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#!/usr/bin/python3# -*- coding: utf-8 -*-# 技术支持：https://www.jianshu.com/u/69f40328d4f0 # 技术支持 https://china-testing.github.io/# https://github.com/china-testing/python-api-tesing/blob/master/practices/cv/cv1.py# 项目实战讨论QQ群630011153 144081101# CreateDate: 2018-12-04# import the necessary packagesfrom tkinter import *from PIL import Imagefrom PIL import ImageTkfrom tkinter import filedialogimport cv2def select_image():
# grab a reference to the image panels
global panelA, panelB # open a file chooser dialog and allow the user to select an input
# image
path = filedialog.askopenfilename() # ensure a file path was selected
if len(path) > 0: # load the image from disk, convert it to grayscale, and detect
# edges in it
image = cv2.imread(path)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
edged = cv2.Canny(gray, 50, 100) # OpenCV represents images in BGR order; however PIL represents
# images in RGB order, so we need to swap the channels
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB) # convert the images to PIL format...
image = Image.fromarray(image)
edged = Image.fromarray(edged) # ...and then to ImageTk format
image = ImageTk.PhotoImage(image)
edged = ImageTk.PhotoImage(edged) # if the panels are None, initialize them
if panelA is None or panelB is None: # the first panel will store our original image
panelA = Label(image=image)
panelA.image = image
panelA.pack(side="left", padx=10, pady=10) # while the second panel will store the edge map
panelB = Label(image=edged)
panelB.image = edged
panelB.pack(side="right", padx=10, pady=10) # otherwise, update the image panels
else: # update the pannels
panelA.configure(image=image)
panelB.configure(image=edged)
panelA.image = image
panelB.image = edged# initialize the window toolkit along with the two image panelsroot = Tk()
panelA = NonepanelB = Noneroot.title("opencv 边缘检测演示")
# create a button, then when pressed, will trigger a file chooser# dialog and allow the user to select an input image; then add the# button the GUIbtn = Button(root, text="选择图片", command=select_image)
btn.pack(side="bottom", fill="both", expand="yes", padx="100", pady="100")# kick off the GUIroot.mainloop()
作者：python作业AI毕业设计
链接：https://www.jianshu.com/p/3e80a0b49218
