Youngsuck Ji and  Youngjoon Han and  Hernsoo Hahn,  Adaptive Block State Update Method for Separating Background.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 2051 - 2055
    [viewed 23 April 2021]. Available from: https://publications.waset.org/pdf/13691.