code: def __call__(self, img):
      M = cv2.getRotationMatrix2D(
          (self.degree // 2, self.degree // 2), self.angle, 1
      )
      motion_blur_kernel = np.zeros((self.degree, self.degree))
      motion_blur_kernel[self.degree // 2, :] = 1
      motion_blur_kernel = cv2.warpAffine(
          motion_blur_kernel, M, (self.degree, self.degree)
      )
      motion_blur_kernel = motion_blur_kernel / self.degree
      img = cv2.filter2D(img, -1, motion_blur_kernel)
      img = np.clip(img, 0, 255).astype(np.uint8)
      return img
  
imports: import math
  import numbers
  import random
  import cv2
  import numpy
  from paddle.vision.transforms import Compose, ColorJitter
label_desc: Use image node_id 2 for calling the CVMotionBlur obj's underlying member method code with example usage: obj.__call__(img) and returns: img