Andrés Frias-Velázquez Josep Ramon Morros Mario García Wilfried Philips Hierarchical stack filtering: a bitplane-based algorithm for massively parallel processors. 1717-1730 2019 16 J. Real Time Image Process. 5 https://doi.org/10.1007/s11554-017-0681-8 db/journals/jrtip/jrtip16.html#Frias-Velazquez19