{"id":45153,"date":"2021-06-08T10:29:46","date_gmt":"2021-06-08T01:29:46","guid":{"rendered":"https:\/\/www.charlezz.com\/?p=45153"},"modified":"2021-06-09T20:41:07","modified_gmt":"2021-06-09T11:41:07","slug":"%ec%95%88%eb%93%9c%eb%a1%9c%ec%9d%b4%eb%93%9c%eb%a1%9c-%eb%b0%b0%ec%9a%b0%eb%8a%94-opencv-%ec%9d%b4%eb%af%b8%ec%a7%80%ec%9d%98-%ec%97%a3%ec%a7%80-%ea%b2%80%ec%b6%9c%ea%b3%bc-%eb%af%b8%eb%b6%84","status":"publish","type":"post","link":"https:\/\/charlezz.com\/?p=45153","title":{"rendered":"[\uc548\ub4dc\ub85c\uc774\ub4dc\ub85c \ubc30\uc6b0\ub294 OpenCV] \uc774\ubbf8\uc9c0\uc758 \uc5e3\uc9c0 \uac80\ucd9c\uacfc \ubbf8\ubd84 (\uc18c\ubca8 \ud544\ud130, \uc0e4\ub974 \ud544\ud130)"},"content":{"rendered":"<h1>\uc5e3\uc9c0(edge)\uc640 \ubbf8\ubd84<\/h1>\n<p>\uc601\uc0c1\ucc98\ub9ac\uc5d0\uc11c \uc5e3\uc9c0\ub780 \uc774\ubbf8\uc9c0\uc5d0\uc11c \ud53d\uc140\uc758 \ubc1d\uae30\uac00 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \ubd80\ubd84\uc744 \ub9d0\ud55c\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c <strong>\ubc30\uacbd\uacfc \uac1d\uccb4<\/strong> \ub610\ub294 <strong>\uac1d\uccb4\uc640 \uac1d\uccb4\uc758 \uacbd\uacc4<\/strong>\ub97c \uc758\ubbf8 \ud55c\ub2e4.<\/p>\n<p>\uac1d\uccb4 \uacbd\uacc4\ubd80\ubd84\uc758 \ud53d\uc140\uac12\uc774 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \uac83\uc744 \uac00\uc815\uc73c\ub85c \ud558\uae30 \ub54c\ubb38\uc5d0 \uc2e4\uc81c\ub85c \uac1d\uccb4\uc758 \uacbd\uacc4\uc640 \ubc30\uacbd\uc758 \uac12\uc774 \ud06c\uac8c \ucc28\uc774\uac00 \uc5c6\ub2e4\uba74 \uc5e3\uc9c0\ub97c \uad6c\ubd84\ud558\uae30 \uc5b4\ub835\ub2e4.<\/p>\n<p>\uc774\ubbf8\uc9c0\ub97c (x,y)\ubcc0\uc218\uc758 \ud568\uc218\ub85c \ub098\ud0c0\ub0b4\uace0 (x,y) \uc88c\ud45c\uc758 \ud53d\uc140 \uac12\uc744 <strong><em>x<\/em><\/strong>\ub85c\u00a0 \ub098\ud0c0\ub0bc \ub54c \ub2e4\uc74c\uacfc \uac19\uc740 \uadf8\ub798\ud504\ub85c \ud45c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n<div id=\"attachment_45154\" style=\"width: 724px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-18.png\"><img aria-describedby=\"caption-attachment-45154\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-18.png\" alt=\"\" width=\"714\" height=\"424\" class=\"wp-image-45154 size-full\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-18.png 714w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-18-300x178.png 300w\" sizes=\"(max-width: 714px) 100vw, 714px\" \/><\/a><\/p>\n<p id=\"caption-attachment-45154\" class=\"wp-caption-text\">\uacc4\ub2e8\ud568\uc218 \uc131\uaca9\uc744 \ub744\ub294 \uc5e3\uc9c0<\/p>\n<\/div>\n<p>\uadf8\ub798\ud504\uc5d0\uc11c \ubcfc \uc218 \uc788\ub4ef\uc774 \ud53d\uc140\uac12\uc774 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \ubd80\ubd84\uc744 <strong>\uc5e3\uc9c0<\/strong>\ub77c\uace0 \ubcfc \uc218 \uc788\ub2e4. \uc774\ub807\uac8c \uae09\uaca9\ud558\uac8c \uc218\uc9c1\ud615\ud0dc\ub85c \ubc14\ub00c\ub294 \uac83\uc744 <a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EA%B3%84%EB%8B%A8_%ED%95%A8%EC%88%98\">\uacc4\ub2e8\ud568\uc218(step function)<\/a>\ub77c\uace0\ub3c4 \ud55c\ub2e4. \ud558\uc9c0\ub9cc \uc0ac\uc9c4(\uc774\ubbf8\uc9c0)\uc5d0\uc11c \uc2e4\uc81c\ub85c \uacc4\ub2e8\ud568\uc218 \ud615\ud0dc\ub85c \uae09\uaca9\ud55c \ubcc0\ud654\ub97c \ubcf4\uc5ec\uc8fc\ub294 \uacbd\uc6b0\ub294 \ub4dc\ubb3c\uace0, \ubcf4\ud1b5\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc2a4\ubb34\uc2a4\ud558\uac8c \ubc14\ub010\ub2e4.<\/p>\n<div id=\"attachment_45158\" style=\"width: 724px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-19.png\"><img aria-describedby=\"caption-attachment-45158\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-19.png\" alt=\"\" width=\"714\" height=\"430\" class=\"wp-image-45158 size-full\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-19.png 714w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-19-300x181.png 300w\" sizes=\"(max-width: 714px) 100vw, 714px\" \/><\/a><\/p>\n<p id=\"caption-attachment-45158\" class=\"wp-caption-text\">\uc644\ub9cc\ud55c \ud615\ud0dc\uc758 \uc5e3\uc9c0<\/p>\n<\/div>\n<p>\ud558\uc9c0\ub9cc \uc77c\ubc18\uc801\uc778 \uc774\ubbf8\uc9c0\ub294 \ub178\uc774\uc988\uac00 \ub4e4\uc5b4\uac04 \ud615\ud0dc\ub97c \ub74c \uc218 \uc788\ub294\ub370, \uc774\ub7f0 \uacbd\uc6b0\ub294 \uac00\uc6b0\uc2dc\uc548 \ube14\ub7ec\uc640 \uac19\uc740 \ud544\ud130\ub97c \uc801\uc6a9\ud558\uc5ec \uadf8\ub798\ud504\ub97c \uc644\ub9cc\ud558\uac8c \ub9cc\ub4e4\uc5b4 \uc5e3\uc9c0\ub97c \uac80\ucd9c\ud55c\ub2e4.<\/p>\n<div id=\"attachment_45159\" style=\"width: 722px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-20.png\"><img aria-describedby=\"caption-attachment-45159\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-20.png\" alt=\"\" width=\"712\" height=\"436\" class=\"wp-image-45159 size-full\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-20.png 712w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-20-300x184.png 300w\" sizes=\"(max-width: 712px) 100vw, 712px\" \/><\/a><\/p>\n<p id=\"caption-attachment-45159\" class=\"wp-caption-text\">\ub178\uc774\uc988\uac00 \ub4e4\uc5b4\uac04 \ud615\ud0dc<\/p>\n<\/div>\n<div id=\"attachment_45160\" style=\"width: 716px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-21.png\"><img aria-describedby=\"caption-attachment-45160\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-21.png\" alt=\"\" width=\"706\" height=\"420\" class=\"wp-image-45160 size-full\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-21.png 706w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-21-300x178.png 300w\" sizes=\"(max-width: 706px) 100vw, 706px\" \/><\/a><\/p>\n<p id=\"caption-attachment-45160\" class=\"wp-caption-text\">\ub178\uc774\uc988\uac00 \ub4e4\uc5b4\uac04 \uc774\ubbf8\uc9c0\uc5d0 \uac00\uc6b0\uc2dc\uc548 \ube14\ub7ec\ub97c \uc801\uc6a9\ud55c \ud615\ud0dc<\/p>\n<\/div>\n<p>\uae30\ubcf8\uc801\uc73c\ub85c \uc5e3\uc9c0\ub97c \uac80\ucd9c \ud558\ub294 \ubc29\ubc95\uc740 \uc704 \uadf8\ub798\ud504(\ud568\uc218)\uc758 \uac12\uc774 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \ubd80\ubd84\uc744 \ucc3e\ub294 \uac83\uc778\ub370, \ud568\uc218\uc758 <strong>1\ucc28 \ubbf8\ubd84(1st derivative)<\/strong> \uac12\uc774 \ud06c\uac8c \ub098\ud0c0\ub098\ub294 \ubd80\ubd84\uc744 \uc5e3\uc9c0\ub85c \uac04\uc8fc\ud55c\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24-1024x998.png\" alt=\"\" width=\"750\" height=\"731\" class=\"alignnone size-large wp-image-45161\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24-1024x998.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24-300x292.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24-768x748.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-24.png 1250w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\uac12\uc774 \ud280\ub294 a \ubd80\ubd84\uc744 \uc5b4\ub514\uae4c\uc9c0 \uc5e3\uc9c0\ub85c \uac04\uc8fc\ud560 \uac83\uc778\uc9c0\ub97c \uacb0\uc815\ud574\uc57c\ud558\uae30 \ub54c\ubb38\uc5d0 \uc801\uc808\ud55c threshold(\ud55c\uacc4\uc810)\uc744 \ub2e4\uc74c\uacfc \uac19\uc774 \uacb0\uc815\ud574\uc57c \ud55c\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1024x469.png\" alt=\"\" width=\"750\" height=\"344\" class=\"alignnone size-large wp-image-45162\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1024x469.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-300x138.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-768x352.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot.png 1226w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\uc6d0\ub798 \ubbf8\ubd84(=\uc21c\uac04\ubcc0\ud654\uc728)\uc774\ub77c\ub294 \uac83\uc740 \uc218\ud559\uc801\uc73c\ub85c limit\ub77c\ub294 \uae30\ud638\ub97c\uc4f0\uace0 \uc5b4\ub5a4 \ubcc0\ud654\ub7c9 x\uac00 0\uc5d0 \uac00\uae4c\uc6cc \uc9c8 \ub54c\b\ud568\uc218\uac12\uc774 \ud604\uc7ac\uc704\uce58 x\uc5d0\uc11c \ubcc0\ud654\ub7c9 x\ub97c \ub354\ud558\uace0 \uc790\uae30\uc790\uc2e0\uc758 \ud568\uc218\uac12\uc744 \ube80\uac83\uc5d0 \ubcc0\ud654\ub7c9 x\ub97c \ub098\ub208 \uac83\uc73c\ub85c \ud45c\ud604\ud55c\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1.png\" alt=\"\" width=\"746\" height=\"328\" class=\"alignnone size-full wp-image-45163\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1.png 746w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1-300x132.png 300w\" sizes=\"(max-width: 746px) 100vw, 746px\" \/><\/a><\/p>\n<p>\uc601\uc0c1\uc5d0\uc11c \ubbf8\ubd84\uc740 \ubcc0\ud654\ub7c9\uc774\ub77c\ub294 \uac83\uc758 \ucd5c\uc18c\ub2e8\uc704\uac00 \ud53d\uc140\uc774\uae30 \ub54c\ubb38\uc5d0 \ubcc0\ud654\ub7c9(<span>\u25b3x)\uc744 1\ub85c \uac00\uc815\ud55c\ub2e4.\u00a0<\/span><\/p>\n<p>\ubbf8\ubd84\uc744 \ud1b5\ud574 \ubcc0\ud654\ub7c9\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc740 3\uac00\uc9c0 \ubc29\ubc95\uc774 \uc874\uc7ac\ud55c\ub2e4.<\/p>\n<ul>\n<li>\uc804\uc9c4 \ucc28\ubd84(Forward difference)<\/li>\n<li>\ud6c4\uc9c4 \ucc28\ubd84(Backward difference)<\/li>\n<li>\uc911\uc559 \ucc28\ubd84(Centered difference)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25-1024x528.png\" alt=\"\" width=\"750\" height=\"387\" class=\"alignnone size-large wp-image-45164\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25-1024x528.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25-300x155.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25-768x396.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-25.png 1554w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\ubcc0\ud654\ub7c9<em>x<\/em>\uac00 1\uc774\ub77c\uace0 \ud588\uae30 \ub54c\ubb38\uc5d0 h\ub97c 1\ub85c \uac04\uc8fc\ud558\uba74 \ub41c\ub2e4.<\/p>\n<p>\uc138\uac00\uc9c0 \ubc29\ubc95\uc911\uc5d0\uc11c \uc5b4\ub5a4\uac83\uc744 \uc0ac\uc6a9\ud574\ub3c4 \uad00\uacc4 \uc5c6\uc73c\ub098 \ubcf4\ud1b5 \uc911\uc559\ucc28\ubd84\uc744 \uc0ac\uc6a9\ud558\ub294\uac8c \uc880 \ub354 \uc815\ud655\ud558\ub2e4. \uc804\uc9c4\ucc28\ubd84\uacfc \ud6c4\uc9c4\ucc28\ubd84\uc744 \uc0ac\uc6a9\ud558\ub294\uac83\ub3c4 \uacbd\uc6b0\uc5d0 \ub530\ub77c \uc788\uc73c\ub098 \ubcf4\ud1b5\uc740 \uc911\uc559\ucc28\ubd84\uc73c\ub85c \uacc4\uc0b0\ud55c\ub2e4.<\/p>\n<p>\uadf8\ub798\uc11c \uc911\uc559\ucc28\ubd84\uc73c\ub85c \uacc4\uc0b0\ud558\ub294 \ub9c8\uc2a4\ud06c\ub97c \ud558\ub098 \uc815\uc758 \ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-2.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-2.png\" alt=\"\" width=\"538\" height=\"452\" class=\"alignnone size-full wp-image-45165\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-2.png 538w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-2-300x252.png 300w\" sizes=\"(max-width: 538px) 100vw, 538px\" \/><\/a><\/p>\n<p>\uc704\uc5d0\uc11c \uc911\uc559\ucc28\ubd84\uc758 \uc218\uc2dd\uc744 \uc774\ub7ec\ud55c \ub9c8\uc2a4\ud06c \ud615\ud0dc\ub85c \ud45c\ud604\ud588\ub2e4\uace0 \uc0dd\uac01\ud558\uba74 \ub41c\ub2e4.\u00a0 \uac00\ub85c\ub85c (-1,0,1) \ud615\ud0dc\ub85c \ub418\uc5b4\uc788\ub294\uac83\uc740 x\ubc29\ud5a5\uc73c\ub85c \ubbf8\ubd84\uc744 \uc9c4\ud589\ud558\uace0 \uc138\ub85c\ub85c (-1,0,1) \ud615\ud0dc\ub85c \ub418\uc5b4\uc788\ub294\uac83\uc740 y\ubc29\ud5a5\uc73c\ub85c \ubbf8\ubd84\uc744 \uc9c4\ud589\ud55c\ub2e4\uace0 \ubcf4\uba74\ub41c\ub2e4. \uadf8\ub798\uc11c \uc774 \ub9c8\uc2a4\ud06c\uc640 \ud568\uaed8 OpenCV\uc758 filter2D \ud568\uc218\ub97c \ud638\ucd9c\ud558\uba74 x\ubc29\ud5a5\uc758 \ubbf8\ubd84\uc131\ubd84\uacfc y\ubc29\ud5a5\uc73c\ub85c \ubbf8\ubd84\uc131\ubd84\uc744 \uac01\uac01 \uad6c\ud560 \uc218 \uc788\uac8c \ub41c\ub2e4.<\/p>\n<p>\uadf8\ub807\uc9c0\ub9cc \ubcf4\ud1b5\uc740 1*3 \ub610\ub294 3*1 \ud615\ud0dc\uc758 \ub9c8\uc2a4\ud06c\ubcf4\ub2e4\ub294 3*3\ud615\ud0dc\uc758 \ub9c8\uc2a4\ud06c\ub97c \uc0ac\uc6a9\ud558\uac8c \ub41c\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3-1024x578.png\" alt=\"\" width=\"750\" height=\"423\" class=\"alignnone size-large wp-image-45166\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3-1024x578.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3-300x169.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3-768x433.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-3.png 1708w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\ub9c8\uc2a4\ud06c\uc758 \ud615\ud0dc\uc5d0 \ub530\ub77c Prewitt, Sobel, \ub610\ub294 Scharr\ub77c\uace0 \ubd88\ub9b0\ub2e4. Prewitt\ub294 1:1:1\uc758 \ud615\ud0dc\ub97c \ub744\uace0, 70\ub144\ub300\uc5d0 \ub098\uc628 Sobel(\uc18c\ubca8)\uc740 1:2:1\uc758 \ud615\ud0dc\ub97c \ub748\ub2e4.\u00a0 Scharr(\uc0e4\ub974)\ub294 2000\ub144\ub300\uc5d0 \ub098\uc654\uc73c\uba70 3:10:3\uc758 \ud615\ud0dc\ub97c \ub744\uace0 \uc788\ub2e4. \uc880 \ub354 \uac00\uc6b0\uc2dc\uc548\uc744 \uc798 \ud45c\ud604\ud558\uace0 \uadf8\ub798\uc11c \ubbf8\ubd84\uc744 \uc880 \ub354 \uc815\ud655\ud558\uac8c \uacc4\uc0b0\ud55c\ub2e4\uace0 \uc54c\ub824\uc838 \uc788\uc9c0\ub9cc \uc77c\ubc18\uc801\uc73c\ub85c\ub294 70\ub144\ub300\uc5d0 \ub098\uc628 Sobel(\uc18c\ubca8) \ub9c8\uc2a4\ud06c\ub97c \ub9ce\uc774 \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n<p>OpenCV\uc5d0\uc11c\ub294 \uc18c\ubca8\uacfc \uc0e4\ub974 \ubaa8\ub450 \uc9c0\uc6d0\ud558\uace0 \uc788\ub2e4.<\/p>\n<h2>OpenCV\uc18c\ubca8 \ud544\ud130\ub97c \uc774\uc6a9\ud55c \ubbf8\ubd84<\/h2>\n<pre class=\"\"><span>Sobel<\/span>(Mat src<span>, <\/span>Mat dst<span>, int <\/span>ddepth<span>, int <\/span>dx<span>, int <\/span>dy<span>, int <\/span>ksize)<\/pre>\n<pre class=\"\">src : \uc6d0\ubcf8 \uc601\uc0c1\r\ndst : \ucd9c\ub825 \uc601\uc0c1\r\nddepth : \ub370\uc774\ud130 \ud0c0\uc785. -1\uc774\uba74 \uc785\ub825 \uc601\uc0c1\uacfc \uac19\uc740 \ub370\uc774\ud130 \ud0c0\uc785 \uc0ac\uc6a9.\r\ndx : x\ubc29\ud5a5 \ubbf8\ubd84 \ucc28\uc218\r\ndy : y\ubc29\ud5a5 \ubbf8\ubd84 \ucc28\uc218\r\nksize : \ucee4\ub110\ud06c\uae30<\/pre>\n<p>\uc77c\ubc18\uc801\uc73c\ub85c (dx=1, dy=0, ksize=3) \ub610\ub294 (dx=0, dy=1, ksize=3)\uc73c\ub85c \uc9c0\uc815\ud558\uc5ec \uc0ac\uc6a9\ud55c\ub2e4.\u00a0<\/p>\n<p>\uc18c\ubca8\ud544\ud130\ub97c \uc801\uc6a9\ud55c \uacb0\uacfc\ub97c \ud655\uc778\ud558\uc790.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26-875x1024.png\" alt=\"\" width=\"750\" height=\"878\" class=\"alignnone size-large wp-image-45169\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26-875x1024.png 875w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26-256x300.png 256w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26-768x899.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-26.png 902w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28-876x1024.png\" alt=\"\" width=\"750\" height=\"877\" class=\"alignnone size-large wp-image-45167\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28-876x1024.png 876w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28-257x300.png 257w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28-768x897.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-28.png 902w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27-876x1024.png\" alt=\"\" width=\"750\" height=\"877\" class=\"alignnone size-large wp-image-45168\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27-876x1024.png 876w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27-257x300.png 257w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27-768x897.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-27.png 902w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>x\ubc29\ud5a5 \ub610\ub294 y\ubc29\ud5a5\uc5d0 \ub530\ub77c \uc5e3\uc9c0\uac00 \uac80\ucd9c\ub418\ub294 \ud615\ud0dc\uac00 \ub2e4\ub978 \uac83\uc744 \ud655\uc778 \ud560 \uc218 \uc788\ub2e4. \uc704\uc5d0\uc11c \uc5b8\uae09\ud588\ub4ef\uc774 \ub2e8\uc21c\ud788 3*3\ud615\ud0dc\uc758 \uc18c\ubca8\ub9c8\uc2a4\ud06c\ub97c \uc784\uc758\ub85c \uc815\uc758\ud558\uc5ec filter2D \ud568\uc218\ub97c \ud638\ucd9c\ud574\ub3c4 \ub3d9\uc77c\ud55c \uacb0\uacfc\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4. \uc774 \ubd80\ubd84\uc740 \uc0dd\ub7b5\ud55c\ub2e4.<\/p>\n<p>OpenCV\uc5d0\uc11c\ub294 \uc0e4\ub974 \ub610\ud55c \uc81c\uacf5\ud55c\ub2e4.<\/p>\n<pre class=\"\"><span>Scharr<\/span>(Mat src<span>, <\/span>Mat dst<span>, int <\/span>ddepth<span>, int <\/span>dx<span>, int <\/span>dy)<\/pre>\n<p>\ub9e4\uac1c\ubcc0\uc218\ub294 \uc18c\ubca8\ud544\ud130\uc640 \ub3d9\uc77c\ud558\ub2e4.<\/p>\n<p><strong>\uc0e4\ub974\ud544\ud130<\/strong>\ub97c \uc801\uc6a9\ud55c \uacb0\uacfc\ub97c \ud655\uc778\ud558\uc790.<a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31-874x1024.png\" alt=\"\" width=\"750\" height=\"879\" class=\"alignnone size-large wp-image-45170\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31-874x1024.png 874w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31-256x300.png 256w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31-768x900.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-31.png 898w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-876x1024.png\" alt=\"\" width=\"750\" height=\"877\" class=\"alignnone size-large wp-image-45171\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-876x1024.png 876w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-257x300.png 257w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-768x898.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32.png 900w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc5e3\uc9c0(edge)\uc640 \ubbf8\ubd84 \uc601\uc0c1\ucc98\ub9ac\uc5d0\uc11c \uc5e3\uc9c0\ub780 \uc774\ubbf8\uc9c0\uc5d0\uc11c \ud53d\uc140\uc758 \ubc1d\uae30\uac00 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \ubd80\ubd84\uc744 \ub9d0\ud55c\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \ubc30\uacbd\uacfc \uac1d\uccb4 \ub610\ub294 \uac1d\uccb4\uc640 \uac1d\uccb4\uc758 \uacbd\uacc4\ub97c \uc758\ubbf8 \ud55c\ub2e4. \uac1d\uccb4 \uacbd\uacc4\ubd80\ubd84\uc758 \ud53d\uc140\uac12\uc774 \uae09\uaca9\ud558\uac8c \ubcc0\ud558\ub294 \uac83\uc744 \uac00\uc815\uc73c\ub85c \ud558\uae30 \ub54c\ubb38\uc5d0 \uc2e4\uc81c\ub85c \uac1d\uccb4\uc758 \uacbd\uacc4\uc640 \ubc30\uacbd\uc758 \uac12\uc774 \ud06c\uac8c \ucc28\uc774\uac00 \uc5c6\ub2e4\uba74 \uc5e3\uc9c0\ub97c \uad6c\ubd84\ud558\uae30 \uc5b4\ub835\ub2e4. \uc774\ubbf8\uc9c0\ub97c (x,y)\ubcc0\uc218\uc758 \ud568\uc218\ub85c \ub098\ud0c0\ub0b4\uace0 (x,y) \uc88c\ud45c\uc758 \ud53d\uc140 \uac12\uc744 x\ub85c\u00a0 \ub098\ud0c0\ub0bc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[27],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45153"}],"collection":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=45153"}],"version-history":[{"count":4,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45153\/revisions"}],"predecessor-version":[{"id":45177,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45153\/revisions\/45177"}],"wp:attachment":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}