轉載自大神 https://blog.csdn.net/sinat_27382047 的博客
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import io from PIL import Image, ImageTk import tkinter as tk def resize(w, h, w_box, h_box, pil_image): ''' resize a pil_image object so it will fit into a box of size w_box times h_box, but retain aspect ratio 對一個pil_image對象進行縮放，讓它在一個矩形框內，還能保持比例 ''' f1 = 1.0*w_box/w # 1.0 forces float division in Python2 f2 = 1.0*h_box/h factor = min([f1, f2]) #print(f1, f2, factor) # test # use best down-sizing filter width = int(w*factor) height = int(h*factor) return pil_image.resize((width, height), Image.ANTIALIAS) root = tk.Tk() # size of image display box you want #期望圖像顯示的大小 w_box = 800 h_box = 800 # open as a PIL image object #以一個PIL圖像對象打開 pil_image = Image.open(r'C:\Users\23216\Desktop\1.jpg') # get the size of the image #獲取圖像的原始大小 w, h = pil_image.size # resize the image so it retains its aspect ration # but fits into the specified display box #縮放圖像讓它保持比例，同時限制在一個矩形框范圍內 pil_image_resized = resize(w, h, w_box, h_box, pil_image) # convert PIL image object to Tkinter PhotoImage object # 把PIL圖像對象轉變為Tkinter的PhotoImage對象 tk_image = ImageTk.PhotoImage(pil_image_resized) # put the image on a widget the size of the specified display box # Label: 這個小工具，就是個顯示框，小窗口，把圖像大小顯示到指定的顯示框 label = tk.Label(root, image=tk_image, width=w_box, height=h_box) #padx,pady是圖像與窗口邊緣的距離 label.pack(padx=5, pady=5) root.mainloop()

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