Implementations of Hu's invariants with respect to translation, scale, and rotation using skimage and opencv APIs.
git clone https://github.com/SensorAnalyticsAus/hu-invars.git
cd cd hu-invars/
With skimage
python hu.py img/shapes-01.jpg
Output:
[ 3.0877 6.74289 14.92162 14.59358 29.37642 18.02443 29.83101]
With opencv
python hu-cv2.py img/shapes-01.jpg
Output
[ 3.0877 6.74289 14.92162 14.59358 29.37642 18.02443 -29.83101]
- M. K. Hu, "Visual Pattern Recognition by Moment Invariants", IRE Trans. Info. Theory, vol. IT-8, pp.179–187, 1962
- scikit-image
- opencv image moments