1. Sonka, M., Hlavac, V., & Boyle, R. (2014). Image processing, analysis, and machine vision. Cengage Learning.
2. Feature extraction & image processing;Nixon,2008
3. A survey of computer vision-based human motion capture.;Moeslund;Computer vision and image understanding,2001
4. Pattern classification;Duda,2012
5. Computing the Euler number of an image from its quadtree.;Dyer;Computer Graphics and Image Processing,1980