質問編集履歴
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import部を追記
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@@ -20,4 +20,14 @@
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canny_image = cv2.Canny(img, 50, 100, 3)
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canny_image_PIL = Image.fromarray(canny_image)
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```
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```import
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import os,sys
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import cv2
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from PIL import Image, ImageChops, ImageTk
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import numpy as np
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from tkinter import *
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from tkinter import ttk
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from tkinter import filedialog
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from tkinter import messagebox
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```
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