defimg_Transform(car_contours,oldimg,pic_width,pic_hight):

car_imgs=[]for car_rect incar_contours:if car_rect[2] > -1 and car_rect[2] < 1:

angle= 1

#对于角度为-1 1之间时，默认为1

else:

angle= car_rect[2]

car_rect= (car_rect[0], (car_rect[1][0] + 5, car_rect[1][1] + 5), angle)

box=cv2.boxPoints(car_rect)

heigth_point= right_point =[0, 0]

left_point= low_point =[pic_width, pic_hight]for point inbox:if left_point[0] >point[0]:

left_point=pointif low_point[1] > point[1]:

low_point=pointif heigth_point[1] < point[1]:

heigth_point=pointif right_point[0]

right_point=pointif left_point[1] <= right_point[1]: #正角度

new_right_point = [right_point[0], heigth_point[1]]

pts2= np.float32([left_point, heigth_point, new_right_point]) #字符只是高度需要改变

pts1 =np.float32([left_point, heigth_point, right_point])

M=cv2.getAffineTransform(pts1, pts2)

dst=cv2.warpAffine(oldimg, M, (pic_width, pic_hight))

point_limit(new_right_point)

point_limit(heigth_point)

point_limit(left_point)

car_img= dst[int(left_point[1]):int(heigth_point[1]), int(left_point[0]):int(new_right_point[0])]

car_imgs.append(car_img)elif left_point[1] > right_point[1]: #负角度

new_left_point = [left_point[0], heigth_point[1]]

pts2= np.float32([new_left_point, heigth_point, right_point]) #字符只是高度需要改变

pts1 =np.float32([left_point, heigth_point, right_point])

M=cv2.getAffineTransform(pts1, pts2)

dst=cv2.warpAffine(oldimg, M, (pic_width, pic_hight))

point_limit(right_point)

point_limit(heigth_point)

point_limit(new_left_point)

car_img= dst[int(right_point[1]):int(heigth_point[1]), int(new_left_point[0]):int(right_point[0])]

car_imgs.append(car_img)return car_imgs