samhe / opencv-sample

a sample python scripts of face detection with opencv

0基础用OpenCV做人脸识别示例

Environment

• Mac Book Air
• Python3
• OpenCV2

Folder Structure

├── cv-camera.py       #用opencv动态识别mac摄像头的数据，并在适当时候截图
├── cv-image.py        #用opencv识别一个图片的人脸
├── data               #从opencv上复制过来的特征数数
├── images
│   └── sample.jpeg    #cv-image.py 的默认识别样图片
└── result             #ca-camera.py 的输出目录

Installations (for Mac only)

• Ensure brew, xcode installed and update
• Install the opencv by brew (最好翻墙后搞，会顺利点。)

  $ brew install opencv
  Updating Homebrew...
  ...
  ...
  ...

• Verification

  $ python3
  Python 3.6.4 (default, Jan  6 2018, 11:51:15)
  [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.39.2)] on darwin
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import cv2

  按理Brew应该会给python2和python3都安装opencv的库，但不知为什么我的mac安装后，只有python3管用。有经验的同学，麻烦指导一下

• Install the additional libs by pip

  pip3 install -r requirements.txt

Trail run

• cv-image.py - detect the face from a image and draw the result in a new python window

  python3 cv-image.py
  
  # or you can specify a image you want
  python3 cv-image.py --image images/sample.jpeg
  

  • you can press any key to exits

• cv-camera.py

  python3 cv-camera.py
  
  # this script will load the source from camera and detect the face real time

  • press 'c' to capture a image
  • press 'q' to exits
  • the program will capture max. 50 screen in the result folder, when it got new face detected or 'c' key press
  • when the program exists, it will detec the face of the screen captured in result folder and save the related faces in subfolder.