unsharp_mask

import cv2
from tkinter import *
import matplotlib

matplotlib.use('TkAgg')

import numpy as np
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure

from tkinter import filedialog
from PIL import Image, ImageTk


class unsharp_highboost:
    path = '/home/cloud/Desktop/moon.jpg'

    def __init__(self, master):

        self.frame1 = Frame(master)
        self.frame2 = Frame(master)
        hbtn = Button(self.frame2, text="OPEN IMAGE", command=lambda: self.button_click(master))
        hbtn.pack(fill="none", expand=True)

        self.initUI(master)

    def initUI(self, master):
        self.frame1.grid(row=0, column=0)
        self.frame2.grid(row=7, column=0)

        if len(unsharp_highboost.path) > 0:
            img = cv2.imread(unsharp_highboost.path)
            img = cv2.resize(img, (0, 0), fx=0.25, fy=0.25)
            blur = cv2.GaussianBlur(img, (5, 5), 0)
            mask = img - blur
            k = 2
            new_weighted = img + k * mask

            fig = Figure(figsize=(8, 8))
            a = fig.add_subplot(231)
            a.imshow(img, cmap='gray')
            a.set_title("Original Image")
            b = fig.add_subplot(232)
            b.imshow(blur, cmap='gray')
            b.set_title("Average Filter - blur")
            c = fig.add_subplot(233)
            c.imshow(mask, cmap='gray')
            c.set_title("Mask")
            d = fig.add_subplot(235)
            d.imshow(new_weighted, cmap='gray')
            d.set_title("k = 2")

            k = 0.5
            new_weighted = img + k * mask
            new_weighted.astype(int)
            new_weighted = (new_weighted * 255 / np.max(new_weighted)).astype('uint8')

            e = fig.add_subplot(234)
            e.imshow(new_weighted, cmap='gray')
            e.set_title("k=0.5")
            canvas = FigureCanvasTkAgg(fig, self.frame1)
            canvas.get_tk_widget().grid(row=1, column=0, columnspan=4, rowspan=8)
            canvas.draw()

    def button_click(self, master):
        unsharp_highboost.path = filedialog.askopenfilename(filetypes=[("Image File", '.jpg')])
        self.initUI(master)


def main():
    root = Tk()
    root.title("Unsharp masking and Highboost filter")
    unsharp_highboost(root)
    root.mainloop()


if __name__ == '__main__':
    main()