import cv2
import numpy as np
import random
import tkinter
import math
def rgb2gray(rgb):
gray = np.zeros((rgb.shape[0],rgb.shape[1],1),np.uint8) # 建立影象變數，防止gray的改變導致如果把原圖的改變
for i in range(rgb.shape[0]):
for j in range(rgb.shape[1]):
gray[i,j] = 0.299 * rgb[i, j, 0] + 0.587 * rgb[i, j, 1] + 0.114 * rgb[i, j, 2]
return gray
def gauss_random(mu,sigem): # x是隨機變數，mu是均值，sigema是方差
x = random.uniform(mu,sigem*sigem)
t1 = (x-mu)*(x-mu)
t2 = 2*sigem*sigem
t3 = math.exp(-(t1/t2))
t4 = sigem*math.sqrt(2*math.pi)
f = 1/t4 * t3
return f
def gauss(gray,m,s,k): #高斯雜訊就是雜訊是按照高斯分布，分布在影象上的，是黑色的
gauss_p = gray*1
for i in range(gauss_p.shape[0]):
for j in range(gauss_p.shape[1]):
temp = gauss_p[i,j] + gauss_random(m,s)*k
if temp < 0:
temp = 0
elif temp > 255:
temp = 255
gauss_p[i,j] = temp
return gauss_p
def salt(gray):
salt_p = gray*1
for i in range(6000):
addx = random.randint(0, salt_p.shape[0] - 1) #產生隨機整數 用於確定x和y的位置，即畫素的位置
addy = random.randint(0, salt_p.shape[1] - 1)
if random.randint(0,1) == 0 :
salt_p[addx,addy] = 0
else:
salt_p[addx,addy] = 255
return salt_p
def img(m,s,k):
m=int(m)
s=int(s)
k = int(k)
img = cv2.imread("d:/5.rgb")
gray = rgb2gray(img)
print(gray.shape[0],gray.shape[1])
salt = salt(gray)
gauss = gauss(gray,m,s,k)
cv2.imshow("gray",gray)
cv2.imshow("salt",salt)
cv2.imshow("gauss",gauss)
cv2.waitkey(0)
cv2.destroyallwindows()
def input():
mu = enters1.get()
sigem = enters2.get()
k = enters3.get()
img(mu,sigem,k)
root = tkinter.tk()
s1 = tkinter.stringvar(value='')
s2 = tkinter.stringvar(value='')
s3 = tkinter.stringvar(value='')
labels1 = tkinter.label(root,text = 'μ:',justify = tkinter.right,width = 80)
labels1.place(x = 10,y = 5,width = 80,height = 20)
enters1 = tkinter.entry(root,width = 80,textvariable = s1)
enters1.place(x = 100,y = 5,width = 80,height = 20)
labels2 = tkinter.label(root,text = 'σ:',justify = tkinter.right,width = 80)
labels2.place(x = 10,y = 30,width = 80,height = 20)
enters2 = tkinter.entry(root,width = 80,textvariable = s2)
enters2.place(x = 100,y =30 ,width = 80,height = 20)
labels3 = tkinter.label(root,text = 'k :',justify = tkinter.right,width = 80)
labels3.place(x = 10,y = 55,width = 80,height = 20)
enters3 = tkinter.entry(root,width = 80,textvariable = s3)
enters3.place(x = 100,y = 55,width = 80,height = 20)
buttonok = tkinter.button(root,text = '確定',command = input)
buttonok.place(x=90,y=90,width = 50,height = 30)
root.mainloop()
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