python计算机视觉阅读笔记(一)

# -*- coding: utf-8 -*-
from PIL import Image
from numpy import *
from pylab import *

#获取原图
pil_im = Image.open('img.jpg')
imshow(pil_im)

#灰度化
pil_im1 = pil_im.convert('L')
imshow(pil_im1)

#复制和粘贴图像
box = (50,50,200,200)
region =pil_im.crop(box)
imshow(region)

region = region.transpose(Image.ROTATE_180)
pil_im.paste(region,box)
imshow(pil_im)

#调整图片大小
pil_im = pil_im.resize((50,100))
imshow(pil_im)

#转换角度
pil_im = pil_im.rotate(45)
imshow(pil_im)