- \n
- \u60a8\u7684\u8ba1\u7b97\u673a\u4e0a\u5df2\u5b89\u88c5 python 3.x\u3002<\/li>\n
- python \u7f16\u7a0b\u57fa\u7840\u77e5\u8bc6\u3002<\/li>\n
- \u719f\u6089 html \u548c css \u4f1a\u6709\u6240\u5e2e\u52a9\uff0c\u4f46\u4e0d\u662f\u5fc5\u9700\u7684\u3002<\/li>\n<\/ul>\n
\u6253\u5f00\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u5e76\u8fd0\u884c\uff1a<\/p>\n
pip install opencv-python numpy flask\n<\/pre>\n
mkdir edge_detection_app\ncd edge_detection_app\n<\/pre>\n
sobel \u7b97\u5b50\u8ba1\u7b97\u56fe\u50cf\u5f3a\u5ea6\u7684\u68af\u5ea6\uff0c\u5f3a\u8c03\u8fb9\u7f18\u3002<\/p>\n
\u4ee3\u7801\u5b9e\u73b0\uff1a<\/strong><\/p>\n
import cv2\n\n# load the image in grayscale\nimage = cv2.imread('input_image.jpg', cv2.imread_grayscale)\nif image is none:\n print(\"error loading image\")\n exit()\n\n# apply sobel operator\nsobelx = cv2.sobel(image, cv2.cv_64f, 1, 0, ksize=5) # horizontal edges\nsobely = cv2.sobel(image, cv2.cv_64f, 0, 1, ksize=5) # vertical edges\n<\/pre>\ncanny \u8fb9\u7f18\u68c0\u6d4b\u5668\u662f\u4e00\u79cd\u7528\u4e8e\u68c0\u6d4b\u8fb9\u7f18\u7684\u591a\u7ea7\u7b97\u6cd5\u3002<\/p>\n
\u4ee3\u7801\u5b9e\u73b0\uff1a<\/strong><\/p>\n
# apply canny edge detector\nedges = cv2.canny(image, threshold1=100, threshold2=200)\n<\/pre>\n
\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aapp.py\u7684\u6587\u4ef6\uff1a<\/p>\n
from flask import flask, request, render_template, redirect, url_for\nimport cv2\nimport os\n\napp = flask(__name__)\n\nupload_folder = 'static\/uploads\/'\noutput_folder = 'static\/outputs\/'\n\napp.config['upload_folder'] = upload_folder\napp.config['output_folder'] = output_folder\n\n# create directories if they don't exist\nos.makedirs(upload_folder, exist_ok=true)\nos.makedirs(output_folder, exist_ok=true)\n<\/pre>\n
\u4e0a\u4f20\u8def\u7ebf\uff1a<\/strong><\/p>\n
@app.route('\/', methods=['get', 'post'])\ndef upload_image():\n if request.method == 'post':\n file = request.files.get('file')\n if not file or file.filename == '':\n return 'no file selected', 400\n filepath = os.path.join(app.config['upload_folder'], file.filename)\n file.save(filepath)\n process_image(file.filename)\n return redirect(url_for('display_result', filename=file.filename))\n return render_template('upload.html')\n<\/pre>\n\u5904\u7406\u56fe\u50cf\u51fd\u6570\uff1a<\/strong><\/p>\n
def process_image(filename):\n image_path = os.path.join(app.config['upload_folder'], filename)\n image = cv2.imread(image_path, cv2.imread_grayscale)\n\n # apply edge detection\n sobelx = cv2.sobel(image, cv2.cv_64f, 1, 0, ksize=5)\n edges = cv2.canny(image, 100, 200)\n\n # save outputs\n cv2.imwrite(os.path.join(app.config['output_folder'], 'sobelx_' + filename), sobelx)\n cv2.imwrite(os.path.join(app.config['output_folder'], 'edges_' + filename), edges)\n<\/pre>\n
\u7ed3\u679c\u8def\u7ebf\uff1a<\/strong><\/p>\n
@app.route('\/result\/<filename>')\ndef display_result(filename):\n return render_template('result.html',\n original_image='uploads\/' + filename,\n sobelx_image='outputs\/sobelx_' + filename,\n edges_image='outputs\/edges_' + filename)\n<\/pre>\nif __name__ == '__main__':\n app.run(debug=true)\n<\/pre>\n
\u5728 html \u6a21\u677f\u4e2d\u5305\u542b bootstrap cdn \u4ee5\u8fdb\u884c\u6837\u5f0f\u8bbe\u7f6e\u3002<\/p>\n
\u521b\u5efatemplates\u76ee\u5f55\u5e76\u6dfb\u52a0upload.html\uff1a<\/p>\n
<!doctype html>\n<html lang=\"en\">\n<head>\n <meta charset=\"utf-8\">\n <title>edge detection app<\/title>\n <!-- bootstrap css cdn -->\n <link rel=\"stylesheet\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/4.5.2\/css\/bootstrap.min.css\">\n<\/head>\n<body>\n <div class=\"container mt-5\">\n <h1 class=\"text-center mb-4\">upload an image for edge detection<\/h1>\n <div class=\"row justify-content-center\">\n <div class=\"col-md-6\">\n <form method=\"post\" enctype=\"multipart\/form-data\" class=\"border p-4\">\n <div class=\"form-group\">\n <label for=\"file\">choose an image:<\/label>\n <input type=\"file\" name=\"file\" accept=\"image\/*\" required class=\"form-control-file\" id=\"file\">\n <\/div>\n <button type=\"submit\" class=\"btn btn-primary btn-block\">upload and process<\/button>\n <\/form>\n <\/div>\n <\/div>\n <\/div>\n<\/body>\n<\/html>\n<\/pre>\n
\u5728templates\u76ee\u5f55\u4e0b\u521b\u5efaresult.html\uff1a<\/p>\n
<!doctype html>\n<html lang=\"en\">\n<head>\n <meta charset=\"utf-8\">\n <title>edge detection results<\/title>\n <!-- bootstrap css cdn -->\n <link rel=\"stylesheet\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/4.5.2\/css\/bootstrap.min.css\">\n<\/head>\n<body>\n <div class=\"container mt-5\">\n <h1 class=\"text-center mb-5\">edge detection results<\/h1>\n <div class=\"row\">\n <div class=\"col-md-6 mb-4\">\n <h4 class=\"text-center\">original image<\/h4>\n <img src=\"{{ url_for('static', filename=original_image) }}\" alt=\"original image\" class=\"img-fluid rounded mx-auto d-block\">\n <\/div>\n <div class=\"col-md-6 mb-4\">\n <h4 class=\"text-center\">sobel x<\/h4>\n <img src=\"{{ url_for('static', filename=sobelx_image) }}\" alt=\"sobel x\" class=\"img-fluid rounded mx-auto d-block\">\n <\/div>\n <div class=\"col-md-6 mb-4\">\n <h4 class=\"text-center\">canny edges<\/h4>\n <img src=\"{{ url_for('static', filename=edges_image) }}\" alt=\"canny edges\" class=\"img-fluid rounded mx-auto d-block\">\n <\/div>\n <\/div>\n <div class=\"text-center mt-4\">\n <a href=\"{{ url_for('upload_image') }}\" class=\"btn btn-secondary\">process another image<\/a>\n <\/div>\n <\/div>\n<\/body>\n<\/html>\n<\/pre>\npython app.py\n<\/pre>\n
\u6253\u5f00\u7f51\u7edc\u6d4f\u89c8\u5668\u5e76\u5bfc\u822a\u81f3 http:\/\/localhost:5000\u3002<\/p>\n
- \n
- \u4e0a\u4f20\u56fe\u50cf\u5e76\u5355\u51fb\u201c\u4e0a\u4f20\u5e76\u5904\u7406\u201d\u3002<\/li>\n
- \u67e5\u770b\u8fb9\u7f18\u68c0\u6d4b\u7ed3\u679c\u3002<\/li>\n<\/ul>\n
![](\"https:\/\/www.17golang.com\/uploads\/20241108\/1731026757672d5f45ec385.jpg\")
<\/p>\n\u6211\u4eec\u6784\u5efa\u4e86\u4e00\u4e2a\u7b80\u5355\u7684 web \u5e94\u7528\u7a0b\u5e8f\uff0c\u4f7f\u7528 sobel \u7b97\u5b50\u548c canny \u8fb9\u7f18\u68c0\u6d4b\u5668\u6267\u884c\u8fb9\u7f18\u68c0\u6d4b\u3002\u901a\u8fc7\u96c6\u6210 python\u3001opencv\u3001flask \u548c bootstrap\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u4ea4\u4e92\u5f0f\u5de5\u5177\uff0c\u5141\u8bb8\u7528\u6237\u4e0a\u4f20\u56fe\u50cf\u5e76\u67e5\u770b\u8fb9\u7f18\u68c0\u6d4b\u7ed3\u679c\u3002<\/p>\n
\u540e\u7eed\u6b65\u9aa4<\/p>\n
- \n
- \u589e\u5f3a\u5e94\u7528\u7a0b\u5e8f\uff1a\u6dfb\u52a0\u66f4\u591a\u8fb9\u7f18\u68c0\u6d4b\u9009\u9879\u6216\u5141\u8bb8\u53c2\u6570\u8c03\u6574\u3002<\/li>\n
- \u6539\u8fdbui\uff1a\u878d\u5165\u66f4\u591abootstrap\u7ec4\u4ef6\uff0c\u63d0\u4f9b\u66f4\u597d\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n
- \u8fdb\u4e00\u6b65\u63a2\u7d22\uff1a\u5728 heroku \u6216 aws \u7b49\u5176\u4ed6\u5e73\u53f0\u4e0a\u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n
github \u5b58\u50a8\u5e93\uff1a\u8fb9\u7f18\u68c0\u6d4b\u5e94\u7528<\/strong><\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u4f7f\u7528 Python \u548c OpenCV \u5b9e\u73b0\u8fb9\u7f18\u68c0\u6d4b\uff1a\u5206\u6b65\u6307\u5357\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n
\u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528 Python \u548c Open...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204449","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204449"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204449\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}