0. 前言

设置窗口，打开单张图片，对图片进行高斯滤波、边缘锐化、中值滤波、旋转图片、灰度处理几个方面的图像增强处理，最后将处理过的图片保存在本地。
运行界面

对图片处理界面

1.源码

import os

import tkinter as tk
from PIL import Image, ImageTk
from tkinter.filedialog import askopenfilename
from scipy import ndimage


def act():
    print('Start open image')
    openfile()


# 高斯滤波
def img_gs():
    global cur_img, img_tag, photo
    print(cur_img)
    cur_img = ndimage.gaussian_filter(cur_img, sigma=1)
    cur_img = Image.fromarray(cur_img)
    photo = ImageTk.PhotoImage(cur_img)
    if img_tag is not None:
        canvas.delete(img_tag)
    img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
    canvas.image = photo
    canvas.update()


# 边缘锐化
def img_br():
    global cur_img, img_tag, photo
    blurred1 = ndimage.gaussian_filter(cur_img, sigma=1)
    blurred3 = ndimage.gaussian_filter(cur_img, sigma=3)
    cur_img = blurred3 + 6 * (blurred3 - blurred1)
    cur_img = Image.fromarray(cur_img)

    photo = ImageTk.PhotoImage(cur_img)
    if img_tag is not None:
        canvas.delete(img_tag)
    img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
    canvas.image = photo
    canvas.update()


# 打开文件
def openfile():
    global cur_img, photo, img_tag, canvas
    path_ = askopenfilename()
    path.set(path_)
    if path_ is not None:
        cur_img = Image.open(entry.get())
        image_x, image_y = cur_img.size
        photo = ImageTk.PhotoImage(cur_img)
        canvas = tk.Canvas(frame, width=image_x, height=image_y, bg="#ffd9b3")
        img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
        canvas.grid(row=0, column=0, columnspan=5)


# 中值滤波
def img_zz():
    global cur_img, img_tag, photo
    cur_img = ndimage.median_filter(cur_img, 7)  # 中值滤波
    cur_img = Image.fromarray(cur_img)

    photo = ImageTk.PhotoImage(cur_img)
    if img_tag is not None:
        canvas.delete(img_tag)
    img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
    canvas.image = photo
    canvas.update()


count = 1


def img_sv():
    global count
    if not os.path.exists('./img'):
        os.mkdir('./img')
    cur_img.save(f'./img/{count}.jpg')
    count += 1


def img_roll():
    global cur_img, img_tag, photo
    # angle = 45
    # cur_img=cur_img.rotate(angle,expand = 1)
    cur_img = cur_img.transpose(Image.FLIP_LEFT_RIGHT)  # 左右翻转
    photo = ImageTk.PhotoImage(cur_img, master=window)
    if img_tag is not None:
        canvas.delete(img_tag)
    img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
    canvas.image = photo
    canvas.update()


def img_gray():
    global cur_img, photo, img_tag
    cur_img = cur_img.convert('L')

    photo = ImageTk.PhotoImage(cur_img, master=window)
    if img_tag is not None:
        canvas.delete(img_tag)
    img_tag = canvas.create_image(0, 0, anchor='nw', image=photo)
    canvas.image = photo
    canvas.update()


if __name__ == '__main__':
    img_tag = None
    photo = None
    window = tk.Tk()  # Makes main window
    window.wm_title("主页")  # 标题
    window.config(background='#e6b3ff')  # 背景色
    window.geometry('800x500+300+200')  # 窗口大小以及距离屏幕桌上角的坐标
    # font = ('字体', '字号',‘样式')
    # 字体 Courier Times Helvetica
    # 样式 bold(粗体) 默认值为normal(正常粗细)
    #     italic(斜体) 默认值为roman(正常直立)
    #     underline(下划线) 默认值为false
    #     overstrike(删除线)) 默认值为false
    font1 = ("楷体", 12, 'bold')
    font2 = ("宋体", 12, "italic")
    font3 = ("楷体", 16, "underline")
    path = tk.StringVar()
    entry = tk.Entry(window, font=font2, width=100, textvariable=path,justify='center', state='readonly')
    entry.grid(row=0, column=0, columnspan=7)
    # cur_img = Image.open(path.get())

    button1 = tk.Button(window, text="打开图片", bd=2, command=act, font=font1)
    button1.grid(row=1, column=0)

    button2 = tk.Button(window, text="高斯滤波", bd=2, command=img_gs, font=font1)
    button2.grid(row=1, column=1)

    button3 = tk.Button(window, text="边缘锐化", bd=2, command=img_br, font=font1)
    button3.grid(row=1, column=2)

    button4 = tk.Button(window, text="中值滤波", bd=2, command=img_zz, font=font1)
    button4.grid(row=1, column=3)

    button5 = tk.Button(window, text='保存图片', bd=2, command=img_sv, font=font1)
    button5.grid(row=1, column=6)

    button6 = tk.Button(window, text="旋转图片", bd=2, command=img_roll, font=font1)
    button6.grid(row=1, column=4)

    button7 = tk.Button(window, text="灰度处理", bd=2, command=img_gray, font=font1)
    button7.grid(row=1, column=5)

    frame = tk.Frame()
    frame.grid(row=5, column=0, columnspan=7)

    canvas = tk.Canvas(frame, bg="#ffd9b3")

    window.mainloop()

2.使用手册

• 点击打开图片按钮，选中一张照片，打开；
• 最上面一行会显示图片在本地所在位置；
• 随机点击高斯滤波、中值滤波、边缘锐化、选择图片、灰度处理五个按钮，会对当前图片进行相应的处理；
• 处理完之后，可以点击保存图片按钮；
• 多次点击保存图片按钮会进行多次保存，保存的路径是./img下；
• 若保存图片的路径不存在，则会创建文件夹来保存处理过的图片。

3.代码解析

if __name__ == '__main__':
    img_tag = None
    photo = None
    window = tk.Tk()  # Makes main window
    window.wm_title("主页")  # 标题
    window.config(background='#e6b3ff')  # 背景色
    window.geometry('800x500+300+200')  # 窗口大小以及距离屏幕桌上角的坐标
    # font = ('字体', '字号',‘样式')
    # 字体 Courier Times Helvetica
    # 样式 bold(粗体) 默认值为normal(正常粗细)
    #     italic(斜体) 默认值为roman(正常直立)
    #     underline(下划线) 默认值为false
    #     overstrike(删除线)) 默认值为false
    font1 = ("楷体", 12, 'bold')
    font2 = ("宋体", 12, "italic")
    font3 = ("楷体", 16, "underline")
    path = tk.StringVar()
    entry = tk.Entry(window, font=font2, width=100, textvariable=path,justify='center', state='readonly')
    entry.grid(row=0, column=0, columnspan=7)
    # cur_img = Image.open(path.get())

    button1 = tk.Button(window, text="打开图片", bd=2, command=act, font=font1)
    button1.grid(row=1, column=0)

    button2 = tk.Button(window, text="高斯滤波", bd=2, command=img_gs, font=font1)
    button2.grid(row=1, column=1)

    button3 = tk.Button(window, text="边缘锐化", bd=2, command=img_br, font=font1)
    button3.grid(row=1, column=2)

    button4 = tk.Button(window, text="中值滤波", bd=2, command=img_zz, font=font1)
    button4.grid(row=1, column=3)

    button5 = tk.Button(window, text='保存图片', bd=2, command=img_sv, font=font1)
    button5.grid(row=1, column=6)

    button6 = tk.Button(window, text="旋转图片", bd=2, command=img_roll, font=font1)
    button6.grid(row=1, column=4)

    button7 = tk.Button(window, text="灰度处理", bd=2, command=img_gray, font=font1)
    button7.grid(row=1, column=5)

    frame = tk.Frame()
    frame.grid(row=5, column=0, columnspan=7)

    canvas = tk.Canvas(frame, bg="#ffd9b3")

    window.mainloop()

main函数主要是对窗口ui进行设计，canvas变量主要是将选择打开的图片在窗口ui上面进行显示画布；其中，
打开图片 ===> 对应 act函数 和 openfile函数
高斯滤波 ===> 对应 img_gs函数
边缘锐化 ===> 对应 img_br函数
中值滤波 ===> 对应 img_zz函数
旋转图片 ===> 对应 img_roll函数
灰度处理 ===> 对应 img_gray函数
保存图片 ===> 对应 img_sv函数
cur_img变量是指向当前图片，所以设置为全局变量，以便可以进行多重处理叠加；当然，代码还存在一些问题，大家都可以指出。

完成+1 …