{"id":45235,"date":"2021-07-06T12:07:05","date_gmt":"2021-07-06T03:07:05","guid":{"rendered":"https:\/\/www.charlezz.com\/?p=45235"},"modified":"2021-07-06T12:07:05","modified_gmt":"2021-07-06T03:07:05","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-%ed%97%88%ed%94%84-%eb%b3%80%ed%99%98-%ec%9b%90-%ea%b2%80%ec%b6%9c-%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/charlezz.com\/?p=45235","title":{"rendered":"[\uc548\ub4dc\ub85c\uc774\ub4dc\ub85c \ubc30\uc6b0\ub294 OpenCV] \ud5c8\ud504 \ubcc0\ud658 \u2013 \uc6d0 \uac80\ucd9c \ud558\uae30"},"content":{"rendered":"<h1>\ud5c8\ud504 \uc6d0 \ubcc0\ud658(Hough Circle Transform;CHT)<\/h1>\n<p>\uc9c0\ub09c \ud3ec\uc2a4\ud305\uc5d0\uc11c \uc9c1\uc120\uc744 \uac80\ucd9c\ud558\ub294 <a href=\"https:\/\/www.charlezz.com\/?p=45218\">\ud5c8\ud504 \uc120 \ubcc0\ud658<\/a>\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\uc558\ub2e4. \uc774\ubc88 \ud3ec\uc2a4\ud305\uc5d0\uc11c\ub294 \ud5c8\ud504 \ubcc0\ud658\uc744 \ud1b5\ud574 \uc6d0\uc744 \uac80\ucd9c\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf8\ub2e4.<\/p>\n<p>\uc6b0\uc120 \uc6b0\ub9ac\uac00 \uc54c\uace0 \uc788\ub294 \uc6d0\uc744 \ud45c\ud604\ud558\ub294 \ud45c\uc900 \uc6d0 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n<pre class=\"\"><span>(x-a)<\/span><sup>2<\/sup><span>\u00a0+ (y-b)<\/span><sup>2<\/sup><span>\u00a0= r<\/span><sup>2<\/sup><\/pre>\n<p>r\uc740 \ubc18\uc9c0\ub984(radius)\uc744 \uc758\ubbf8\ud558\uace0, (a,b)\uc740 \uc6d0\uc758 \uc911\uc2ec\uc744 \uc758\ubbf8 \ud55c\ub2e4. \uc774 \ubc29\uc815\uc2dd\uc5d0\uc11c \uc6d0\uc744 \ud45c\ud604\ud558\uae30 \uc704\ud574 \uc6b0\ub9ac\ub294 3\uac1c\uc758 \ud30c\ub77c\ubbf8\ud130(a,b,r)\ub97c \ud544\uc694\ub85c \ud558\uace0 \uc788\ub2e4.<\/p>\n<p>\uc774\uc804\uc5d0 <a href=\"https:\/\/www.charlezz.com\/?p=45218\">\ud5c8\ud504 \uc120 \ubcc0\ud658<\/a>\uc5d0\uc11c\ub294 \ub450\uac1c\uc758 \ud30c\ub77c\ubbf8\ud130 (<span>\u03c1, \u03b8) \uc0ac\uc6a9 \ud588\uae30 \ub54c\ubb38\uc5d0, <\/span>2\ucc28\uc6d0 \ub204\uc801 \ubc30\uc5f4\uc744 \ud1b5\ud574 \uc120\uc744 \uac80\ucd9c \ud560 \uc218 \uc788\uc5c8\ub2e4. \ud558\uc9c0\ub9cc, \uc6d0\uc744 \ucc3e\uae30 \uc704\ud55c \ud5c8\ud504 \uc6d0 \ubcc0\ud658\uc740 3\uac1c\uc758 \ud30c\ub77c\ubbf8\ud130\ub97c \ud544\uc694\ub85c \ud558\uae30 \ub54c\ubb38\uc5d0, 3\ucc28\uc6d0 \ub204\uc801\ubc30\uc5f4\uc774 \ud544\uc694\ud558\ub2e4. \uc774\uac83\uc740 \ub9ce\uc740 \uc6a9\ub7c9\uc758 \uba54\ubaa8\ub9ac\ub97c \uc694\uad6c\ud558\uace0, \uc5f0\uc0b0 \uc18d\ub3c4 \ub610\ud55c \ub290\ub9ac\uac8c \ub9cc\ub4e0\ub2e4.\u00a0<\/p>\n<h2>\ubc18\uc9c0\ub984\uc744 \uc54c\uace0 \uc6d0\uc744 \ucc3e\uae30<\/h2>\n<p>\ub9cc\uc57d \uc774\ubbf8\uc9c0\ub0b4\uc5d0\uc11c \ubc18\uc9c0\ub984\uc758 \uae38\uc774\ub97c \uc54c\uace0 \uc788\ub2e4\uba74, \ub204\uc801\ubc30\uc5f4\uc744 2\ucc28\uc6d0 \ud3c9\uba74\uc73c\ub85c \ub2e4\uc2dc \ubc14\uafc0\uc218 \uc788\uac8c \ub41c\ub2e4. \uc6d0\uc758 \uc911\uc2ec\uc778 (a, b)\ub9cc \ucc3e\uc73c\uba74 \ub418\uae30 \ub54c\ubb38\uc774\ub2e4.<\/p>\n<p>\uc218\uc815\ub41c \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4<\/p>\n<pre class=\"lang: decode:true\">x = a + r * cos(\u03b8)\r\ny = b + r * sin(\u03b8)<\/pre>\n<p>\ud30c\ub77c\ubbf8\ud130 \uacf5\uac04 \uc0c1\uc5d0\uc11c (a, b) \uc810\uc758 \uada4\uc801\uc740 (x, y)\ub97c \uc911\uc2ec\uc73c\ub85c\ud558\ub294 \ubc18\uacbd r\uc758 \uc6d0\uc5d0 \uc18d\ud558\uac8c \ub41c\ub2e4.\u00a0<\/p>\n<p>\ub2e4\uc74c\uc758 \uc774\ubbf8\uc9c0\ub97c \ucc38\uace0\ud558\uc790.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1-1024x403.png\" alt=\"\" width=\"750\" height=\"295\" class=\"alignnone size-large wp-image-45237\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1-1024x403.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1-300x118.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1-768x302.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-32-1.png 1312w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\uc704 \uc774\ubbf8\uc9c0\uc5d0\uc11c \uc67c\ucabd\uc758 \uadf8\ub798\ud504\ub294 \uae30\ud558\ud559 \uacf5\uac04\uc0c1\uc758 \uadf8\ub798\ud504\uc774\uace0, \uc624\ub978\ucabd\uc758 \uadf8\ub798\ud504\ub294 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc0c1\uc758 \uadf8\ub798\ud504\uc774\ub2e4.<\/p>\n<p>\uc67c\ucabd\uc5d0\uc11c \uc2e4\uc81c \uc6d0\uc774 \ud3ec\ud568\ud558\uace0 \uc788\ub294 \uac01 \uc810\ub4e4\uc774 \uc624\ub978\ucabd\uc758 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc0c1\uc5d0\uc11c \uc0c8\ub85c\uc6b4 \uc6d0\uc744 \uc0dd\uc131\ud558\uace0 \uc788\ub2e4. \uc774\ub807\uac8c \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc0c1\uc5d0\uc11c \uc6d0\uc744 \ub204\uc801\uc2dc\ucf1c\uc11c \uadf8\ub824\ubcf4\uba74 \uac00\uc7a5 \ub9ce\uc774 \ub204\uc801\ub418\ub294 \uac12(\ube68\uac04\uc810)\uc774 \uc2e4\uc81c \uc6d0\uc758 \uc911\uc2ec\uac12\uc784\uc744 \uc54c\uc218 \uc788\uac8c \ub41c\ub2e4.<\/p>\n<p>\uc774 \ubd80\ubd84\uc740 \ub2e4\uc74c\uc758 \uc601\uc0c1\uc744 \ubcf4\uba74 \uc870\uae08 \ub354 \uc774\ud574\ud558\uae30 \uc26c\uc6b8 \uac83 \uac19\ub2e4. (3\ubd84 30\ucd08\ucbe4 \uc5d0\uc11c \uc798 \uc124\uba85 \ub418\uc5b4\uc788\ub2e4. )<\/p>\n<p><iframe loading=\"lazy\" width=\"632\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/Ltqt24SQQoI\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"allowfullscreen\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<h2>\ubc18\uc9c0\ub984\uc744 \uc54c\uace0 \uc5ec\ub7ec \uc6d0\uc744 \ucc3e\uae30<\/h2>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8-1024x467.png\" alt=\"\" width=\"750\" height=\"342\" class=\"alignnone size-large wp-image-45238\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8-1024x467.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8-300x137.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8-768x350.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-8.png 1246w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\ub3d9\uc77c\ud55c \ubc18\uc9c0\ub984\uc744 \uac00\uc9c4 \uc5ec\ub7ec \uc6d0\uc744 \ub3d9\uc77c\ud55c \ubc29\ubc95\uc73c\ub85c \ucc3e\uc744 \uc218 \uc788\ub2e4. \uc67c\ucabd \uc2e4\uc81c \uc6d0\uc758 \uc911\uc2ec\uc810\uc740 \uc624\ub978\ucabd \uadf8\ub9bc\uc758 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04 \uadf8\ub798\ud504\uc5d0\uc11c \ube68\uac04\uc0c9 \uc810\uc73c\ub85c \ud45c\ud604\ub41c\ub2e4. \uc6d0\uc774 \uc5ec\ub7ec\uac1c \uacb9\uce58\ub2e4\ubcf4\uba74 \ud30c\ub780\uc0c9 \uc810\uacfc \uac19\uc740 \uac00\uc9dc \uc911\uc2ec\uc810\ub3c4 \ubc1c\uacac \ub420 \uc218 \uc788\ub2e4. \uc774\ub7f4 \ub54c\ub294\u00a0\uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc758 \uc6d0\uacfc \ub300\uc870\ud558\uc5ec \uac00\uc9dc \uc6d0\uc744 \uc81c\uac70 \ud560 \uc218 \uc788\ub2e4.<\/p>\n<h2>\ubc18\uc9c0\ub984\uc744 \ubaa8\ub974\uace0 \uc6d0\uc744 \ucc3e\uae30<\/h2>\n<p>\ubc18\uc9c0\ub984\uc744 \uc54c \uc218 \uc5c6\ub294 \uacbd\uc6b0\uc5d0\ub294 r\uc744 \uace0\uc815\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c 3\uac1c\uc758 \ubcc0\uc218\uac00 \ud544\uc694\ud558\uba70, \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc774 3\ucc28\uc6d0\uc73c\ub85c \ubc14\ub010\ub2e4. \ud5c8\ud504 \ubcc0\ud658 \ubc29\uc2dd\uc73c\ub85c \ub3d9\uc77c\ud558\uac8c \uc6d0\uc744 \ucc3e\uc73c\ub824\uace0 \ud558\uba74 \uc6d0\uc744 \uad6c\uc131\ud558\ub294 \uc810\uc758 \uada4\uc801\uc774 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc5d0\uc11c \uc6d0\ubfd4\ud615\ud0dc\ub85c \ub098\ud0c0\ub09c\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-33.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-33-1024x415.png\" alt=\"\" width=\"750\" height=\"304\" class=\"alignnone size-large wp-image-45241\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-33-1024x415.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-33-300x121.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-33-768x311.png 768w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>\uc6d0\ubfd4 \ud45c\uba74\uc744\b\uac00\uc7a5 \ub9ce\uc774 \uad50\ucc28\ud558\ub294 \ubd80\ubd84\uc774 \ubc18\uc9c0\ub984\uc774 \ub41c\ub2e4. \uc774\ub7f0\uc2dd\uc73c\ub85c \ubc18\uc9c0\ub984\uc744 \ubab0\ub77c\ub3c4 \uc6d0\uc744 \ucc3e\uc744 \uc218\ub294 \uc788\uc9c0\ub9cc \ub9ce\uc740 \uba54\ubaa8\ub9ac\uc640 \uc5f0\uc0b0\ub7c9\uc744 \uc694\uad6c\ud558\uac8c \ub418\ubbc0\ub85c \ubcf4\ud1b5\uc740 \uacc4\uc0b0\uc744 \uc904\uc774\uae30 \uc704\ud574 <a href=\"https:\/\/www.charlezz.com\/?p=45180\">\uadf8\ub798\ub514\uc5b8\ud2b8(\ubc29\ud5a5)<\/a>\ub97c \uc774\uc6a9\ud558\uc5ec \uacc4\uc0b0\uc744 \ud558\uac8c \ub41c\ub2e4.<\/p>\n<h2>Hough Gradient Method<\/h2>\n<p>\uc774\ub984\uc5d0\uc11c \uc54c \uc218 \uc788\ub4ef\uc774 \uc774 \ubc29\ubc95\uc740 <a href=\"https:\/\/www.charlezz.com\/?p=45180\">\uadf8\ub798\ub514\uc5b8\ud2b8<\/a>\ub97c \uace0\ub824\ud55c\ub2e4. \uc704\uc758 \ubc29\ubc95\ub4e4\uc740 \uac01 \uc5e3\uc9c0 \ud3ec\uc778\ud2b8\uc5d0 \ub300\ud574 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc5d0 \ud574\ub2f9 \uc6d0\uc744 \uadf8\ub824\uc11c \ub204\uc801\ub418\ub294 \uac83\uc73c\ub85c \uc6d0\uc744 \uc720\ucd94 \ud588\ub2e4. \uadf8\ub7ec\ub098 \uc774\uc81c\ub294 \uc804\uccb4 \uc6d0\uc744 \uadf8\ub9ac\ub294 \ub300\uc2e0 \uc5e3\uc9c0 \ud53d\uc140\uc758 \uadf8\ub798\ub514\uc5b8\ud2b8 \ubc29\ud5a5\uc73c\ub85c \uc9c1\uc120\uc744 \uadf8\ub9ac\uba74\uc11c \uac12\uc744 \ub204\uc801\uc2dc\ud0a8\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11-709x1024.png\" alt=\"\" width=\"709\" height=\"1024\" class=\"alignnone size-large wp-image-45242\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11-709x1024.png 709w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11-208x300.png 208w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11-768x1109.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-11.png 1072w\" sizes=\"(max-width: 709px) 100vw, 709px\" \/><\/a><\/p>\n<p>\uc5e3\uc9c0\ub97c \uc21c\ud68c\ud558\uba70 \uc9c1\uc120\uc744 \uadf8\ub9b0 \uacb0\uacfc \uac00\uc7a5 \ub9ce\uc774 \ub204\uc801\ub41c \ud53d\uc140\uc774 \uc6d0\uc758 \uc911\uc2ec\uc810\uc774 \ub418\ub294 \uac83\uc774\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12-1024x522.png\" alt=\"\" width=\"750\" height=\"382\" class=\"alignnone size-large wp-image-45243\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12-1024x522.png 1024w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12-300x153.png 300w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12-768x392.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-12.png 1608w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a>\uc774\ub807\uac8c \ud558\uba74 \uc6d0\uc758 \uc911\uc2ec\uc810 (a, b) \ub97c \ucc3e\uc558\uae30 \ub54c\ubb38\uc5d0 \ubc18\uc9c0\ub984(r)\ub9cc \ucc3e\uc73c\uba74 \ub41c\ub2e4. \ubc18\uc9c0\ub984\uc5d0 \ub300\ud55c \uc801\uc808\ud55c \uc784\uacc4\uac12(threshold)\uc744 \uc124\uc815\ud558\uace0, \uc6d0\uc758 \uc911\uc2ec\uc73c\ub85c \ubd80\ud130 \uc6d0\uc744 \uc870\uae08\uc529 \ud06c\uac8c \uadf8\ub824 \ub098\uac00\uba74\uc11c \uc6d0\uc774 \ub420\ub9cc\ud55c \ud6c4\ubcf4\uad70\uc744 \uc120\ubcc4\ud55c\ub2e4.<\/p>\n<h2>\ud5c8\ud504 \uc6d0 \ubcc0\ud658 \uac80\ucd9c \ud568\uc218<\/h2>\n<p>OpenCV\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 \ud5c8\ud504 \uc6d0 \ubcc0\ud658 \uac80\ucd9c \ud568\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n<pre class=\"\"><span>Imgproc.HoughCircles<\/span>(\r\n    Mat image<span>, <\/span>Mat circles<span>, int <\/span>method<span>, double <\/span>dp<span>, \r\n    double <\/span>minDist<span>, double <\/span>param1<span>, double <\/span>param2<span>, \r\n    int <\/span>minRadius<span>, int <\/span>maxRadius\r\n) <\/pre>\n<pre class=\"\">image : \ud68c\uc0c9\uc870 \uc785\ub825\uc601\uc0c1(\ub0b4\ubd80\uc5d0\uc11c Canny\ub97c \uc801\uc6a9\ud558\ubbc0\ub85c \uc5e3\uc9c0\uc601\uc0c1 X)\r\ncircles : (cx, cy, r) \uc815\ubcf4\ub97c \ub2f4\uace0 \uc788\ub294 Mat\r\nmethod : OpenCV4.2 \uc774\ud558\uc5d0\uc11c\ub294 HOUGH_GRADIENT\ub9cc \uc9c0\uc815\uac00\ub2a5. \r\n         \uc774 \ud3ec\uc2a4\ud305\uc5d0\uc11c\ub3c4 HOUGH GRADIENT METHOD\uc5d0\uc11c\ub9cc \uc124\uba85\ud588\ub2e4.\r\ndp : \uc785\ub825 \uc601\uc0c1\uacfc \ub204\uc801 \ubc30\uc5f4\uc758 \ud06c\uae30 \ube44\uc728. 1\uc774\uba74 \ub3d9\uc77c\ud06c\uae30. 2\uc774\uba74 \ucd95\uc801\ubc30\uc5f4\uc758 \uac00\ub85c, \uc138\ub85c \ud06c\uae30\uac00 \uc785\ub825\uc601\uc0c1\uc758 \ubc18\r\nminDist : \uac80\ucd9c\ub41c \uc6d0 \uc911\uc2ec\uc810\ub4e4\uc758 \ucd5c\uc18c \uac70\ub9ac\r\nparam1 : Canny \uc5e3\uc9c0 \uac80\ucd9c\uae30\uc758 \ub192\uc740 \uc784\uacc4\uac12\r\nparam2 : \ub204\uc801 \ubc30\uc5f4\uc5d0\uc11c \uc6d0 \uac80\ucd9c\uc744 \uc704\ud55c \uc784\uacc4\uac12\r\nminRadius, maxRadius : \uac80\ucd9c\ud560 \uc6d0\uc758 \ucd5c\uc18c, \ucd5c\ub300 \ubc18\uc9c0\ub984<\/pre>\n<h2>\uc774\ubbf8\uc9c0 \uc18d \ub3d9\uc804 \uac80\ucd9c \uc608\uc81c<\/h2>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-coin.jpg\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-coin.jpg\" alt=\"\" width=\"568\" height=\"192\" class=\"alignnone size-full wp-image-45244\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-coin.jpg 568w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-coin-300x101.jpg 300w\" sizes=\"(max-width: 568px) 100vw, 568px\" \/><\/a><\/p>\n<p>\uc2e4\uc81c \uc704\uc640 \uac19\uc740 \uc774\ubbf8\uc9c0\uac00 \uc788\uace0 \uc774\ubbf8\uc9c0 \ub0b4\uc758 \ub3d9\uc804\uc744 \uac80\ucd9c\ud558\ub294 \uc608\uc81c\ub97c \uc0b4\ud3b4\ubcf4\uc790<\/p>\n<pre class=\"lang: decode:true \">\/\/ grayscale\ub85c \ubcc0\ud658\r\nval graySrc = Mat()\r\nImgproc.cvtColor(src, graySrc, Imgproc.COLOR_BGR2GRAY)\r\n\/\/ \uc880 \ub354 \uc815\ud655\ud55c \uac80\ucd9c\uc744 \uc704\ud574 \uc7a1\uc74c \uc81c\uac70\ub97c \uc704\ud55c \uac00\uc6b0\uc2dc\uc548 \ube14\ub7ec\ucc98\ub9ac\r\nval blurred = Mat()\r\nImgproc.GaussianBlur(graySrc, blurred, Size(0.0, 0.0), 1.0)\r\n\/\/ \ud5c8\ud504 \uc6d0 \ubcc0\ud658\uc744 \ud1b5\ud55c \uc6d0 \uac80\ucd9c\r\nval circles = Mat()\r\nImgproc.HoughCircles(\r\n    blurred,\r\n    circles,\r\n    Imgproc.HOUGH_GRADIENT,\r\n    1.0, \/\/ \uc785\ub825 \uc601\uc0c1\uacfc \ub204\uc801\ubc30\uc5f4 \ube44\uc728\r\n    50.0, \/\/ \uac80\ucd9c\ub41c \uc6d0 \uc911\uc2ec\uc810\ub4e4\uc758 \ucd5c\uc18c \uac70\ub9ac\r\n    150.0, \/\/ Canny \uc5d0\uc9c0 \uac80\ucd9c\uae30\uc758 \ub192\uc740 \uc784\uacc4\uac12\r\n    40.0, \/\/ \ub204\uc801 \ubc30\uc5f4\uc5d0\uc11c \uc6d0 \uac80\ucd9c\uc744 \uc704\ud55c \uc784\uacc4\uac12\r\n    50, \/\/ \uc6d0\uc758 \ucd5c\uc18c \ubc18\uc9c0\ub984\r\n    150 \/\/ \uc6d0\uc758 \ucd5c\ub300 \ubc18\uc9c0\ub984\r\n)\r\n\/\/ \uac80\ucd9c\ud55c \uc6d0\uc5d0 \ub367\uadf8\ub9ac\uae30\r\nfor (i in 0 until circles.cols()) {\r\n    val circle = circles.get(0, i) \/\/ \uac80\ucd9c\ub41c \uc6d0\r\n    val centerX = circle[0] \/\/ \uc6d0\uc758 \uc911\uc2ec\uc810 X\uc88c\ud45c\r\n    val centerY = circle[1] \/\/\uc6d0\uc758 \uc911\uc2ec\uc810 Y\uc88c\ud45c\r\n    val radius = Math.round(circle[2]).toInt() \/\/ \uc6d0\uc758 \ubc18\uc9c0\ub984\r\n    val center = Point(\r\n        Math.round(centerX).toDouble(),\r\n        Math.round(centerY).toDouble()\r\n    )\r\n    val centerColor = Scalar(0.0, 0.0, 255.0)\r\n    Imgproc.circle(src, center, 3, centerColor, 3)\r\n    val circleColor = Scalar(255.0, 0.0, 255.0)\r\n    Imgproc.circle(src, center, radius, circleColor, 3)\r\n}\r\n\r\n\/\/src \ub098\ud0c0\ub0b4\uae30<\/pre>\n<p>\uc6d0\uc744 \uac80\ucd9c\ud55c \uacb0\uacfc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n<p><a href=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934-820x1024.png\" alt=\"\" width=\"750\" height=\"937\" class=\"alignnone size-large wp-image-45246\" srcset=\"https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934-820x1024.png 820w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934-240x300.png 240w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934-768x959.png 768w, https:\/\/charlezz.com\/wordpress\/wp-content\/uploads\/2021\/06\/www.charlezz.com-opencv-screenshot-1624892892934.png 1768w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud5c8\ud504 \uc6d0 \ubcc0\ud658(Hough Circle Transform;CHT) \uc9c0\ub09c \ud3ec\uc2a4\ud305\uc5d0\uc11c \uc9c1\uc120\uc744 \uac80\ucd9c\ud558\ub294 \ud5c8\ud504 \uc120 \ubcc0\ud658\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\uc558\ub2e4. \uc774\ubc88 \ud3ec\uc2a4\ud305\uc5d0\uc11c\ub294 \ud5c8\ud504 \ubcc0\ud658\uc744 \ud1b5\ud574 \uc6d0\uc744 \uac80\ucd9c\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf8\ub2e4. \uc6b0\uc120 \uc6b0\ub9ac\uac00 \uc54c\uace0 \uc788\ub294 \uc6d0\uc744 \ud45c\ud604\ud558\ub294 \ud45c\uc900 \uc6d0 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. (x-a)2\u00a0+ (y-b)2\u00a0= r2 r\uc740 \ubc18\uc9c0\ub984(radius)\uc744 \uc758\ubbf8\ud558\uace0, (a,b)\uc740 \uc6d0\uc758 \uc911\uc2ec\uc744 \uc758\ubbf8 \ud55c\ub2e4. \uc774 \ubc29\uc815\uc2dd\uc5d0\uc11c \uc6d0\uc744 \ud45c\ud604\ud558\uae30 [&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\/45235"}],"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=45235"}],"version-history":[{"count":2,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45235\/revisions"}],"predecessor-version":[{"id":45247,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45235\/revisions\/45247"}],"wp:attachment":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}