关键步骤:
1、读取图像并转换为YUV色彩空间:
img = cv2.imread('test.jpg')
img_yuv = cv2.cvtColor(img, cv2.COLOR_BGR2YUV)
2、获取Y通道,即yuv_img[:, :, 0]并对Y通道进行均衡化处理,
(补充:'U channel', yuv_img[:, :, 1])和'V channel', yuv_img[:, :, 2])):
img_yuv[:,:,0] = cv2.equalizeHist(img_yuv[:,:,0])
3、再在转化为RGB,并输出即实现彩色图像直方图均衡化:
img_RGB = cv2.cvtColor(img_yuv, cv2.COLOR_YUV2BGR)
cv2.imshow('Histogram equalized',img_RGB )