tkinter 实现选择路径（有解决中文路径、中文档名问题）打开显示照片，可选择 cv2.COLOR_ 模式并用 for loop 计算照片直方图 histogram

import cv2
import numpy as np
from tkinter import filedialog
import tkinter as tk
from PIL import ImageTk, Image
from matplotlib import pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
root = tk.Tk()
radioValue = tk.IntVar()
mediaFrame = tk.Frame(root).pack()
"""
创建 tkinker label
"""
media = tk.Label(mediaFrame)
media.pack()
fig = plt.figure()
"""
创建初始画布
"""
f_plot =fig.add_subplot(111)
"""
创建 histogram 画布
"""
canva = FigureCanvasTkAgg(fig,root)
canva.get_tk_widget().pack(side='right')
def cv_imread(filePath):
    cv_img=cv2.imdecode(np.fromfile(filePath,dtype=np.uint8),-1)
    return cv_img

def validate():
    value = radioValue.get()
    global mode
    '''
    1 cv2.COLOR_BGR2RGB
    2 cv2.COLOR_BGR2HSV
    3 cv2.COLOR_BGR2HLS
    4 cv2.COLOR_BGR2Lab
    5 cv2.COLOR_BGR2Luv
    6 cv2.COLOR_BGR2YCrCb
    7 cv2.COLOR_BGR2XYZ
    '''
    if (value == 1):
        mode = cv2.COLOR_BGR2RGB
    if( value == 2):
        mode = cv2.COLOR_BGR2HSV
    if( value == 3):
        mode = cv2.COLOR_BGR2HLS
    if( value == 4):
        mode = cv2.COLOR_BGR2Lab
    if( value == 5):
        mode = cv2.COLOR_BGR2Luv
    if( value == 6):
        mode = cv2.COLOR_BGR2YCrCb
    if( value == 7):
        mode = cv2.COLOR_BGR2XYZ
def oas():
    plt.cla()
    global mode
    sfname = filedialog.askopenfilename(title='选择',
                                        filetypes=[
                                            ('All Files','*'),
                                            ("jpeg files","*.jpg"),
                                            ("png files","*.png"),
                                            ("gif files","*.gif")])
    
    cv2image = cv2.cvtColor(cv2.resize(cv_imread(sfname),(500,250)),mode)
    size = cv2image.shape
    (high,width,path) = size
    y = np.zeros((256))
    for i in range(0,high):
      for j in range(0,width):
         y[cv2image[i,j]] += 1
    x = np.arange(0,256)
    plt.bar(x,y,color="gray",align="center")
    img = Image.fromarray(cv2image)
    imgtk = ImageTk.PhotoImage(image=img)
    media.imgtk = imgtk
    media.configure(image=imgtk)
    canva.draw()

r1 = tk.Radiobutton(root,text = " bgr 、 rgb 互转模式",variable=radioValue, value=1,command = validate).pack()
r2 = tk.Radiobutton(root,text = " hsv ",variable=radioValue, value=2,command = validate).pack()
r3 = tk.Radiobutton(root,text = " hls ",variable=radioValue, value=3,command = validate).pack()
r4 = tk.Radiobutton(root,text = " lab ",variable=radioValue, value=4,command = validate).pack()
r5 = tk.Radiobutton(root,text = " luv ",variable=radioValue, value=5,command = validate).pack()
r6 = tk.Radiobutton(root,text = " ycrcb ",variable=radioValue, value=6,command = validate).pack()
r7 = tk.Radiobutton(root,text = " xyz ",variable=radioValue, value=7,command = validate).pack()
b1 = tk.Button(root, text="打开",command = oas).pack()
root.mainloop()