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app.py
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app.py
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import os
from flask import Flask, render_template, request, redirect, url_for
import cv2
from werkzeug.utils import secure_filename
app = Flask(__name__)
# Define folder to save uploaded images
UPLOAD_FOLDER = 'static/uploads/'
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
# Allowed file extensions
ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}
# Function to check if file extension is valid
def allowed_file(filename):
return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
# Route for home page
@app.route('/')
def index():
return render_template('index.html')
# Route to upload and process image
@app.route('/upload', methods=['POST'])
def upload_image():
if 'file' not in request.files:
return redirect(request.url)
file = request.files['file']
if file.filename == '':
return redirect(request.url)
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
filepath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
file.save(filepath)
# Process image with OpenCV
img = cv2.imread(filepath)
processed_image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# Save the processed image
processed_filename = 'processed_' + filename
processed_filepath = os.path.join(app.config['UPLOAD_FOLDER'], processed_filename)
cv2.imwrite(processed_filepath, processed_image)
# Redirect to display the uploaded and processed images
return render_template('index.html', uploaded_image=filename, processed_image=processed_filename)
return redirect(request.url)
if __name__ == '__main__':
app.run(debug=True)