uc791\ub41c \ub77c\uc2a4\ud130(Raster)\uc758 \uc140(Cell)\uc5d0 \uae30\ubc18\ud55c \ubd84\uc11d \uc911 \uacbd\uc0ac(Slope)\uc640 \ud5a5(Aspect) \ubd84\uc11d\uc740 \uc911\uc694\ud55c \uc790\ub9ac\ub97c \ucc28\uc9c0\ud558\uba70, \uc774 \uacbd\uc0ac\uc640 \ud5a5\uc740 \uc9c0\ud615\uc5d0 \ub300\ud55c \ubd84\uc11d \ubc0f \uc751\uc6a9\uc758 \ud30c\ub77c\uba54\ud130\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uae00\uc740 \uac1c\ubc1c \uc911\uc778 \uc9c0\ub3c4 \uc5d4\uc9c4\uc758 \ud655\uc7a5 \uae30\ub2a5\uc758 \ud558\ub098\ub85c\uc368 \uacbd\uc0ac\uc640 \ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uac83\uacfc \uc774 \uacbd\uc0ac\uc640 \ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ub2a5\uc744 \uc751\uc6a9\ud558\uc5ec \ub2e4\uc2dc \uc9c0\ud615\uc758 \uc74c\uc601\ub3c4(Hillshade)\ub97c \ub9cc\ub4dc\ub294 \ud655\uc7a5 \uae30\ub2a5\uc5d0 \ub300\ud55c \uc18c\uac1c\uc785\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ud655\uc7a5 \uae30\ub2a5\uc774\ub780 \uc9c0\ub3c4 \uc5d4\uc9c4\uacfc\ub294 \ubcc4\uac1c\uc758 \ud30c\uc77c \ub2e8\uc704\ub85c\uc368 \uc5d4\uc9c4\uc5d0 \ud50c\ub7ec\uadf8\uc778\ud558\uc5ec \ubcc4\ub3c4\uc758 \uc2a4\ub808\ub4dc\ub97c \ud1b5\ud574 \uc2e4\ud589\uc2dc\ud0ac \uc218 \uc788\ub294 \uc678\ubd80\uc758 \ud655\uc7a5 \uc2e4\ud589 \ub2e8\uc704 \ubaa8\ub4c8\uc785\ub2c8\ub2e4.<\/p>\n<p>\uacbd\uc0ac\uc640 \ud5a5 \uac12\uc744 \ubd84\uc11d\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubd84\uc11d \ub300\uc0c1\uc774 \ub418\ub294 \uc9c0\uc5ed\uc5d0 \ub300\ud55c DEM \ub370\uc774\ud130\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uc774 DEM\uc758 \ub77c\uc2a4\ud130 \ub370\uc774\ud130\ub85c\uc368 \uc544\ub798\uc640 \uac19\uc740 \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud558\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1128102075.jpg\" alt=\"\uc0ac\uc6a9\uc790 \uc0bd\uc785 \uc774\ubbf8\uc9c0\" width=\"431\" height=\"429\" \/><br \/>\n\uc774 \ub370\uc774\ud130\ub294 \uae40\ud55c\uad6d\ub2d8\uc774 \uc6b4\uc601\ud558\ub294 \ube44\uc9c0\ub2c8\uc2a4 GIS \ucee4\ubba4\ub2c8\ud2f0(<a href=\"http:\/\/www.biz-gis.com\">www.biz-gis.com<\/a>)\uc5d0\uc11c \ub0b4\ub824 \ubc1b\uc740 \ub370\uc774\ud130\uc785\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uc704\uc758 \uc774\ubbf8\uc9c0\ub97c \ud3ec\ud568\ud574\uc11c \uc55e\uc73c\ub85c \ub098\uc624\ub294 \uc9c0\ub3c4 \ud654\uba74\uc740 \ubaa8\ub450 \uc624\ud508\uba54\uc774\ud2b8(<a href=\"http:\/\/www.openmate.co.kr\">www.openmate.co.kr<\/a>)\uc758 \uac1c\ubc1c\ud55c \ub9f5 \uc5d4\uc9c4\uc73c\ub85c \uc0dd\uc131\ud55c \ud654\uba74\uc785\ub2c8\ub2e4. \uc704\uc758 \ub370\uc774\ud130\ub97c \ud1b5\ud574 \uacbd\uc0ac\uac12\uacfc \ud5a5\uc744 \uacc4\uc0b0\ud558\uae30 \uc804\uc5d0 \uac04\ub2e8\ud788 \uacbd\uc0ac\uc640 \ud5a5\uc774 \ubb34\uc5c7\uc778\uc9c0\uc5d0 \ub300\ud574 \uc5b8\uae09\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uacbd\uc0ac(Slope)\ub780 \uc5b4\ub5a4 \uc9c0\uc810\uc758 \uc9c0\ubc18\uc774 \uc218\ud3c9\uc744 \uae30\uc900\uc73c\ub85c \uba87\ub3c4 \uc815\ub3c4 \uae30\uc6b8\uc5b4\uc838 \uc788\ub294\uac00\ub97c \ub9d0\ud558\ub294 \uac83\uc73c\ub85c \ub2e4\uc74c \uadf8\ub9bc\uc744 \ud1b5\ud574 \uc27d\uac8c \uc774\ud574\ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1300932578.jpg\" alt=\"\uc0ac\uc6a9\uc790 \uc0bd\uc785 \uc774\ubbf8\uc9c0\" width=\"248\" height=\"161\" \/><br \/>\n\ubc14\ub85c \uc800 \uc138\ud0c0 \uac01\ub3c4\uac00 \uacbd\uc0ac \uae30\uc6b8\uae30\uc5d0 \ub300\ud55c \uac01\ub3c4\ub85c\uc368 \uac01\uc774 \ud074 \uc218\ub85d \uc9c0\ubc18\uc758 \uacbd\uc0ac\uac00 \uae09\ud558\uace0 \uac01\uc774 0\uc774\uba74 \ud3c9\ud3b8\ud55c \uc9c0\ubc18\uc784\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<p>\ud5a5(Aspect)\uc774\ub780 \uc9c0\ubc18\uc758 \uacbd\uc0ac\uba74\uc774 \uc5b4\ub514\ub97c \ud5a5\ud558\uace0 \uc788\ub294\uc9c0\uc5d0 \ub300\ud55c \uac83\uc785\ub2c8\ub2e4. \ub9cc\uc57d \uc9c0\ubc18\uc758 \uacbd\uc0ac\uba74\uc774 \ubd81\ucabd\uc744 \ud5a5\ud558\uace0 \uc788\ub2e4\uba74 0\ub3c4, \ub3d9\ucabd\uc740 90\ub3c4, \ub0a8\ucabd\uc740 180\ub3c4 \uadf8\ub9ac\uace0 \uc11c\ucabd\uc740 270\ub3c4\uac00 \ub429\ub2c8\ub2e4. \uc644\uc804\ud788 \ud3c9\ud3b8\ud560 \uacbd\uc6b0 GIS \uc2dc\uc2a4\ud15c\ub9c8\ub2e4 \ub2e4\ub978 \uac12\uc744 \uc8fc\uac8c \ub418\ub294\ub370, \uc5ec\uae30\uc11c\ub294 Null \uac12\uc744 \uc90d\ub2c8\ub2e4. (\uc0ac\uc2e4 Null\uc740 \uac12\uc774 \uc5c6\ub2e4\ub294 \uc758\ubbf8\uc774\ubbc0\ub85c, \uc880\ub354 \uc815\ud654\ud558\uac8c \ud55c\ub2e4\uba74 0~360\uc774 \uc544\ub2cc \ub2e4\ub978 \uac12\uc744 \uc8fc\uc5b4\uc57c \uc633\uc2b5\ub2c8\ub2e4. \uc608\ub97c\ub4e4\uc5b4\uc11c -1\uacfc \uac19\uc740 \uac12\uc774 \uc801\ub2f9\ud558\uaca0\uc2b5\ub2c8\ub2e4)<\/p>\n<p>\uc2e4\uc81c\ub85c \uad6c\ud604\ub41c \uacbd\uc0ac\uc640 \ud5a5\uc5d0 \ub300\ud55c \uc2e4\ud589 \uacb0\uacfc\ub294 \uc544\ub798\uc640 \uac19\uc2b5\ub2c8\ub2e4. \uac01\uac01 \uacbd\uc0ac\uc640 \ud5a5\uc5d0 \ub300\ud55c \uc774\ubbf8\uc9c0\uc785\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1179527277.jpg\" alt=\"\uc0ac\uc6a9\uc790 \uc0bd\uc785 \uc774\ubbf8\uc9c0\" width=\"510\" height=\"259\" \/><br \/>\n\uac00\ub9cc\uc774 \ubcf4\uba74 \ud5a5\uc758 \ubd84\uc11d \uacb0\uacfc\uac00 \ubd88\uc644\uc804\ud558\uae30\ub294 \ud558\uc9c0\ub9cc \uc74c\uc601\uae30\ubcf5\ub3c4(Hillshade)\uc640 \ube44\uc2b7\ud574 \ubcf4\uc785\ub2c8\ub2e4. \uc5ec\uae30\uc11c Hillshade\ub294 \ud0dc\uc591\uad11\uc758 \uc704\uce58\ub97c \uc815\ud574\uc8fc\uba74 \ud0dc\uc591\uad11\uc758 \uc601\ud5a5\uc73c\ub85c \uc9c0\ud615 \ub370\uc774\ud130\ub97c \uc785\uccb4\uac10 \uc788\uac8c \ud45c\ud604\ud574 \uc8fc\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4. \uc544\ub798\ub294 \uc774\ub7ec\ud55c \ub0b4\uc6a9\uc73c\ub85c \uac1c\ubc1c\ud55c \ub9f5 \uc5d4\uc9c4\uc5d0 \uad6c\ud604\ub41c Hillshade\uc758 \uacb0\uacfc\uc785\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1243042733.jpg\" alt=\"\uc0ac\uc6a9\uc790 \uc0bd\uc785 \uc774\ubbf8\uc9c0\" width=\"425\" height=\"425\" \/><br \/>\n\ud0dc\uc591\uc758 \uc704\uce58\ub294 \ubd81\ub3d9\ucabd(270)\uc774\uace0 \uace0\ub3c4\ub294 45\ub3c4\ub85c \uc815\ud588\uc2b5\ub2c8\ub2e4. \uc704\uc758 Hillshade\uc758 \uacb0\uacfc\ub294 \ube44\ub85d \uc785\uccb4\uc801\uc73c\ub85c \ubcf4\uc774\uae30\ub294 \ud558\uc9c0\ub9cc \ub9c8\uce58 \uc11d\uace0\ub97c \ubc1c\ub77c \ub193\uc740 \ub4ef\uc774 \ub9e4\uc6b0 \ub531\ub531\ud574 \ubcf4\uc785\ub2c8\ub2e4. \uc774\ub97c \uc880\ub354 \uc608\uc220\uc801(?)\uc73c\ub85c \ud45c\ud604\ud558\uae30 \uc704\ud574 \uc774 \uae00\uc758 \uac00\uc7a5 \ucc98\uc74c \ubcf4\uc5ec\ub4dc\ub838\ub358 \uc9c0\ud615 \ub370\uc774\ud130\uc758 \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc640 \uc704\uc758 Hillshade\ub97c \ud569\uc131\ud558\uac8c \ub418\ub294\ub370, \uc880\ub354 \uba4b\uc9c4 \uc74c\uc601\uae30\ubcf5\ub3c4\ub97c \uc704\ud55c \ud569\uc131 \ubc29\ubc95\uc740 Hillshade\uc744 \uc57d\uac04 \ud22c\uba85\ud558\uac8c \ud558\uace0 Luminosity \ubc29\uc2dd\uc73c\ub85c \ud569\uc131\ud574\uc57c \ud558\ub098, \uac1c\ubc1c\ud55c \ub9f5 \uc5d4\uc9c4\uc5d0\uc11c\ub294 Luminosity \ubc29\uc2dd\uc758 \ud569\uc131\uc744 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc544 \uadf8\ub0e5 \ud22c\uba85\ub3c4\ub9cc \uc8fc\uc5b4 \uc0c8\ub86d\uac8c \uc74c\uc601\uae30\ubcf5\ub3c4\ub97c \ub9cc\ub4e4\uc5b4 \ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uadf8 \uacb0\uacfc\ub294 \uc544\ub798\uc640 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1000787420.jpg\" alt=\"\uc0ac\uc6a9\uc790 \uc0bd\uc785 \uc774\ubbf8\uc9c0\" width=\"426\" height=\"426\" \/><br \/>\n\ubd04 \uacc4\uc808\uc5d0 \ub9de\uac8c \uc0c9\uc0c1\uc744 \ub123\uc5b4 \ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc880\ub354 \uc0c9\uc0c1\uc744 \ub2e4\uccb4\ub86d\uac8c \ub123\ub294\ub2e4\uba74 \ub354 \uba4b\uc9c4 \uc74c\uc601\uae30\ubcf5\ub3c4 \ub9cc\ub4e4\uc5b4 \uc9c8 \uac83\uc73c\ub85c \ud310\ub2e8\ub418\uba70, \uc55e\uc11c \uc5b8\uae09\ud55c Luminosity \ud569\uc131\uc744 \uc0ac\uc6a9\ud558\uba74 \ubcf4\ub2e4 \ubd84\uba85\ud55c \uc74c\uc601\uae30\ubcf5\ub3c4\uac00 \ub9cc\ub4e4\uc5b4 \uc9c8 \uac83 \uc785\ub2c8\ub2e4. \uc774\uc0c1\uc73c\ub85c \uac1c\ubc1c\ud55c \ub9f5 \uc5d4\uc9c4\uc5d0\uc11c \ud655\uc7a5\uae30\ub2a5\uc73c\ub85c \uac1c\ubc1c\ud55c \uacbd\uc0ac, \ud5a5 \uadf8\ub9ac\uace0 Hillshade\uc5d0 \ub300\ud55c \uc18c\uac1c\ub97c \ub9c8\uce69\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc9c0\ud615\uc774\ub77c\ub294 \uc8fc\uc81c\ub85c \uc81c\uc791\ub41c \ub77c\uc2a4\ud130(Raster)\uc758 \uc140(Cell)\uc5d0 \uae30\ubc18\ud55c \ubd84\uc11d \uc911 \uacbd\uc0ac(Slope)\uc640 \ud5a5(Aspect) \ubd84\uc11d\uc740 \uc911\uc694\ud55c \uc790\ub9ac\ub97c \ucc28\uc9c0\ud558\uba70, \uc774 \uacbd\uc0ac\uc640 \ud5a5\uc740 \uc9c0\ud615\uc5d0 \ub300\ud55c \ubd84\uc11d \ubc0f \uc751\uc6a9\uc758 \ud30c\ub77c\uba54\ud130\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uae00\uc740 \uac1c\ubc1c \uc911\uc778 \uc9c0\ub3c4 \uc5d4\uc9c4\uc758 \ud655\uc7a5 \uae30\ub2a5\uc758 \ud558\ub098\ub85c\uc368 \uacbd\uc0ac\uc640 \ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uac83\uacfc \uc774 \uacbd\uc0ac\uc640 \ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ub2a5\uc744 \uc751\uc6a9\ud558\uc5ec \ub2e4\uc2dc \uc9c0\ud615\uc758 \uc74c\uc601\ub3c4(Hillshade)\ub97c \ub9cc\ub4dc\ub294 \ud655\uc7a5 \uae30\ub2a5\uc5d0 \ub300\ud55c \uc18c\uac1c\uc785\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ud655\uc7a5 \uae30\ub2a5\uc774\ub780 \uc9c0\ub3c4 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.gisdeveloper.co.kr\/?p=894\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;[GIS] \uac1c\ubc1c \ub9f5 \uc5d4\uc9c4\uc758 Slope, Aspect, Hillshade&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[5,36],"class_list":["post-894","post","type-post","status-publish","format-standard","hentry","category-algorithms","tag-gis","tag-map-engine"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=894"}],"version-history":[{"count":1,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/894\/revisions"}],"predecessor-version":[{"id":3447,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/894\/revisions\/3447"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=894"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}