从开始用tensorflow相关,才开始接触Python,看起来没啥问题,但是写起来还是有很多不习惯,不知道有没有和我一样的,为了给自己做下笔记,特意加上这一部分(过程中会不断更新):

输出Log

Python日志输出——logging模块 
http://blog.csdn.net/chosen0ne/article/details/7319306


读取图像显示图像:

http://pythonguidecn.readthedocs.io/zh/latest/scenarios/imaging.html

http://blog.csdn.net/sunny2038/article/details/9057415

利用opencv的Camera

http://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_gui/py_video_display/py_video_display.html

注意 ret, frame = cap.read() 需要返回两个参数,否则会出错。

import numpy as np
import cv2

cap = cv2.VideoCapture(0)

while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    # Display the resulting frame
    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()

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