如何使用 python 中的 openCV 使图像中的照明均匀，或如何增强非均匀照明图像中的照明

Question

I have an image to segment but illumination is non-uniform. So, how do I make it uniform to segment the image.

Answer 1

You can use adaptive equalization algorithm such as CLAHE . Here is a minimal working example:

import cv2

image = cv2.imread('original.jpg')
clahe = cv2.createCLAHE(clipLimit=2.0, tileGridSize=(8,8))
b = clahe.apply(image[:, :, 0])
g = clahe.apply(image[:, :, 1])
r = clahe.apply(image[:, :, 2])
equalized = np.dstack((b, g, r))
cv2.imwrite('equalized.jpg', equalized)