{"id":6800,"date":"2019-05-04T11:43:34","date_gmt":"2019-05-04T02:43:34","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=6800"},"modified":"2020-05-28T11:36:37","modified_gmt":"2020-05-28T02:36:37","slug":"python%ea%b3%bc-opencv-31-surfspeeded-up-robust-feature%ec%9d%84-%ec%9d%b4%ec%9a%a9%ed%95%9c-%ec%9d%b4%eb%af%b8%ec%a7%80%ec%9d%98-%ed%8a%b9%ec%a7%95%ec%a0%90-%ec%b6%94%ec%b6%9c","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=6800","title":{"rendered":"Python\uacfc OpenCV \u2013 34 : SURF(Speeded-Up Robust Feature)\uc744 \uc774\uc6a9\ud55c \uc774\ubbf8\uc9c0\uc758 \ud2b9\uc9d5\uc810 \ucd94\ucd9c"},"content":{"rendered":"<p>\uc774 \uae00\uc758 \uc6d0\ubb38\uc740 https:\/\/opencv-python-tutroals.readthedocs.io\/en\/latest\/py_tutorials\/py_feature2d\/py_surf_intro\/py_surf_intro.html \uc785\ub2c8\ub2e4.<\/p>\n<p>SURF\ub294 SIFT\uc758 \uc218\ud589 \uc18d\ub3c4\ub97c \uac1c\uc120\uc2dc\ud0a8 \uac83\uc73c\ub85c, \ubd84\uc11d\uc5d0 \ub530\ub974\uba74 \ub300\ub7b5 3\ubc30 \uc815\ub3c4 \ube60\ub974\ub2e4\uace0 \ud569\ub2c8\ub2e4.SURF\ub294 \uc774\ubbf8\uc9c0\uac00 \ud68c\uc804\ub418\uac70\ub098 Blurring \ucc98\ub9ac\uac00 \ub418\uc5c8\uc744 \ub54c\uc5d0 \uc0ac\uc6a9\ud574\ub3c4 \uc798 \uc798\ub3d9\ud558\uc9c0\ub9cc \ubc1d\uae30\uac00 \ubcc0\uacbd\ub418\uac70\ub098 \uc2dc\uc810\uc774 \ubcc0\uacbd\uc774 \ub418\uba74 \uc801\ub2f9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<p>OpenCV\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 SURF\uc640 \uad00\ub828\ub41c \ud568\uc218\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">\r\nimport cv2\r\nimport numpy as np\r\n\r\nfilename = '.\/data\/butterfly.jpg'\r\nimg = cv2.imread(filename)\r\ngray= cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)\r\n\r\nsurf = cv2.xfeatures2d.SURF_create(50000)\r\n\r\nkp, des = surf.detectAndCompute(gray, None)\r\n\r\nprint(len(kp))\r\n\r\nimg2 = cv2.drawKeypoints(gray,kp,None,(0,0,255),4)\r\n\r\ncv2.imshow('img2', img2)\r\ncv2.waitKey()\r\ncv2.destroyAllWindows()\r\n<\/pre>\n<p>\uc704\uc758 \ucf54\ub4dc\uc5d0\uc11c \uc774\ubbf8\uc9c0\uc758 \ud2b9\uc9d5\uc810\uc744 \ucd94\ucd9c\ud558\uae30 \uc704\ud55c SURF \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uae30 \uc704\ud574 8\ubc88 \ucf54\ub4dc\uc5d0\uc11c SURF \uac1d\uccb4\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \uc0dd\uc131\uc2dc \ubc1b\ub294 \uc778\uc790\ub294 Hessian \uc784\uacc4\uac12\uc73c\ub85c \uc774 \uac12\uc774 \uc791\uc744\uc218\ub85d \ub354 \ub9ce\uc740 \ud2b9\uc9d5\uc810\uc774 \ucd94\ucd9c\ub429\ub2c8\ub2e4. \uc704 \uc608\uc81c\uc5d0\uc11c\ub294 \ucd94\ucd9c\ub420 \ud2b9\uc9d5\uc810 \uac1c\uc218\ub97c \uc904\uc774\uae30 \uc704\ud574 50000\uc744 \uc9c0\uc815\ud588\uc73c\ub098 \uc2e4\uc81c\uc5d0\uc11c\ub294 300-500 \uc0ac\uc774\uc758 \uac12\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4. 12\ubc88 \ucf54\ub4dc\uc5d0\uc11c \ucd94\ucd9c\ud55c \ud2b9\uc9d5\uc810\uc758 \uac1c\uc218\ub97c \ucd9c\ub825\ud558\uace0 \ud2b9\uc9d5\uc810\uc744 \uc774\ubbf8\uc9c0\uc5d0 \uadf8\ub9ac\uae30 \uc704\ud574 14\ubc88 \ucf54\ub4dc\uac00 \uc2e4\ud589\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uacb0\uacfc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/2019\/05\/SURF1.png\" alt=\"\" width=\"496\" height=\"389\" class=\"aligncenter size-full wp-image-6802\" \/><\/p>\n<p>\uc704\uc758 \uacb0\uacfc\ub97c \ubcf4\uba74 \ud2b9\uc9d5\uc810\uc758 \ubc29\ud5a5\ub3c4 \uac19\uc774 \ud45c\uc2dc\ub418\uace0 \uc788\ub294\ub370, \ubc29\ud5a5\uc774 \ud544\uc694\uc5c6\uc744 \uacbd\uc6b0 \uc18d\ub3c4 \ud5a5\uc0c1\uc744 \uc704\ud574 \ubc29\ud5a5 \uacc4\uc0b0\uc740 \ud558\uc9c0 \uc54a\ub3c4\ub85d \ud560 \uc218 \uc788\uc73c\uba70 \uc544\ub798 \uc608\uc81c\uc640 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">\r\nimport cv2\r\nimport numpy as np\r\n\r\nfilename = '.\/data\/butterfly.jpg'\r\nimg = cv2.imread(filename)\r\ngray= cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)\r\n\r\nsurf = cv2.xfeatures2d.SURF_create(50000)\r\n\r\nsurf.setUpright(True)\r\nkp, des = surf.detectAndCompute(gray, None)\r\n\r\nprint(len(kp))\r\n\r\nimg2 = cv2.drawKeypoints(gray,kp,None,(0,0,255),4)\r\n\r\ncv2.imshow('img2', img2)\r\ncv2.waitKey()\r\ncv2.destroyAllWindows()\r\n<\/pre>\n<p>10\ubc88 \ucf54\ub4dc\ub97c \ud1b5\ud574 \ubc29\ud5a5\uc740 \ud56d\uc0c1 \uc704\ucabd \ubc29\ud5a5\uc73c\ub85c \uac04\uc8fc\ud558\ub77c\uace0 \uc9c0\uc815\ud569\ub2c8\ub2e4. \uacb0\uacfc\ub294 \uc544\ub798\uc640 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/2019\/05\/SURF2.png\" alt=\"\" width=\"496\" height=\"389\" class=\"aligncenter size-full wp-image-6806\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \uae00\uc758 \uc6d0\ubb38\uc740 https:\/\/opencv-python-tutroals.readthedocs.io\/en\/latest\/py_tutorials\/py_feature2d\/py_surf_intro\/py_surf_intro.html \uc785\ub2c8\ub2e4. SURF\ub294 SIFT\uc758 \uc218\ud589 \uc18d\ub3c4\ub97c \uac1c\uc120\uc2dc\ud0a8 \uac83\uc73c\ub85c, \ubd84\uc11d\uc5d0 \ub530\ub974\uba74 \ub300\ub7b5 3\ubc30 \uc815\ub3c4 \ube60\ub974\ub2e4\uace0 \ud569\ub2c8\ub2e4.SURF\ub294 \uc774\ubbf8\uc9c0\uac00 \ud68c\uc804\ub418\uac70\ub098 Blurring \ucc98\ub9ac\uac00 \ub418\uc5c8\uc744 \ub54c\uc5d0 \uc0ac\uc6a9\ud574\ub3c4 \uc798 \uc798\ub3d9\ud558\uc9c0\ub9cc \ubc1d\uae30\uac00 \ubcc0\uacbd\ub418\uac70\ub098 \uc2dc\uc810\uc774 \ubcc0\uacbd\uc774 \ub418\uba74 \uc801\ub2f9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. OpenCV\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 SURF\uc640 \uad00\ub828\ub41c \ud568\uc218\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. import cv2 import numpy as np filename = &#8216;.\/data\/butterfly.jpg&#8217; img = cv2.imread(filename) gray= cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) surf &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.gisdeveloper.co.kr\/?p=6800\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;Python\uacfc OpenCV \u2013 34 : SURF(Speeded-Up Robust Feature)\uc744 \uc774\uc6a9\ud55c \uc774\ubbf8\uc9c0\uc758 \ud2b9\uc9d5\uc810 \ucd94\ucd9c&#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":[130,131],"tags":[],"class_list":["post-6800","post","type-post","status-publish","format-standard","hentry","category-opencv","category-python"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/6800","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=6800"}],"version-history":[{"count":8,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/6800\/revisions"}],"predecessor-version":[{"id":9437,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/6800\/revisions\/9437"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6800"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}