1. Lowe, David G.: Distinctive image features from scale-invariant keypoints. Int. J. Comput. Vis. 60(2), 91–110 (2004)
2. Dalal, N., Triggs, B.: Histograms of Oriented Gradients for Human Detection, vol. 1, pp. 886–893. IEEE, USA (2005)
3. Ojala, T., Pietikainen, M., Harwood, D.: Performance Evaluation of Texture Measures with Classification Based on Kullback Discrimination of Distributions, vol. 1, pp. 582–585. IEEE Comput. Press, Soc., Jerusalem, Israel (1994)
4. Viola, P., Jones, M.: Rapid Object Detection Using a Boosted Cascade of Simple Features, vol. 1, pp. I–511; I–518. IEEE Comput. Soc., USA (2001)
5. Duda, Richard O., Hart, Peter E.: Use of the Hough transformation to detect lines and curves in pictures. Commun ACM 15(1), 11–15 (1972)