Module Topographic Correction
References:
Civco, D. L. (1989): 'Topographic Normalization of Landsat Thematic Mapper Digital Imagery', Photogrammetric Engineering and Remote Sensing, 55(9), pp.1303-1309.
Law, K.H., Nichol, J. (2004): 'Topographic Correction for Differential Illumination Effects on Ikonos Satellite Imagery', ISPRS 2004 International Society for Photogrammetry and Remote Sensing, pdf.
Phua, M.-H., Saito, H. (2003): 'Estimation of biomass of a mountainous tropical forest using Landsat TM data', Canadian Journal of Remote Sensing, 29(4), pp.429-440.
Riano, D., Chuvieco, E. Salas, J., Aguado, I. (2003): 'Assessment of Different Topographic Corrections in Landsat-TM Data for Mapping Vegetation Types', IEEE Transactions on Geoscience and Remote Sensing, 41(5), pp.1056-1061, pdf.
Teillet, P.M., Guindon, B., Goodenough, D.G. (1982): 'On the slope-aspect correction of multispectral scanner data', Canadian Journal of Remote Sensing, 8(2), pp.1537-1540.
- Author: Copyrights (c) 2008 by Olaf Conrad
- Specification: grid
- Menu: Terrain Analysis|Lighting
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Original Image | Grid (input) | ORIGINAL | - | - |
| Output | Corrected Image | Grid (output) | CORRECTED | - | - |
| Options | Azimuth | Floating point | AZI | direction of sun (degree, clockwise from North) | Minimum: 0.000000
Maximum: 360.000000
Default: 180.000000 |
| Height | Floating point | HGT | height of sun above horizon (degree) | Minimum: 0.000000
Maximum: 90.000000
Default: 45.000000 |
| Method | Choice | METHOD | - | Available Choices:
[0] Cosine Correction (Teillet et al. 1982)
[1] Cosine Correction (Civco 1989)
[2] Minnaert Correction
[3] Minnaert Correction with Slope (Riano et al. 2003)
[4] Minnaert Correction with Slope (Law & Nichol 2004)
[5] C Correction
[6] Normalization (after Civco, modified by Law & Nichol)
Default: 4 |
| Minnaert Correction | Floating point | MINNAERT | - | Minimum: 0.000000
Maximum: 1.000000
Default: 0.500000 |
| Maximum Cells (C Correction Analysis) | Integer | MAXCELLS | Maximum number of grid cells used for trend analysis as required by C correction. | Minimum: 10
Default: 1000 |
| Value Range | Choice | MAXVALUE | - | Available Choices:
[0] 1 byte (0-255)
[1] 2 byte (0-65535)
Default: 0 |
Command-line
Usage: saga_cmd ta_lighting 4 -DEM <str> -ORIGINAL <str> [-CORRECTED <str>] [-AZI <str>] [-HGT <str>] [-METHOD <str>] [-MINNAERT <str>] [-MAXCELLS <num>] [-MAXVALUE <str>]
-DEM:<str> Elevation
Grid (input)
-ORIGINAL:<str> Original Image
Grid (input)
-CORRECTED:<str> Corrected Image
Grid (output)
-AZI:<str> Azimuth
Floating point
Minimum: 0.000000
Maximum: 360.000000
Default: 180.000000
-HGT:<str> Height
Floating point
Minimum: 0.000000
Maximum: 90.000000
Default: 45.000000
-METHOD:<str> Method
Choice
Available Choices:
[0] Cosine Correction (Teillet et al. 1982)
[1] Cosine Correction (Civco 1989)
[2] Minnaert Correction
[3] Minnaert Correction with Slope (Riano et al. 2003)
[4] Minnaert Correction with Slope (Law & Nichol 2004)
[5] C Correction
[6] Normalization (after Civco, modified by Law & Nichol)
Default: 4
-MINNAERT:<str> Minnaert Correction
Floating point
Minimum: 0.000000
Maximum: 1.000000
Default: 0.500000
-MAXCELLS:<num> Maximum Cells (C Correction Analysis)
Integer
Minimum: 10
Default: 1000
-MAXVALUE:<str> Value Range
Choice
Available Choices:
[0] 1 byte (0-255)
[1] 2 byte (0-65535)
Default: 0