Python 实现中值滤波、均值滤波

Python图形界面实现中值滤波、均值滤波

Lena椒盐噪声图片：

# -*- coding: utf-8 -*-"""Created on Sat Oct 14 22:16:47 2017@author: Don"""from tkinter import *from skimage import ioimport numpy as npim=io.imread('lena_sp.jpg', as_grey=True)im_copy_med = io.imread('lena_sp.jpg', as_grey=True)im_copy_mea = io.imread('lena_sp.jpg', as_grey=True)#io.imshow(im)for i in range(0,im.shape[0]):    for j in range(0,im.shape[1]):        im_copy_med[i][j]=im[i][j]        im_copy_mea[i][j]=im[i][j]#uiroot = Tk()root.title("lena")root.geometry('300x200')medL = Label(root, text="中值滤波：")medL.pack()med_text = StringVar()med = Entry(root, textvariable = med_text)med_text.set("")med.pack()meaL = Label(root, text="均值滤波：")meaL.pack()mea_text = StringVar()mea = Entry(root, textvariable = mea_text)mea_text.set("")mea.pack()def m_filter(x, y, step):    sum_s=[]    for k in range(-int(step/2),int(step/2)+1):        for m in range(-int(step/2),int(step/2)+1):            sum_s.append(im[x+k][y+m])    sum_s.sort()    return sum_s[(int(step*step/2)+1)]def mean_filter(x, y, step):    sum_s = 0    for k in range(-int(step/2),int(step/2)+1):        for m in range(-int(step/2),int(step/2)+1):            sum_s += im[x+k][y+m] / (step*step)    return sum_sdef on_click():    if(med_text):        medStep = int(med_text.get())        for i in range(int(medStep/2),im.shape[0]-int(medStep/2)):            for j in range(int(medStep/2),im.shape[1]-int(medStep/2)):                im_copy_med[i][j] = m_filter(i, j, medStep)    if(mea_text):        meaStep = int(mea_text.get())        for i in range(int(meaStep/2),im.shape[0]-int(meaStep/2)):            for j in range(int(meaStep/2),im.shape[1]-int(meaStep/2)):                im_copy_mea[i][j] = mean_filter(i, j, meaStep)    io.imshow(im_copy_med)    io.imsave(str(medStep) + 'med.jpg', im_copy_med)    io.imshow(im_copy_mea)    io.imsave(str(meaStep) + 'mea.jpg', im_copy_mea)Button(root, text="filterGo", command = on_click).pack()root.mainloop()

运行结果截图：