AnalizeFrame.py 文件源码

def adjust_gamma(self, image, gamma=1.0):
            # build a lookup table mapping the pixel values [0, 255] to
            # their adjusted gamma values
        invGamma = 1.0 / gamma
        table = np.array([((i / 255.0) ** invGamma) * 255
                          for i in np.arange(0, 256)]).astype("uint8")

        # apply gamma correction using the lookup table
        return cv2.LUT(image, table)