Python OpenCV: Convert Image BGR and RGB Without cv2.cvtColor()

We can use cv2.cvtColor() to convert image brg to rgb in python opencv. Here is the tutorial:

However, we also can do not use cv2.cvtColor() to convert. In this tutorial, we will introduce you how to do.

1.Open an image using python opencv

import cv2
import numpy as np
from PIL import Image

im_cv = cv2.imread('data/src/lena.jpg')

2.Convert image brg to rgb

im_rgb = im_bgr[:, :, [2, 1, 0]]

3.Use python pillow to save converted image

Image.fromarray(im_rgb).save('data/dst/lena_rgb_pillow.jpg')

You should notice: you can not use cv2.imwrite() to save image.

Run this code, you will see:

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