实例img = cv2.imread('testimg.png')img = cv2.resize(img,(256,256))cv2.imshow('origin',img),cv2.waitKey(...replicate = cv2.copyMakeBorder(img,20,20,20,20,cv2.BORDER_REPLICATE)cv2.imshow('replicate',replicate),cv2...copyMakeBorder(img,20,20,20,20,cv2.BORDER_CONSTANT,value=(255,255,255))cv2.imshow('constant',constant),cv2...reflect101 = cv2.copyMakeBorder(img,20,20,20,20,cv2.BORDER_REFLECT_101)cv2.imshow('reflect101',reflect101),cv2...destroyAllWindows()wrap = cv2.copyMakeBorder(img,20,20,20,20,cv2.BORDER_WRAP)cv2.imshow('wrap',wrap),cv2