OpenCV图像处理GUI：TypeError：on_click_diff_per_button（）需要1个位置参数，但提供了2个

Question

我正在为图像处理创建一个opencvgui。我有两个图像文件夹。一个是示例图像文件夹，另一个是参考文件文件夹。我在filedialog.askopenfilename的帮助下导入了框架和示例框架中的图像。现在它在两个不同的画面中显示。我正在尝试将两帧的元素与第三帧连接起来，以便它可以显示两帧之间的图像差异图像。而在执行此操作时，出现以下错误：

错误：

select button clicked
upload button clicked
select Sample button clicked
upload Sample button clicked
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\CTPL\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
    return self.func(*args)
  File "C:/Users/CTPL/PycharmProjects/TempMatching/OpenCV_GUI_try2.py", line 280, in <lambda>
    select_button = tk.Button(frame5, text='Difference', command=lambda: difference_button.on_click_diff_per_button(Difference_per_label))
TypeError: on_click_diff_per_button() takes 1 positional argument but 2 were given

我应用的python脚本如下所示：

ERROR IMAGE

我在上图中突出显示了错误部分。你知道吗

import tkinter as tk
from tkinter import filedialog
from tkinter import messagebox
import glob
import os
import cv2
import numpy as np
from PIL import Image
from PIL import ImageTk
from skimage.metrics import structural_similarity
class Button:

    def __init__(self, root, frame2):
        self.root = root
        self.frame2 = frame2
        self.radio_var = tk.IntVar()
        self.path_selected = 'none'
        self.paths = []
        self.radio_handle = []
        self.check_value = []

    def on_click_select_button(self, fname_label):
        print('select button clicked')
        fileType = [('jpg/png file', ('*.jpg', '*.png'))]
        self.path_selected = filedialog.askopenfilename(filetypes=fileType)
        fname_label['text'] = os.path.basename(self.path_selected)

    def on_click_upload_button(self, path='None', image='None'):
        print('upload button clicked')

        if path == 'None':
            path = self.path_selected
        else:
            cv2.imwrite(path, image)

        if path in self.paths:
            messagebox.showerror('Upload Error', '"'
                                 + path
                                 + '"' + ' is already uploaded.')
        else:
            self.paths.append(path)
            self.create_radio_button(path)

    def on_click_show_button(self):
        print('showButton clicked')
        image = cv2.imread(self.paths[self.radio_var.get()])
        file_name = os.path.basename(self.paths[self.radio_var.get()])
        name, ext = os.path.splitext(file_name)
        path = 'images/' + name + '_' + ext

        # cv2.imwrite(path, image)
        self.open_image_window(path, image)

    def create_radio_button(self, path):

        image = cv2.imread(path)
        # image = cv2.resize(image,(120,120))
        image = self.scale_to_height(image, 120)
        image_tk = self.to_tk_image(image)

        radio_button = tk.Radiobutton(self.frame2, image=image_tk,
                                      value=len(self.radio_handle),
                                      variable=self.radio_var)
        self.radio_var.set(0)
        self.radio_handle.append(radio_button)
        self.check_value.append(self.radio_var)

        radio_button.grid(row=(len(self.radio_handle) - 1) // 3,
                          column=(len(self.radio_handle) - 1) % 3)
        self.root.mainloop()

    def open_image_window(self, path, image):

        if image.shape[0] > 300:
            image = self.scale_to_height(image, 300)

        img_win = tk.Toplevel(self.root)
        fname = os.path.basename(path)
        img_win.title(fname)
        img_canvas = tk.Canvas(img_win, width=image.shape[1],
                               height=image.shape[0])
        img_canvas.pack()
        image_tk = self.to_tk_image(image)
        img_canvas.create_image(0, 0, image=image_tk, anchor='nw')

        uploadButton2 = tk.Button(img_win, text='upload',
                                  command=lambda: self.on_click_upload_button(path, image))
        uploadButton2.pack()
        self.root.mainloop()
    def to_tk_image(self, image_bgr):
        image_rgb = cv2.cvtColor(image_bgr, cv2.COLOR_BGR2RGB)
        image_pil = Image.fromarray(image_rgb)
        image_tk = ImageTk.PhotoImage(image_pil)
        return image_tk
    def scale_to_height(self, img, height):
        scale = height / img.shape[0]
        return cv2.resize(img, dsize=None, fx=scale, fy=scale)
class Sample_Button:
    def __init__(self, root, frame4):
        self.Sample_root = root
        self.frame4 = frame4
        self.Sample_radio_var = tk.IntVar()
        self.Sample_path_selected = 'none'
        self.Sample_paths = []
        self.Sample_radio_handle = []
        self.Sample_check_value = []

    def on_click_select_button_Sample(self, Sample_fname_label):
        print('select Sample button clicked')
        Sample_fileType = [('jpg/png file', ('*.jpg', '*.png'))]
        self.Sample_path_selected = filedialog.askopenfilename(filetypes=Sample_fileType)
        Sample_fname_label['text'] = os.path.basename(self.Sample_path_selected)

    def on_click_upload_button_Sample(self, Sample_path='None', Sample_image='None'):
        print('upload Sample button clicked')

        if Sample_path == 'None':
            Sample_path = self.Sample_path_selected
        else:
            cv2.imwrite(Sample_path, Sample_image)

        if Sample_path in self.Sample_paths:
            messagebox.showerror('Upload Error', '"'
                                 + Sample_path
                                 + '"' + ' Sample is already uploaded.')
        else:
            self.Sample_paths.append(Sample_path)
            self.create_Sample_radio_button(Sample_path)

    def on_click_show_button_Sample(self):
        print('show Sample Button clicked')
        Sample_image = cv2.imread(self.Sample_paths[self.Sample_radio_var.get()])
        Sample_file_name = os.path.basename(self.Sample_paths[self.Sample_radio_var.get()])
        Sample_name, ext = os.path.splitext(Sample_file_name)
        Sample_path = 'Sample_images/' + Sample_name + '_' + ext


    def create_Sample_radio_button(self, Sample_path):
        Sample_image = cv2.imread(Sample_path)
        Sample_image = self.scale_to_height_Sample(Sample_image, 120)
        Sample_image_tk = self.Sample_to_tk_image(Sample_image)

        Sample_radio_button = tk.Radiobutton(self.frame4, image=Sample_image_tk,
                                      value=len(self.Sample_radio_handle),
                                      variable=self.Sample_radio_var)
        self.Sample_radio_var.set(0)
        self.Sample_radio_handle.append(Sample_radio_button)
        self.Sample_check_value.append(self.Sample_radio_var)

        Sample_radio_button.grid(row=(len(self.Sample_radio_handle) - 1) // 3,
                          column=(len(self.Sample_radio_handle) - 1) % 3)
        self.Sample_root.mainloop()

    def Sample_to_tk_image(self, Sample_image_bgr):
        Sample_image_rgb = cv2.cvtColor(Sample_image_bgr, cv2.COLOR_BGR2RGB)
        Sample_image_pil = Image.fromarray(Sample_image_rgb)
        Sample_image_tk = ImageTk.PhotoImage(Sample_image_pil)
        return Sample_image_tk

    def scale_to_height_Sample(self, Sample_img, height):
        scale = height / Sample_img.shape[0]
        return cv2.resize(Sample_img, dsize=None, fx=scale, fy=scale)

class Difference_Button(Button, Sample_Button):
    def on_click_diff_per_button(self):
        print('select Difference button clicked')

        Sample_image = cv2.imread(self.Sample_paths[self.Sample_radio_var.get()])
        print(Sample_image)
        image = cv2.imread(self.paths[self.radio_var.get()])
        print(image)
        #for x in range(7):
        Greyscale_Sample_image = cv2.cvtColor(Sample_image, cv2.COLOR_RGB2GRAY)
        Greyscale_image = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)

        (score, diff) = structural_similarity(Greyscale_image, Greyscale_Sample_image, full=True)  # bw_
        print("Image similarity %ge =", score * 100)

        diff = (diff * 255).astype("uint8")

        cv2.imshow('diff', diff)
        cv2.waitKey()

    pass


if __name__ == '__main__':
    os.makedirs('images', exist_ok=True)
    root = tk.Tk()
    root.title('Image GUI')
    root.geometry('1280x960')
    pw_left = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_left.pack(side='left', anchor='nw')
    pw_right = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_right.pack(side='left', anchor='nw')
    frame1 = tk.Frame(pw_left, bd=2, relief="ridge")
    frame1.pack()
    frame2 = tk.LabelFrame(pw_right, bd=2, text='Uploaded images')
    frame2.pack(side='left', anchor='nw')
    button = Button(root, frame2)
    label = tk.Label(frame1, text='File:')
    label.grid(row=0, column=0)
    file_name_label = tk.Label(frame1, text='-----not selected-----', width=20, bg='white')
    file_name_label.grid(row=0, column=1)
    select_button = tk.Button(frame1, text='select', command=lambda: button.on_click_select_button(file_name_label))
    select_button.grid(row=0, column=2)
    uploadButton = tk.Button(frame1, text='Upload',
                             command=lambda: button.on_click_upload_button())
    uploadButton.grid(row=0, column=3)
    os.makedirs('Sample_images', exist_ok=True)
    pw_left = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_left.pack(side='left', anchor='nw')
    pw_right = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_right.pack(side='left', anchor='nw')
    frame3 = tk.Frame(pw_left, bd=2, relief="ridge")
    frame3.pack()
    frame4 = tk.LabelFrame(pw_right, bd=2, text='Uploaded Sample images')
    frame4.pack(side='right', anchor='nw')


    Sample_button = Sample_Button(root, frame4)
    Sample_label = tk.Label(frame3, text='Sample File:')
    Sample_label.grid(row=0, column=0)
    Sample_file_name_label = tk.Label(frame3, text='-----not selected-----', width=20, bg='white')
    Sample_file_name_label.grid(row=0, column=1)
    Sample_select_button = tk.Button(frame3, text='select',
                                     command=lambda: Sample_button.on_click_select_button_Sample(
                                         Sample_file_name_label))
    Sample_select_button.grid(row=0, column=2)
    Sample_uploadButton = tk.Button(frame3, text='Upload',
                                    command=lambda: Sample_button.on_click_upload_button_Sample())
    Sample_uploadButton.grid(row=0, column=3)
    os.makedirs('Differece_images', exist_ok=True)
    pw_left = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_left.pack(side='left', anchor='nw')
    pw_right = tk.Frame(root, relief='ridge', borderwidth=4)
    pw_right.pack(side='left', anchor='nw')
    frame5 = tk.Frame(pw_left, bd=2, relief="ridge")
    frame5.pack()
    frame6 = tk.LabelFrame(pw_right, bd=2, text='Uploaded images')
    frame6.pack(side='left', anchor='nw')

    difference_button = Difference_Button(root, frame6)
    Difference_per_label = tk.Label(frame5, text='Show Image Difference', width=20, bg='white')
    Difference_per_label.grid(row=0, column=1)
    img_diff_button = tk.Button(frame5, text='Difference', command=lambda: difference_button.on_click_diff_per_button(Difference_per_label))
    img_diff_button.grid(row=0, column=2)


    root.mainloop()

请帮助我解决这个问题。你知道吗

Answer 1

错误信息非常清楚： on_click_diff_per_button() takes 1 positional argument but 2 were given

如何定义on_click_diff_per_button()：

    def on_click_diff_per_button(self):
        print('select Difference button clicked')
    ....

如何调用该函数：

select_button = tk.Button(frame5, text='Difference', command=lambda: difference_button.on_click_diff_per_button(Difference_per_label))

除了按钮本身（self）之外，您还提供了另一个参数Difference_per_label