{"id":38750,"date":"2024-11-02T00:56:48","date_gmt":"2024-11-02T00:56:48","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=38750"},"modified":"2024-11-26T06:43:26","modified_gmt":"2024-11-26T06:43:26","slug":"opencv-%ea%b0%95%ec%a2%8c-haar-cascade-classifier-%ec%82%ac%ec%9a%a9%eb%b2%95","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/38750\/","title":{"rendered":"OpenCV \uac15\uc88c, Haar Cascade Classifier \uc0ac\uc6a9\ubc95"},"content":{"rendered":"

<\/p>\n

\n \ucef4\ud4e8\ud130 \ube44\uc804\uc758 \ud55c \ubd84\uc57c\uc5d0\uc11c \uac1d\uccb4 \uac10\uc9c0\ub294 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \ub2e4\uc591\ud55c \ubc29\ubc95\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\uc911\uc5d0\uc11c\ub3c4 Haar Cascade Classifier\ub294 \uac04\ud3b8\ud558\uac8c \uac1d\uccb4\ub97c \uac10\uc9c0\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc73c\ub85c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \ud3ec\uc2a4\ud2b8\uc5d0\uc11c\ub294 OpenCV\uc640 Haar Cascade Classifier\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac1d\uccb4\ub97c \uac10\uc9c0\ud558\ub294 \ubc29\ubc95\uc744 \uc790\uc138\ud788 \uc124\uba85\ud569\ub2c8\ub2e4.\n <\/p>\n

1. Haar Cascade Classifier\ub780?<\/h2>\n

\n Haar Cascade Classifier\ub294 Viola-Jones \uc54c\uace0\ub9ac\uc998\uc5d0 \uae30\ubc18\uc744 \ub450\uace0 \uc788\uc73c\uba70, \uac1d\uccb4 \uc778\uc2dd \ubc0f \uc5bc\uad74 \uc778\uc2dd\uc5d0 \ub6f0\uc5b4\ub09c \uc131\ub2a5\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \uc774 \ubc29\ubc95\uc740 \uc774\ubbf8\uc9c0\uc5d0\uc11c \uac1d\uccb4\ub97c \uac10\uc9c0\ud558\uae30 \uc704\ud574\uc11c \uc5ec\ub7ec \uac1c\uc758 \ud2b9\uc9d5\uc744 \uace0\ub824\ud558\ub294 \ub2e8\uacc4\uc801 \ubd84\ub958\uae30\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. Haar \ud2b9\uc9d5\uacfc \ub2e8\uacc4\uc801 \ubd84\ub958\uae30\ub97c \uacb0\ud569\ud558\uc5ec, \ube60\ub974\uba74\uc11c\ub3c4 \ud6a8\uacfc\uc801\uc73c\ub85c \uac1d\uccb4\ub97c \uc778\uc2dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n <\/p>\n

2. Haar \ud2b9\uc9d5 (Haar Features)<\/h2>\n

\n Haar \ud2b9\uc9d5\uc740 \ud2b9\uc815 \uc601\uc5ed\uc758 \ubc1d\uae30 \ucc28\uc774\ub97c \ub098\ud0c0\ub0b4\ub294 \uac04\ub2e8\ud55c \ud615\ud0dc\uc785\ub2c8\ub2e4. \uc774\ubbf8\uc9c0\uc5d0\uc11c \uc0ac\uac01\ud615 \uc601\uc5ed\uc744 \uc120\ud0dd\ud558\uace0, \uac01\uac01\uc758 \uc601\uc5ed\uc758 \ud53d\uc140 \uac12\uc758 \ucc28\uc774\ub97c \uacc4\uc0b0\ud558\uc5ec \ud2b9\uc9d5\uc744 \ub9cc\ub4e4\uc5b4\ub0c5\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ubb3c\uccb4\uc758 \ud615\ud0dc\ub098 \uc724\uacfd\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n <\/p>\n

3. Haar Cascade \uad6c\uc870<\/h2>\n

\n Haar Cascade \ubd84\ub958\uae30\ub294 \uc5ec\ub7ec \ub2e8\uacc4\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uac01 \ub2e8\uacc4\uc5d0\uc11c\ub294 \ud2b9\uc815\ud55c \ud328\ud134\uc744 \ud559\uc2b5\ud558\uc5ec, \uc774\uac83\uc774 \ud574\ub2f9 \uac1d\uccb4\uc778\uc9c0 \uc544\ub2cc\uc9c0\ub97c \ud310\ub2e8\ud569\ub2c8\ub2e4. \ubaa8\ub4e0 \ub2e8\uacc4\uac00 \ud1b5\uacfc\ud574\uc57c \ucd5c\uc885\uc801\uc73c\ub85c \uac1d\uccb4\ub85c \ud310\ub2e8\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uad6c\uc870 \ub355\ubd84\uc5d0 \uac1d\uccb4 \uac10\uc9c0\uc758 \uc815\ud655\ub3c4\ub97c \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n <\/p>\n

4. OpenCV \uc124\uce58<\/h2>\n

\n Haar Cascade Classifier\ub97c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 OpenCV\uac00 \uc124\uce58\ub418\uc5b4 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4. OpenCV\ub294 Python \ud328\ud0a4\uc9c0\ub85c \uc124\uce58\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub798\uc758 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud574\uc8fc\uc138\uc694.\n <\/p>\n

pip install opencv-python<\/code><\/pre>\n
5. Haar Cascade XML \ud30c\uc77c \ub2e4\uc6b4\ub85c\ub4dc<\/h2>\n
\n        Haar Cascade Classifier\ub97c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubbf8\ub9ac \ud559\uc2b5\ub41c \ubaa8\ub378\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. OpenCV\uc5d0\uc11c\ub294 \ub2e4\uc591\ud55c \uac1d\uccb4\ub97c \uac10\uc9c0\ud560 \uc218 \uc788\ub294 Haar Cascade XML \ud30c\uc77c\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc5bc\uad74 \uc778\uc2dd\uc744 \uc704\ud55c \ud30c\uc77c\uc778 haarcascade_frontalface_default.xml<\/code>\ub97c \uc0ac\uc6a9\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \ud30c\uc77c\uc740 OpenCV\uc758 GitHub \uc800\uc7a5\uc18c \ub610\ub294 \uc124\uce58\ub41c OpenCV \ub514\ub809\ud130\ub9ac\uc5d0\uc11c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n    <\/p>\n
6. Haar Cascade Classifier \ud65c\uc6a9 \uc608\uc81c<\/h2>\n
\n        \uc544\ub798 \uc608\uc81c\uc5d0\uc11c\ub294 Haar Cascade Classifier\ub97c \ud1b5\ud574 Webcam\uc73c\ub85c \ucc0d\uc740 \uc601\uc0c1\uc744 \uc2e4\uc2dc\uac04\uc73c\ub85c \ubd84\uc11d\ud558\uc5ec \uc5bc\uad74\uc744 \uac10\uc9c0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.\n    <\/p>\n
6.1 \uc608\uc81c \ucf54\ub4dc<\/h3>\n
\nimport cv2\n\n# Haar Cascade Classifier \ud30c\uc77c \uacbd\ub85c \uc124\uc815\ncascPath = \"haarcascade_frontalface_default.xml\"\nfaceCascade = cv2.CascadeClassifier(cascPath)\n\n# \ub3d9\uc601\uc0c1 \ucea1\ucc98 \uac1d\uccb4 \uc0dd\uc131 (0\uc740 \uae30\ubcf8 \uce74\uba54\ub77c)\nvideo_capture = cv2.VideoCapture(0)\n\nwhile True:\n    # \ube44\ub514\uc624 \ud504\ub808\uc784 \uc77d\uae30\n    ret, frame = video_capture.read()\n    \n    # \ud504\ub808\uc784\uc744 \uadf8\ub808\uc774\uc2a4\ucf00\uc77c\ub85c \ubcc0\ud658\n    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)\n    \n    # \uc5bc\uad74 \uac10\uc9c0\n    faces = faceCascade.detectMultiScale(gray, 1.1, 4)\n    \n    # \uac10\uc9c0\ub41c \uc5bc\uad74\uc5d0 \uc0ac\uac01\ud615 \uadf8\ub9ac\uae30\n    for (x, y, w, h) in faces:\n        cv2.rectangle(frame, (x, y), (x+w, y+h), (255, 0, 0), 2)\n\n    # \uacb0\uacfc \ud504\ub808\uc784 \ubcf4\uc5ec\uc8fc\uae30\n    cv2.imshow('Video', frame)\n    \n    # 'q' \ud0a4\ub97c \ub204\ub974\uba74 \uc885\ub8cc\n    if cv2.waitKey(1) & 0xFF == ord('q'):\n        break\n\n# \ub9ac\uc18c\uc2a4 \ud574\uc81c\nvideo_capture.release()\ncv2.destroyAllWindows()\n    <\/code><\/pre>\n
6.2 \ucf54\ub4dc \uc124\uba85<\/h3>\n
    \n
  1. cv2.VideoCapture(0)<\/code>: \uae30\ubcf8 \uce74\uba54\ub77c\ub85c\ubd80\ud130 \ube44\ub514\uc624 \uc2a4\ud2b8\ub9bc\uc744 \ucea1\ucc98\ud569\ub2c8\ub2e4.<\/li>\n
  2. cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)<\/code>: \ucea1\ucc98\ud55c \uc774\ubbf8\uc9c0\ub97c \uadf8\ub808\uc774\uc2a4\ucf00\uc77c\ub85c \ubcc0\ud658\ud569\ub2c8\ub2e4.<\/li>\n
  3. faceCascade.detectMultiScale(gray, 1.1, 4)<\/code>: \uadf8\ub808\uc774\uc2a4\ucf00\uc77c \uc774\ubbf8\uc9c0\uc5d0\uc11c \uc5bc\uad74\uc744 \uac10\uc9c0\ud569\ub2c8\ub2e4. \uccab \ubc88\uc9f8 \uc778\uc790\ub294 \uc774\ubbf8\uc9c0, \ub450 \ubc88\uc9f8 \uc778\uc790\ub294 \uc2a4\ucf00\uc77c \ud329\ud130, \uc138 \ubc88\uc9f8 \uc778\uc790\ub294 \uc778\uc811\ud55c \uac1d\uccb4 \uac04\uc758 \ucd5c\uc18c \uac70\ub9ac\uc785\ub2c8\ub2e4.<\/li>\n
  4. cv2.rectangle()<\/code>: \uac10\uc9c0\ub41c \uc5bc\uad74 \uc8fc\ubcc0\uc5d0 \uc0ac\uac01\ud615\uc744 \uadf8\ub9bd\ub2c8\ub2e4.<\/li>\n
  5. cv2.imshow()<\/code>: \uacb0\uacfc \ud504\ub808\uc784\uc744 \ud654\uba74\uc5d0 \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n
    7. \uc131\ub2a5 \uac1c\uc120 \ubc0f \uc870\uc815<\/h2>\n
    \n        \uae30\ubcf8 \uc608\uc81c\uc5d0\uc11c \uc131\ub2a5\uc774 \ub9cc\uc871\uc2a4\ub7fd\uc9c0 \uc54a\uac70\ub098 \ub2e4\uc591\ud55c \ud658\uacbd\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ub97c \ud574\uc57c\ud558\ub294 \uacbd\uc6b0, \ub2e4\uc74c\uc758 \ud56d\ubaa9\uc744 \uc870\uc815\ud558\uc5ec \uc131\ub2a5\uc744 \uac1c\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n    <\/p>\n