{"id":45125,"date":"2021-05-31T10:49:40","date_gmt":"2021-05-31T01:49:40","guid":{"rendered":"https:\/\/www.charlezz.com\/?p=45125"},"modified":"2021-05-31T10:49:40","modified_gmt":"2021-05-31T01:49:40","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-perspective-%eb%b3%80%ed%99%98-%ec%8a%a4%ec%ba%90%eb%84%88-%ec%95%b1-%eb%a7%8c%eb%93%a4%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/charlezz.com\/?p=45125","title":{"rendered":"[\uc548\ub4dc\ub85c\uc774\ub4dc\ub85c \ubc30\uc6b0\ub294 OpenCV] Perspective \ubcc0\ud658 (\uc2a4\uce90\ub108 \uc571 \ub9cc\ub4e4\uae30)"},"content":{"rendered":"

Perspective transformation<\/h1>\n

Perspective \ubcc0\ud658(\ud22c\uc2dc \ubcc0\ud658)\uc740 \uc774\ubbf8\uc9c0 \ub610\ub294 \uc774\ubbf8\uc9c0 \ub0b4\uc758 \uac1d\uccb4\ub97c \ub098\ub780\ud788 \uc9c1\uc120\uc73c\ub85c \ub9cc\ub4e4 \ub54c \ub9e4\uc6b0 \uc720\uc6a9\ud55c \ubcc0\ud658\uc774\ub2e4. Perspective \ubcc0\ud658\uc744 \uc801\uc6a9\ud558\ub294 \uc544\uc8fc \uc88b\uc740 \uc608\uc2dc\ub294 \ud14c\uc774\ube14 \uc704\uc758 \ubb38\uc11c\ub97c \uac00\uc9c0\ub7f0\ud558\uac8c \ub9cc\ub4dc\ub294 \uac83\uc774\ub2e4.<\/p>\n

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Perspective \ubcc0\ud658\uc744 \uc2dc\uc791\ud558\uae30 \uc55e\uc11c \uac04\ub2e8\ud788 \uc5b4\ub5a0\ud55c \ubc29\uc2dd\uc73c\ub85c \uc774\ub7ec\ud55c \uc791\uc5c5\uc744 \ud560 \uc218 \uc788\ub294\uc9c0 \uc54c\uc544\ubcf4\uc790.\u00a0<\/a><\/p>\n

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\uc6b0\uc120 \uc6d0\ubcf8 \uc774\ubbf8\uc9c0 \uc0c1\uc5d0\uc11c \uc0ac\ubcc0\ud615\uc758 \uc88c\ud45c\uc640 \ucd5c\uc885\uc801\uc73c\ub85c \ubcc0\ud615\ub41c \uc0ac\ubcc0\ud615\uc758 \uc88c\ud45c\ub97c \uc54c\uc544\uc57c \ud55c\ub2e4. \ub450 \uc0ac\ubcc0\ud615\uc758 \uc88c\ud45c\ub4e4\uc744 \ud1b5\ud574 \uc774\ub4e4\uc758 \uad00\uacc4\ub97c \ubcc0\ud658 \ud589\ub82c\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4. \uc774 \ubcc0\ud658 \ud589\ub82c\uc744 \ud1b5\ud574 \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc5d0 \uc801\uc6a9\ud574 \uc6d0\ud558\ub294 \uacb0\uacfc\ubb3c\uc744 \uc5bb\uc744 \uc218 \uc788\ub2e4. (\ubcc0\ud658 \ud589\ub82c\uc744 \uad6c\ud558\ub294 \uc218\uc2dd\uc740 \uc0dd\ub7b5\ud55c\ub2e4)\u00a0<\/p>\n

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\uc870\uae08 \ub354 \uc9c1\uad00\uc801\uc73c\ub85c \uc811\uadfc\ud558\uc790\uba74, \uc6b0\ub9ac\uac00 \ucc45\uc0c1\uc704\uc5d0 \uc788\ub294 \uc778\uc1c4\ubb3c(object)\uc744 \uce74\uba54\ub77c(eye)\ub85c \ucc0d\ub294 \uac01\ub3c4\uc5d0 \ub530\ub77c \ud654\uba74(screen)\uc0c1\uc5d0\uc11c \ubcf4\uc774\ub294 \uc778\uc1c4\ubb3c\uc758 \ubaa8\uc591\uc774 \ub2ec\ub77c\ubcf4\uc774\ub294 \uac83\uc744 \uc0c1\uc0c1\ud574\ubcf4\uba74 \uc870\uae08 \ub354 \uc774\ud574 \ud558\uae30 \uc26c\uc6b8\uac83\uc774\ub2e4. \uacb0\uad6d 3\ucc28\uc6d0 \uc0c1\uc758 \uac1d\uccb4\ub97c 2\ucc28\uc6d0(\ud3c9\uba74 \uc774\ubbf8\uc9c0)\uc5d0 \ud22c\uc601(projection)<\/a> \ud558\ub294 \uac83\uc774 \uc774 \ud3ec\uc2a4\ud305\uc5d0\uc11c \ub9d0\ud558\uace0\uc790 \ud558\ub294 \ud575\uc2ec\uc774\uace0, \uc774\ub97c \uc218\ud559\uc801\uc73c\ub85c \uacc4\uc0b0\ud55c \uacb0\uacfc\uac00 (\ubcc0\ud658)\ud589\ub82c\ub85c \ub098\uc628\ub2e4.\u00a0<\/p>\n

OpenCV\uc5d0\uc11c\ub294 \uc774 \ud589\ub82c\uc744 \uad6c\ud574\uc8fc\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud568\uc218\ub97c \uc81c\uacf5\ud55c\ub2e4.<\/p>\n

Mat getPerspectiveTransform(Mat src, Mat <\/span>dst)<\/pre>\n
src : \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc5d0\uc11c 4\uac1c\uc758 \uc88c\ud45c\r\ndst : \ucd9c\ub825 \uc774\ubbf8\uc9c0\uc5d0\uc11c 4\uac1c\uc758 \uc88c\ud45c<\/pre>\n
\ubcc0\ud658\ud589\ub82c\uc744 \uad6c\ud588\ub2e4\uba74 warpPerspective \ud568\uc218\ub97c \ud1b5\ud574 \uc6d0\ud558\ub294 \uacb0\uacfc \uc601\uc0c1\uc744 \uc5bb\uc744 \uc218 \uc788\uac8c \ub41c\ub2e4.<\/p>\n
warpPerspective<\/span>(Mat src, <\/span>Mat dst, <\/span>Mat M, <\/span>Size dsize)<\/pre>\n
src : \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\r\ndst : \ucd9c\ub825 \uc774\ubbf8\uc9c0\r\nM : \ubcc0\ud658 \ud589\ub82c\r\ndsize : \ucd9c\ub825\ud560 \uacb0\uacfc \uc601\uc0c1\uc758 \uc0ac\uc774\uc988<\/pre>\n
\/\/ A4 \uc6a9\uc9c0 \ud06c\uae30: 210x297cm\r\nval width = 210.0\r\nval height = 297.0\r\n\r\n\/\/ \uc6d0\ubcf8 \uc601\uc0c1\r\nval src:Mat = .. \r\n\r\n\/\/ \uc6d0\ubcf8 \uc774\ubbf8\uc9c0 \uc0c1\uc758 4\uac1c \uc88c\ud45c\r\nval srcQuad = MatOfPoint2f(\r\n    Point(58.0, 130.0),\r\n    Point(420.0, 130.0),\r\n    Point(88.0, 710.0),\r\n    Point(570.0, 635.0)\r\n)\r\n\r\n\/\/ \ucd9c\ub825 \uc774\ubbf8\uc9c0\uc0c1\uc758 4\uac1c \uc88c\ud45c\r\nval dstQuad = MatOfPoint2f(\r\n    Point(0.0, 0.0),\r\n    Point(width - 1, 0.0),\r\n    Point(0.0, height - 1),\r\n    Point(width - 1, height - 1),\r\n)\r\n\r\n\/\/ \ud22c\uc2dc \ubcc0\ud658 \ud589\ub82c \uad6c\ud558\uae30\r\nval perspectiveTransform = Imgproc.getPerspectiveTransform(srcQuad, dstQuad)\r\n\r\n\/\/ \uc778\uc1c4\ubb3c \uae30\uc900\uc73c\ub85c \uac00\uc9c0\ub7f0\ud558\uac8c \ub9cc\ub4e4\uae30\r\nvar dst = Mat()\r\nImgproc.warpPerspective(src, dst, perspectiveTransform, Size(0.0, 0.0))\r\n\r\n\/\/ \uc778\uc1c4\ubb3c\ub9cc \ucd94\ucd9c\r\ndst = dst.submat(0, height.toInt(), 0, width.toInt())<\/pre>\n
\uac00\uc9c0\ub7f0\ud788 \ucd9c\ub825\ub41c \uc778\uc1c4\ubb3c \uc601\uc0c1 <\/strong>(\uc608\uc81c\ucf54\ub4dc<\/a>)<\/p>\n
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\uc2a4\uce90\ub108 \uc571 \ub9cc\ub4e4\uae30<\/h2>\n

\nhttps:\/\/www.charlezz.com\/wordpress\/wp-content\/uploads\/2021\/05\/www.charlezz.com-opencv-perspective-screencapture-1621543465766.mp4<\/a><\/video><\/div>\n
Perspective \ubcc0\ud658\uc744 \ud1b5\ud574 \uac04\ub2e8\ud55c \ubb38\uc11c(\uba85\ud568) \uc2a4\uce90\ub108 \uc571\uc744 \ub9cc\ub4e4\uc5b4 \ubcf4\uc790. (\uc608\uc81c\ucf54\ub4dc<\/a>)<\/p>\n