###机器学习和OpenCV for Python操作图形文件和图形操作####

####utf8#####

from  nupmy import *

ipmort  cv2 

win _name = 'mypicture'           #窗口名称

#CV2.window_mormal: 调整窗口大小

cv2.namedWindow(win_name,cv2.WINDOW_MORMAL) #0 黑白图片,1原×××片

img = cv2.imread ('mypicture.jpg',1)                                #显示图片

cv2.waitkey(0)

cv2.destoryAllWindows()                                                  #销毁创建的对象

######保存图片:OpenCV 可将图片转换为PGM格式#######

cv2.imwrite("paulwalke.mono.pgm",img)

#######Matplolib显示图片#########

from matplotlib import python as plt

img = cv2.imread(‘paulwalker.mono.pgm’,0)#读取黑白图片

plt.imshow(img,cmap =  'gray' , interpolation = 'bicubic')

plt.xticks({}),plt,yticks({})     #隐藏x,y坐标

############绘制直线and矩形####

img=zeros(512,512,3)

#起点,(0,0)终点(511,511),颜色(0,255,255) 像素:2

cv2.line(img,(0,255),(512,255),(0,255,255),2) #直线

左上角:(150,150);右小角:(350,350) 颜色:(255,255,0) 像素:2

cv2.imshow(‘p_w_picpath’,img)

cv2 .waitKey(0)

cv2.destoryALLindows()

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