{"id":38744,"date":"2024-11-02T00:56:45","date_gmt":"2024-11-02T00:56:45","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=38744"},"modified":"2024-11-26T06:43:27","modified_gmt":"2024-11-26T06:43:27","slug":"opencv-%ea%b0%95%ec%a2%8c-%ed%95%84%ed%84%b0%eb%a7%81-%ec%a0%84%ed%9b%84-%eb%b9%84%ea%b5%90%ec%99%80-%ec%8b%a4%ec%83%9d%ed%99%9c-%ec%98%88%ec%a0%9c","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/38744\/","title":{"rendered":"OpenCV \uac15\uc88c, \ud544\ud130\ub9c1 \uc804\ud6c4 \ube44\uad50\uc640 \uc2e4\uc0dd\ud65c \uc608\uc81c"},"content":{"rendered":"

<\/p>\n

OpenCV\ub294 \ucef4\ud4e8\ud130 \ube44\uc804 \ubc0f \uc774\ubbf8\uc9c0 \ucc98\ub9ac\ub97c \uc704\ud55c \uac15\ub825\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 OpenCV\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc774\ubbf8\uc9c0 \ud544\ud130\ub9c1\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc124\uba85\ud558\uace0, \ud544\ud130\ub9c1 \uc804\ud6c4\uc758 \uc774\ubbf8\uc9c0\ub97c \ube44\uad50\ud558\ub294 \ubc29\ubc95\uc744 \ub2e4\ub8f9\ub2c8\ub2e4. \ub610\ud55c \uc2e4\uc0dd\ud65c\uc5d0\uc11c \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ub420 \uc218 \uc788\ub294 \uc608\uc81c\ub97c \ud1b5\ud574 \uadf8 \uc801\uc6a9 \uac00\ub2a5\uc131\uc744 \ubcf4\uc5ec\ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n

1. \ud544\ud130\ub9c1\uc758 \uae30\ubcf8 \uac1c\ub150<\/h2>\n

\ud544\ud130\ub9c1\uc740 \uc774\ubbf8\uc9c0 \ud504\ub85c\uc138\uc2f1\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uae30\ubcf8\uc801\uc73c\ub85c \ud544\ud130\ub9c1\uc740 \uc774\ubbf8\uc9c0\uc758 \ud53d\uc140 \uac12\uc744 \uc218\uc815\ud558\uc5ec \ud2b9\uc815 \ud6a8\uacfc\ub97c \uc8fc\ub294 \uae30\uc220\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub178\uc774\uc988 \uc81c\uac70, \uc5e3\uc9c0 \uac10\uc9c0, \uc120\uba85\ub3c4 \ud5a5\uc0c1 \ub4f1\uc758 \uc5c5\ubb34\ub97c \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

1.1. \ube14\ub7ec\ub9c1 (Blur)<\/h3>\n

\ube14\ub7ec\ub9c1\uc740 \uc774\ubbf8\uc9c0\uc758 \uc138\ubd80 \uc0ac\ud56d\uc744 \uc904\uc774\uace0 \ub178\uc774\uc988\ub97c \uc81c\uac70\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. Gaussian \ube14\ub7ec, \ud3c9\uade0 \ube14\ub7ec, \ubbf8\ub514\uc548 \ube14\ub7ec \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

1.2. \uc5e3\uc9c0 \uac10\uc9c0 (Edge Detection)<\/h3>\n

\uc5e3\uc9c0 \uac10\uc9c0\ub294 \uc774\ubbf8\uc9c0\uc5d0\uc11c \uac1d\uccb4\uc758 \uacbd\uacc4\ub97c \ucc3e\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. Canny \uc5e3\uc9c0 \uac10\uc9c0\uae30\uac00 \uac00\uc7a5 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n

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

\uba3c\uc800, OpenCV\ub97c \uc124\uce58\ud574\uc57c \ud569\ub2c8\ub2e4. \ud30c\uc774\uc36c \ud658\uacbd\uc5d0\uc11c \ub2e4\uc74c \ucee4\ub9e8\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec OpenCV\ub97c \uc124\uce58\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

pip install opencv-python<\/code><\/pre>\n
3. \uc774\ubbf8\uc9c0 \ud544\ud130\ub9c1\uacfc \uc804\ud6c4 \ube44\uad50<\/h2>\n
\uc774\uc81c \ud544\ud130\ub9c1\uc744 \uc801\uc6a9\ud558\uc5ec \uc774\ubbf8\uc9c0\ub97c \ubcc0\uacbd\ud558\uace0 \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc640 \ube44\uad50\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc544\ub798\ub294 \uc5b4\ub5a4 \uc774\ubbf8\uc9c0\ub97c Gaussian \ube14\ub7ec\ub85c \ud544\ud130\ub9c1\ud558\uace0, \uacb0\uacfc\ub97c \ube44\uad50\ud558\ub294 \ucf54\ub4dc\uc785\ub2c8\ub2e4.<\/p>\n
3.1. \ucf54\ub4dc \uc608\uc81c<\/h3>\n
import cv2\nimport numpy as np\nimport matplotlib.pyplot as plt\n\n# \uc774\ubbf8\uc9c0 \uc77d\uae30\nimage = cv2.imread('input_image.jpg')\nimage = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)\n\n# Gaussian \ube14\ub7ec \uc801\uc6a9\nblurred_image = cv2.GaussianBlur(image, (15, 15), 0)\n\n# \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc640 \ud544\ud130\ub9c1\ub41c \uc774\ubbf8\uc9c0 \ube44\uad50\nplt.figure(figsize=(12, 6))\nplt.subplot(1, 2, 1)\nplt.title('\uc6d0\ubcf8 \uc774\ubbf8\uc9c0')\nplt.imshow(image)\nplt.axis('off')\n\nplt.subplot(1, 2, 2)\nplt.title('Gaussian \ube14\ub7ec \uc801\uc6a9 \uc774\ubbf8\uc9c0')\nplt.imshow(blurred_image)\nplt.axis('off')\n\nplt.show()<\/code><\/pre>\n
4. \uc2e4\uc0dd\ud65c \uc608\uc81c: \uc5bc\uad74 \uc778\uc2dd\uacfc \ub178\uc774\uc988 \uc81c\uac70<\/h2>\n
\uc5bc\uad74 \uc778\uc2dd \uc2dc\uc2a4\ud15c\uc740 \uc774\ubbf8\uc9c0\ub97c \ucc98\ub9ac\ud558\uc5ec \ud2b9\uc815 \ud328\ud134\uc744 \ucc3e\ub294 \uac83\uc5d0 \uc758\uc874\ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \ub178\uc774\uc988 \uc81c\uac70\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ub2e4\uc74c\uc758 \ucf54\ub4dc\ub294 \uc5bc\uad74\uc744 \uac80\ucd9c\ud558\uae30 \uc804\uc5d0 \ub178\uc774\uc988\ub97c \uc81c\uac70\ud558\ub294 \uacfc\uc815\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/p>\n
4.1. \ucf54\ub4dc \uc608\uc81c<\/h3>\n
# \uc5bc\uad74 \uc778\uc2dd\uc744 \uc704\ud55c OpenCV\uc758 Haar Cascade Classifier \uc0ac\uc6a9\nface_cascade = cv2.CascadeClassifier(cv2.data.haarcascades + 'haarcascade_frontalface_default.xml')\n\n# \uc774\ubbf8\uc9c0 \uc77d\uae30\nimage = cv2.imread('face_image.jpg')\nimage = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)\n\n# \ub178\uc774\uc988 \uc81c\uac70\ub97c \uc704\ud55c \ubbf8\ub514\uc548 \ube14\ub7ec\ndenoised_image = cv2.medianBlur(image, 5)\n\n# \uc5bc\uad74 \uc778\uc2dd\nfaces = face_cascade.detectMultiScale(denoised_image, scaleFactor=1.1, minNeighbors=5)\n\n# \uc778\uc2dd\ub41c \uc5bc\uad74\uc5d0 \uc0ac\uac01\ud615 \uadf8\ub9ac\uae30\nfor (x, y, w, h) in faces:\n    cv2.rectangle(denoised_image, (x, y), (x + w, y + h), (255, 0, 0), 2)\n\n# \uacb0\uacfc \uc774\ubbf8\uc9c0 \uc2dc\uac01\ud654\nplt.figure(figsize=(8, 8))\nplt.imshow(denoised_image)\nplt.axis('off')\nplt.title('\ub178\uc774\uc988 \uc81c\uac70 \ubc0f \uc5bc\uad74 \uc778\uc2dd \uacb0\uacfc')\nplt.show()<\/code><\/pre>\n
5. \uacb0\ub860<\/h2>\n
OpenCV\ub97c \uc0ac\uc6a9\ud55c \uc774\ubbf8\uc9c0 \ud544\ud130\ub9c1\uc740 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc774\ubbf8\uc9c0 \ud544\ud130\ub9c1\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc0b4\ud3b4\ubcf4\uace0, \uc2e4\uc81c \ucf54\ub4dc \uc608\uc81c\ub97c \ud1b5\ud574 \ud544\ud130\ub9c1\uc758 \ud6a8\uacfc\ub97c \ube44\uad50\ud588\uc2b5\ub2c8\ub2e4. \ub610\ud55c \uc5bc\uad74 \uc778\uc2dd \uc608\uc81c\ub97c \ud1b5\ud574 \uc2e4\uc0dd\ud65c\uc5d0\uc11c OpenCV\uac00 \uc5b4\ub5bb\uac8c \ud65c\uc6a9\ub420 \uc218 \uc788\ub294\uc9c0\ub97c \ubcf4\uc5ec\ub4dc\ub838\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc55e\uc73c\ub85c \ub2e4\uc591\ud55c \uc774\ubbf8\uc9c0 \ucc98\ub9ac \uae30\uc220\uc744 \ud65c\uc6a9\ud558\uc5ec \ub354\uc6b1 \ud765\ubbf8\ub85c\uc6b4 \ud504\ub85c\uc81d\ud2b8\ub97c \ub9cc\ub4e4\uc5b4\ubcf4\uc2dc\uae38 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n
6. \ucc38\uace0\uc790\ub8cc<\/h2>\n