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app.py
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app.py
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import numpy as np
from PIL import Image
import image_processing
import os
from flask import Flask, render_template, request, make_response
from datetime import datetime
from functools import wraps, update_wrapper
from shutil import copyfile
app = Flask(__name__)
APP_ROOT = os.path.dirname(os.path.abspath(__file__))
def nocache(view):
@wraps(view)
def no_cache(*args, **kwargs):
response = make_response(view(*args, **kwargs))
response.headers['Last-Modified'] = datetime.now()
response.headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0'
response.headers['Pragma'] = 'no-cache'
response.headers['Expires'] = '-1'
return response
return update_wrapper(no_cache, view)
@app.route("/index")
@app.route("/")
@nocache
def index():
return render_template("home.html", file_path="img/image_here.jpg")
@app.route("/about")
@nocache
def about():
return render_template('about.html')
@app.after_request
def add_header(r):
"""
Add headers to both force latest IE rendering engine or Chrome Frame,
and also to cache the rendered page for 10 minutes.
"""
r.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
r.headers["Pragma"] = "no-cache"
r.headers["Expires"] = "0"
r.headers['Cache-Control'] = 'public, max-age=0'
return r
@app.route("/upload", methods=["POST"])
@nocache
def upload():
target = os.path.join(APP_ROOT, "static/img")
if not os.path.isdir(target):
if os.name == 'nt':
os.makedirs(target)
else:
os.mkdir(target)
for file in request.files.getlist("file"):
file.save("static/img/img_now.jpg")
copyfile("static/img/img_now.jpg", "static/img/img_normal.jpg")
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/normal", methods=["POST"])
@nocache
def normal():
copyfile("static/img/img_normal.jpg", "static/img/img_now.jpg")
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/grayscale", methods=["POST"])
@nocache
def grayscale():
image_processing.grayscale()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/zoomin", methods=["POST"])
@nocache
def zoomin():
image_processing.zoomin()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/zoomout", methods=["POST"])
@nocache
def zoomout():
image_processing.zoomout()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/move_left", methods=["POST"])
@nocache
def move_left():
image_processing.move_left()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/move_right", methods=["POST"])
@nocache
def move_right():
image_processing.move_right()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/move_up", methods=["POST"])
@nocache
def move_up():
image_processing.move_up()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/move_down", methods=["POST"])
@nocache
def move_down():
image_processing.move_down()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/brightness_addition", methods=["POST"])
@nocache
def brightness_addition():
image_processing.brightness_addition()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/brightness_substraction", methods=["POST"])
@nocache
def brightness_substraction():
image_processing.brightness_substraction()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/brightness_multiplication", methods=["POST"])
@nocache
def brightness_multiplication():
image_processing.brightness_multiplication()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/brightness_division", methods=["POST"])
@nocache
def brightness_division():
image_processing.brightness_division()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/histogram_equalizer", methods=["POST"])
@nocache
def histogram_equalizer():
image_processing.histogram_equalizer()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/edge_detection", methods=["POST"])
@nocache
def edge_detection():
image_processing.edge_detection()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/blur", methods=["POST"])
@nocache
def blur():
image_processing.blur()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/sharpening", methods=["POST"])
@nocache
def sharpening():
image_processing.sharpening()
return render_template("uploaded.html", file_path="img/img_now.jpg")
@app.route("/histogram_rgb", methods=["POST"])
@nocache
def histogram_rgb():
image_processing.histogram_rgb()
if image_processing.is_grey_scale("static/img/img_now.jpg"):
return render_template("histogram.html", file_paths=["img/grey_histogram.jpg"])
else:
return render_template("histogram.html", file_paths=["img/red_histogram.jpg", "img/green_histogram.jpg", "img/blue_histogram.jpg"])
@app.route("/thresholding", methods=["POST"])
@nocache
def thresholding():
lower_thres = int(request.form['lower_thres'])
upper_thres = int(request.form['upper_thres'])
image_processing.threshold(lower_thres, upper_thres)
return render_template("uploaded.html", file_path="img/img_now.jpg")
if __name__ == '__main__':
app.run(debug=True, host="0.0.0.0")