Figure 4 & 6: Coarsened images and their corresponding detail layers for several different edge-preserving filtering schemes.
Original Image BLF [Chen et al. 2007] MSBLT [Fattal et al. 2007] LCIS [Tumblin and Turk 1999] [Choudhury and Tumblin 2003] WLS Iterative WLS Fine Medium Coarse