色域调整

import tkinter as tk
import cv2 as cv
from tkinter import messagebox
import  numpy
inpath = 'InImage/1.png'
outpath = 'OutImage/R.png'

i1 = []


def cutphoto(*args):
    global i1
    try:
        iamge = cv.imread(inpath, 0)  # 读取图片
        image = cv.resize(iamge,args) #设置图片大小
        ret,i1 = cv.threshold(image,int(scale.get()),255,cv.THRESH_TRUNC) #调整色域
        cv.namedWindow('Image', cv.WINDOW_AUTOSIZE)  # 创建窗口名
        cv.imshow("Image",i1)  # 显示图片
    except Exception as e:
        print(e)


def RGB(*args):
    if ipt1.get() and ipt2.get():
        w = int(ipt1.get())
        h = int(ipt2.get())
        if w > 2000 or h > 2000:
            messagebox.showinfo(title='提示',message='设置图片过大')
        else:
            cutphoto(w,h)
    else:
        w = 500
        h = 500
        cutphoto(w, h)

def savepr():
    RGB()
    cv.imwrite(outpath, i1)
    tk.messagebox.showinfo(title='提示',message='保存成功')

parent = tk.Tk()
parent.title("RGB色域分解")
# 设置窗口大小、居中
width = 461
height = 387
screenwidth = parent.winfo_screenwidth()
screenheight = parent.winfo_screenheight()
geometry = '%dx%d+%d+%d' % (width, height, (screenwidth - width) / 2, (screenheight - height) / 2)
parent.geometry(geometry)

parent.resizable(width=False, height=False)

label1 = tk.Label(parent, text="图片大小设置", anchor="center", )
label1.place(x=161, y=28, width=129, height=30)

label2 = tk.Label(parent, text="长度：", anchor="center", )
label2.place(x=96, y=101, width=50, height=30)


label3 = tk.Label(parent, text="宽度：", anchor="center", )
label3.place(x=95, y=162, width=50, height=30)

label4 = tk.Label(parent, text="px", anchor="center", )
label4.place(x=313, y=98, width=50, height=30)

label5 = tk.Label(parent, text="px", anchor="center", )
label5.place(x=313, y=165, width=50, height=30)

ipt1 = tk.Entry(parent, )
ipt1.place(x=165, y=97, width=150, height=30)


ipt2 = tk.Entry(parent, )
ipt2.place(x=165, y=163, width=150, height=30)

scale = tk.Scale(parent, to=255, orient=tk.HORIZONTAL, command=RGB)
scale.set(127)
scale.place(x=110, y=226, width=241, height=30)

btn = tk.Button(parent, text="确认", takefocus=False, command=RGB)
btn.place(x=102, y=315, width=100, height=30)

btn1 = tk.Button(parent, text="保存", takefocus=False, command=savepr)
btn1.place(x=287, y=315, width=100, height=30)

tk.mainloop()