Tool IMCORR - Feature Tracking

The tool performs an image correlation based on two raster data sets. Additionally, two DTMs can be given and used to optain 3D displacement vectors.
This is a SAGA implementation of the standalone IMCORR software provided by the National Snow and Ice Data Center in Boulder, Colorado / US.

References

Scambos, T. A., Dutkiewicz, M. J., Wilson, J. C., and R. A. Bindschadler (1992): Application of image cross-correlation to the measurement of glacier velocity using satellite image data. Remote Sensing Environ., 42(3), 177-186.
Fahnestock, M. A., Scambos, T.A., and R. A. Bindschadler (1992): Semi-automated ice velocity determination from satellite imagery. Eos, 73, 493.
standalone software and documentation

Author: Magnus Bremer (c) 2012
Menu: Grid|Analysis

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grid 1	Grid (input)	`GRID_1`	The first grid to correlate	-
	Grid 2	Grid (input)	`GRID_2`	The second grid to correlate	-
	DTM 1 (*)	Grid (optional input)	`DTM_1`	The first DTM used to assign height information to grid 1	-
	DTM 2 (*)	Grid (optional input)	`DTM_2`	The second DTM used to assign height information to grid 2	-
Output	Correlated Points	Shapes (output)	`CORRPOINTS`	Correlated points with displacement and correlation information	-
Output	Displacement Vector	Shapes (output)	`CORRLINES`	Displacement vectors between correlated points	-
Options	Grid System	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Search Chip Size (Cells)	Choice	`SEARCH_CHIPSIZE`	Chip size of search chip, used to find correlating reference chip	Available Choices: [0] 16x16 [1] 32x32 [2] 64x64 [3] 128x128 [4] 256x256 Default: 2
	Reference Chip Size (Cells)	Choice	`REF_CHIPSIZE`	Chip size of reference chip to be found in search chip	Available Choices: [0] 16x16 [1] 32x32 [2] 64x64 [3] 128x128 Default: 1
	Grid Spacing (Map Units)	Floating point	`GRID_SPACING`	Grid spacing used for the construction of correlated points [map units]	Minimum: 0.100000 Maximum: 256.000000 Default: 10.000000
(*) optional

Command-line

Usage: saga_cmd grid_analysis 19 [-GRID_1 <str>] [-GRID_2 <str>] [-DTM_1 <str>] [-DTM_2 <str>] [-CORRPOINTS <str>] [-CORRLINES <str>] [-SEARCH_CHIPSIZE <str>] [-REF_CHIPSIZE <str>] [-GRID_SPACING <double>]
  -GRID_1:<str>         	Grid 1
	Grid (input)
  -GRID_2:<str>         	Grid 2
	Grid (input)
  -DTM_1:<str>          	DTM 1
	Grid (optional input)
  -DTM_2:<str>          	DTM 2
	Grid (optional input)
  -CORRPOINTS:<str>     	Correlated Points
	Shapes (output)
  -CORRLINES:<str>      	Displacement Vector
	Shapes (output)
  -SEARCH_CHIPSIZE:<str>	Search Chip Size (Cells)
	Choice
	Available Choices:
	[0] 16x16
	[1] 32x32
	[2] 64x64
	[3] 128x128
	[4] 256x256
	Default: 2
  -REF_CHIPSIZE:<str>   	Reference Chip Size (Cells)
	Choice
	Available Choices:
	[0] 16x16
	[1] 32x32
	[2] 64x64
	[3] 128x128
	Default: 1
  -GRID_SPACING:<double>	Grid Spacing (Map Units)
	Floating point
	Minimum: 0.100000
	Maximum: 256.000000
	Default: 10.000000