frames.py 文件源码

def frame_rotate(frame,theta = 45):
        (h, w) = frame.shape[:2]
        center = (w / 2, h / 2)

        # rotate the image by 180 degrees
        M = cv2.getRotationMatrix2D(center, theta, 1.0)
        rotated = cv2.warpAffine(frame, M, (w, h))
        return rotated