1. K-means based segmentation for real-time zenithal people counting;Antic,2009
2. People tracking using a time-of-flight depth sensor;Bevilacqua,2006
3. Centiles for adult head circumference;Bushby;Archives of Disease in Childhood,1992
4. Counting people in crowded scenes by video analyzing;Cai,2014
5. Privacy preserving crowd monitoring: Counting people without people models or tracking;Chan,2008