hog.py 文件源码

def global_gradient(self):
        gradient_values_x = cv2.Sobel(self.img, cv2.CV_64F, 1, 0, ksize=5)
        gradient_values_y = cv2.Sobel(self.img, cv2.CV_64F, 0, 1, ksize=5)
        gradient_magnitude = cv2.addWeighted(gradient_values_x, 0.5, gradient_values_y, 0.5, 0)
        gradient_angle = cv2.phase(gradient_values_x, gradient_values_y, angleInDegrees=True)
        return gradient_magnitude, gradient_angle