Fig. 1From: A clinical utility assessment of the automatic measurement method of the quality of Meibomian glandsRiesz pyramid, h R mask defined for σ m = 0.05,σ n = 0.05,σ α = 0.4 and its second derivative calculated after variable m: a graph of the pyramid of h R masks sequence in the coordinate system defined for pixel units; b h R mask in the 2D graph for α = 0o; c for α = 20o; d for α = 40o; e for α = 60o; f for α = 80o Back to article page