Module Mesh Denoise

Mesh denoising for grids, using the algorithm of Sun et al. (2007).
References:
Cardiff University: Filtering and Processing of Irregular Meshes with Uncertainties. online.
Stevenson, J.A., Sun, X., Mitchell, N.C. (2010): Despeckling SRTM and other topographic data with a denoising algorithm, Geomorphology, Vol.114, No.3, pp.238-252.
Sun, X., Rosin, P.L., Martin, R.R., Langbein, F.C. (2007): Fast and effective feature-preserving mesh denoising. IEEE Transactions on Visualization and Computer Graphics, Vol.13, No.5, pp.925-938.

Author: O.Conrad (c) 2012
Specification: grid
Menu: Grid|Filter

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grid	Grid (input)	`INPUT`	-	-
Output	Denoised Grid	Grid (output)	`OUTPUT`	-	-
Options	Threshold	Floating point	`SIGMA`	-	Minimum: 0.000000 Maximum: 1.000000 Default: 0.900000
	Number of Iterations for Normal Updating	Integer	`ITER`	-	Minimum: 1 Default: 5
	Number of Iterations for Vertex Updating	Integer	`VITER`	-	Minimum: 1 Default: 50
	Common Edge Type of Face Neighbourhood	Choice	`NB_CV`	-	Available Choices: [0] Common Vertex [1] Common Edge Default: 0
	Only Z-Direction Position is Updated	Boolean	`ZONLY`	-	Default: 0

Command-line

Usage: saga_cmd grid_filter 10 [-INPUT <str>] [-OUTPUT <str>] [-SIGMA <str>] [-ITER <num>] [-VITER <num>] [-NB_CV <str>] [-ZONLY <str>]
  -INPUT:<str> 	Grid
	Grid (input)
  -OUTPUT:<str>	Denoised Grid
	Grid (output)
  -SIGMA:<str> 	Threshold
	Floating point
	Minimum: 0.000000
	Maximum: 1.000000
	Default: 0.900000
  -ITER:<num>  	Number of Iterations for Normal Updating
	Integer
	Minimum: 1
	Default: 5
  -VITER:<num> 	Number of Iterations for Vertex Updating
	Integer
	Minimum: 1
	Default: 50
  -NB_CV:<str> 	Common Edge Type of Face Neighbourhood
	Choice
	Available Choices:
	[0] Common Vertex
	[1] Common Edge
	Default: 0
  -ZONLY:<str> 	Only Z-Direction Position is Updated
	Boolean
	Default: 0