[5] [5] TOMASI C, MANDUCHI R. Bilateral filtering for gray and color images[C]//Proceedings of the Sixth International Conference on Computer Vision, Jan. 4-7, 1998, Bombay, India. NewYork: IEEE, 1998: 839-846.

[6] [6] BANTERLE F, CORSINI M. A Low-Memory, Straightforward and Fast Bilateral Filter Through Subsampling in Spatial Domain[J]. Computer Graphics forum, 2012, 31(3): 19-32.