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openCV with python
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- 2. Installations - windows â˘Python 2.7 or 3.5 https://www.python.org/downloads/ ⢠Frequently used Libraries : Numpy, Matplotlib, Scipy http://www.scipy.org/ ⢠Or try Anaconda (Python + popular libraries) https://www.continuum.io/downloads ⢠openCV 3.0.0 http://opencv.org/downloads.html ⢠Copy âcv2.pydâ from pathopencvbuildpython2.7x86(x64) Paste âcv2.pydâ to pathAnacondaLibsite-packages In python shell : import cv2 cv2.__version__ (two underscores) â3.0.0â
- 3. Installations - mac â˘Python 2.7 or 3.5 or Anaconda https://www.python.org/downloads/ https://www.continuum.io/downloads ⢠Frequently used Libraries : Numpy, Matplotlib, Scipy in Terminals : pip install âU numpy scipy matplotlib (for Python 2.X) pip3 install âU numpy scipy matplotlib (for Python 3.X) ⢠Download openCV http://opencv.org/downloads.html ⢠Install Xcode https://developer.apple.com/xcode/ ⢠Install Cmake https://cmake.org/download/ ⢠Build openCV for Python http://luigolas.com/blog/2014/09/15/install-opencv3-with- python-3-mac-osx/
- 4. Ex1: read/show images â˘Put the image (lena.bmp) and cv_ex1.py in the same folder â˘
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- 6. Ex2: open videos â˘Put the video (test.mp4) and cv_ex2.py in the same folder â˘
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- 8. Ex3: using webCam â˘Very similar to video open, just change the argument to be 0 â˘
- 9. Ex4: edges detection â˘Adopt âcannyâ method to achieve edges detection â˘
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- 11. Ex5: lines detection â˘Lines detection using Hough Transform ď line equation using (r, thita) â˘
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- 13. Ex6: object tracking usingcolor filtering ⢠using color as features : quick and dirty ⢠Detecting something in blue
- 14. ⢠Ex6: object tracking usingcolor filtering
- 15. Ex7: contours classification â˘blue objects detextion ď shapes recognition ⢠Rectangle ď shown in green ⢠multiple-sides-polygon (like circles) ď shown in red
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- 17. Lightening condition invariant? â˘Color looks different with lightening issue.
- 18. Finding cornersâ features â˘Color invariant, Scale invariant
- 19. Finding cornersâ features â˘Color invariant, Scale invariant
- 20. Features matching ⢠featuresmatching with two images
- 21. ⢠Features method: ORB (Oriented FAST and Rotated BRIEF) ⢠Matching method : BruteForceMatcher ⢠Ex8: object tracking using cornersâ features
- 22. ⢠Ex8: object tracking usingcornersâ features
- 23. Ex9: Face recognition/tracking â˘Download the training model (haarcascade_frontalface_default.xml') and put it in the same folder with the code cv_ex9.py. â˘
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- 25. References ⢠You canaccess the example from https://github.com/ntudavid/CV_lab ⢠Reference : OpenCV â Python Tutorials https://opencv-python-tutroals.readthedocs.org/en/latest/