crop和resize操作区别

crop:对图像进行剪切

resize：对图像进行伸缩

实践代码

import cv2

bb2d = [30, 30, 72 ,42]

image = cv2.imread('car.png')

pt1 = (int(bb2d[0]), int(bb2d[1]))

pt2 = (int(bb2d[0]) + int(bb2d[2]), int(bb2d[1]) + int(bb2d[3]))

cv2.rectangle(image, pt1, pt2, (0,0,255))

cv2.imshow('original',image)

image = cv2.imread('car.png')

image_cropped = image[int(bb2d[1]):int(bb2d[1]) + int(bb2d[3]),

                      int(bb2d[0]):int(bb2d[0]) + int(bb2d[2])]

cv2.imshow('cropped',image_cropped)

image_resized = cv2.resize(image_cropped,(224,224))

cv2.imshow('resized',image_resized)

cv2.waitKey(0)

运行结果