{"id":1713,"date":"2022-09-17T18:41:19","date_gmt":"2022-09-17T09:41:19","guid":{"rendered":"https:\/\/extralab.org\/wp\/?p=1713"},"modified":"2022-09-17T18:43:08","modified_gmt":"2022-09-17T09:43:08","slug":"python-opencv2-image-data-show","status":"publish","type":"post","link":"https:\/\/extralab.org\/wp\/blog\/2022\/09\/17\/python-opencv2-image-data-show\/","title":{"rendered":"\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2)"},"content":{"rendered":"

\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2)<\/h1>\n

Python-OpenCV<\/h2>\n

pip install python-opencv<\/h4>\n

python\u7248\u306eopencv\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304a\u304f\u3002<\/p>\n

\u753b\u50cf<\/h2>\n

\u753b\u50cf\u3092\u8868\u793a\u3059\u308b\u3002<\/p>\n

import cv2\r\n\r\n# \u753b\u50cf\u9078\u629e\r\nimg = cv2.imread('sample.jpg')\r\n\r\n# \u753b\u50cf\u8868\u793a\r\ncv2.imshow('OpenCV', img)  # \u8868\u793a\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()  # \u9589\u3058\u308b<\/pre>\n
\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u78ba\u8a8d<\/h2>\n
\u4eca\u56de\u306f\u3001\u4e0b\u8a18\u306e\u753b\u50cf(\u6a2a\u00d7\u7e26\uff1a1280\u00d7887)\u3092\u4f7f\u7528\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\"pycv_sample00\"\n
\u6ce8\u610f\u70b9\u3068\u3057\u3066\u3001OpenCV\u3067\u753b\u50cf\u3092\u6271\u3046\u5834\u5408\u3001\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u8868\u793a\u306f\u3001\u7e26\u00d7\u6a2a\u306e\u9806\u756a\u3067\u8868\u8a18\u3057\u307e\u3059\u3002<\/p>\n
\u753b\u50cf\u306e1\u753b\u7d20(pixel)\u306eBGR\u60c5\u5831\u78ba\u8a8d\u306f\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u914d\u5217\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b\u5f62\u3067\u3001\u3067\u304d\u307e\u3059\u3002<\/p>\n
print(img[0, 0])  # \u753b\u50cf\u306e\u5de6\u4e0a\r\nprint(img[886, 0])  # \u753b\u50cf\u306e\u5de6\u4e0b\r\nprint(img[0, 1279])  # \u753b\u50cf\u306e\u53f3\u4e0a\r\nprint(img[886, 1279])  # \u753b\u50cf\u306e\u53f3\u4e0b\r\n# --\u51fa\u529b\u7d50\u679c--\r\n# [12 38 68]\r\n# [ 2  2 16]\r\n# [154 153 162]\r\n# [ 6  9 30]<\/pre>\n\"image_cv2_001\"\n
\u753b\u50cf\u30b5\u30a4\u30ba\u5909\u66f4<\/h2>\n
\u307e\u305a\u306f\u3001\u753b\u50cf\u306ewidth\u3068height\u306e\u53d6\u5f97\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
# \u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\r\nheight, width, channels = img.shape\r\nprint(width, height)\r\n\r\n#--\u51fa\u529b\u7d50\u679c--\r\n# 1280 887<\/pre>\n
\u753b\u50cf\u306e\u7e2e\u5c0f\u3068\u62e1\u5927\u3059\u308b\u65b9\u6cd5\u3002<\/p>\n
# \u753b\u50cf\u306e\u30b5\u30a4\u30ba\u5909\u66f4(pixel\u6570\u5024\u6307\u5b9a)\r\n# \u30b5\u30a4\u30ba\u306e\u5f62\u72b6\u306f\u3001\u7e26\u00d7\u6a2a\u3060\u304c\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u6642\u306f\u3001\u6a2a\u00d7\u7e26\u3067\u6307\u5b9a\u3059\u308b\u5f62\u3068\u306a\u308b\u3002\r\nimg_resized1 = cv2.resize(img, (500, 300))\r\nprint(img_resized1.shape)\r\ncv2.imshow(\"sample001\", img_resized1)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()\r\n\r\n# \u753b\u50cf\u306e\u30b5\u30a4\u30ba\u5909\u66f4(\u500d\u7387\u6307\u5b9a) 1\u500d\u21d21.0\u30001\/10\u500d\u21d20.1\u30001.25\u500d\u21d21.25\r\n# \u30b5\u30a4\u30ba\u306e\u5f62\u72b6\u306f\u3001\u7e26\u00d7\u6a2a\u3060\u304c\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u6642\u306f\u3001\u6a2a\u00d7\u7e26\u3067\u6307\u5b9a\u3059\u308b\u5f62\u3068\u306a\u308b\u3002\r\nimg_resized2 = cv2.resize(img, None, fx=0.1, fy=0.1)  # \u7e2e\u5c0f\r\n# img_resized2 = cv2.resize(img, None, fx=1.25, fy=1.25)  # \u62e1\u5927\r\nprint(img_resized2.shape)\r\ncv2.imshow(\"sample001\", img_resized2)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()<\/pre>\n
\u753b\u50cf\u306e\u56de\u8ee2<\/h2>\n
\u753b\u50cf\u3092\u56de\u8ee2\u3059\u308b\u65b9\u6cd5\u3002<\/p>\n
# \u753b\u50cf\u306e\u56de\u8ee290\u5ea6\r\nimg_rotated = cv2.rotate(img, cv2.ROTATE_90_CLOCKWISE)\r\nprint(img_rotated.shape)\r\ncv2.imshow(\"sample004\", img_rotated)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()\r\n\r\n# \u753b\u50cf\u306e45\u5ea6\u56de\u8ee2\r\n# \u753b\u50cf\u306e\u4e2d\u5fc3\u3092\u6c42\u3081\u308b\r\nheight, width = img.shape[:2]\r\ncenter = (int(width\/2), int(height\/2))\r\n# \u753b\u50cf\u309245\u5ea6\u56de\u8ee2\u3055\u305b\u308b\r\nrot = cv2.getRotationMatrix2D(center, 45, 1)\r\nimg_rotated = cv2.warpAffine(img, rot, (width,height))\r\nprint(img_rotated.shape)\r\ncv2.imshow(\"sample005\", img_rotated)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()\r\n\r\n# \u753b\u50cf\u306e\u4e0a\u4e0b\u5de6\u53f3\u53cd\u8ee2\r\n# \u4e0a\u4e0b\u53cd\u8ee2\r\nimg_reverse =cv2.flip(img, 0)\r\nprint(img_reverse.shape)\r\ncv2.imshow(\"sample006\", img_reverse)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()\r\n\r\n# \u5de6\u53f3\u53cd\u8ee2\r\nimg_reverse =cv2.flip(img, 1)\r\nprint(img_reverse.shape)\r\ncv2.imshow(\"sample007\", img_reverse)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()\r\n\r\n# \u4e0a\u4e0b\u5de6\u53f3\u53cd\u8ee2\r\nimg_reverse =cv2.flip(img, -1)\r\nprint(img_reverse.shape)\r\ncv2.imshow(\"sample008\", img_reverse)\r\ncv2.waitKey(0)\r\ncv2.destroyAllWindows()<\/pre>\n
 <\/p>\n\"\"\"\"\"\"\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2) Python-OpenCV pip install python-opencv python\u7248\u306eopencv\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057…<\/p>\n","protected":false},"author":1,"featured_media":1730,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[174,44],"tags":[278,365,366,277,367,175],"class_list":["post-1713","post","type-post","status-publish","format-standard","has-post-thumbnail","category-python","category-programing","tag-cv2","tag-img","tag-imgshow","tag-opencv","tag-pixel","tag-python","article cf"],"yoast_head":"\n\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2) - Extra-Lab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/extralab.org\/wp\/blog\/2022\/09\/17\/python-opencv2-image-data-show\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2) - Extra-Lab\" \/>\n<meta property=\"og:description\" content=\"\u3010python\u3011OpenCV\u753b\u50cf\u51e6\u7406\u65b9\u6cd5(\u753b\u50cf\u8868\u793a\u3001\u30c7\u30fc\u30bf\u683c\u7d0d\u3001\u30b5\u30a4\u30ba\u5909\u66f4\u3001\u56de\u8ee2) Python-OpenCV pip install python-opencv python\u7248\u306eopencv\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extralab.org\/wp\/blog\/2022\/09\/17\/python-opencv2-image-data-show\/\" \/>\n<meta property=\"og:site_name\" content=\"Extra-Lab\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-17T09:41:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-17T09:43:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/extralab.org\/wp\/wp-content\/uploads\/2022\/09\/pycv2_eye_img001.png\" \/>\n\t<meta property=\"og:image:width\" content=\"859\" \/>\n\t<meta property=\"og:image:height\" content=\"596\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" 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