基于gamma矫正的照片亮度调整（python和opencv实现）

import cv2
import numpy as npdef adjust_gamma(image, gamma=1.0):invGamma = 1.0 / gammatable = np.array([((i / 255.0) ** invGamma) * 255 for i in np.arange(0, 256)]).astype("uint8")return cv2.LUT(image, table)# 读取图像
original = cv2.imread("test.png", 1)# gamma矫正
gamma = 1.8 # 矫正系数：越大越亮、越小越暗
adjusted = adjust_gamma(original, gamma=gamma)
cv2.imwrite("result.jpg", adjusted)

矫正前后效果如下：