Read an image with OpenCV and display it with Tkinter

You might want to take a look at this one. Here is something works for me:

import numpy as np
import cv2
import Tkinter 
import Image, ImageTk

# Load an color image
img = cv2.imread('img.png')

#Rearrang the color channel
b,g,r = cv2.split(img)
img = cv2.merge((r,g,b))

# A root window for displaying objects
root = Tkinter.Tk()  

# Convert the Image object into a TkPhoto object
im = Image.fromarray(img)
imgtk = ImageTk.PhotoImage(image=im) 

# Put it in the display window
Tkinter.Label(root, image=imgtk).pack() 

root.mainloop() # Start the GUI

For me both answers above did not work but were close. The following code did the trick for me (I also want to use place instead of pack):

from PIL import ImageTk, Image

image = cv2.cvtColor(self.image, cv2.COLOR_BGR2RGB)
image = ImageTk.PhotoImage(image=Image.fromarray(image))
label_image = Label(self.detection, image=image)
label_image.image = image
label_image.place(x=0, y=0, anchor="w")

For Python3 I had to modify @Ha Dang answer:

from tkinter import *
from PIL import Image, ImageTk
import cv2
import numpy as np

image_name = 'bla.jpg'

image = cv2.imread(image_name)

#Rearrang the color channel
b,g,r = cv2.split(image)
img = cv2.merge((r,g,b))

# A root window for displaying objects
root = Tk()  

# Convert the Image object into a TkPhoto object
im = Image.fromarray(img)
imgtk = ImageTk.PhotoImage(image=im) 

# Put it in the display window
Label(root, image=imgtk).pack() 

root.mainloop() # Start the GUI

Requirements were:

pip3

numpy==1.13.1
opencv-python==3.3.0.9
Pillow==4.2.1

brew

python3
tcl-tk