Topographic correction tools for satellite imagery using a digital elevation model (DEM) and the position of the Sun at acquisition time to estimate and remove shading effects.
| Name | Type | Identifier | Description | Constraints |
Input | Elevation | Grid, input | DEM | - | - |
Bands | Grid list, input | BANDS | - | - |
Output | Corrected Bands | Grid list, output | CORRECTED | - | - |
Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
Grid system | Grid system | DEM_GRIDSYSTEM | - | - |
Azimuth | Floating point | AZIMUTH | direction of sun (degree, clockwise from North) | Minimum: 0.000000 Maximum: 360.000000 Default: 180.000000 |
Height | Floating point | HEIGHT | 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: 2 |
Minnaert Correction | Floating point | MINNAERT | - | Minimum: 0.000000 Maximum: 1.000000 Default: 0.500000 |
Maximum Number of Cells | Integer | MAXCELLS | Maximum number of grid cells used for trend analysis as required by C correction. | Minimum: 1000 Default: 100000 |
Limit Value Range | Boolean | LIMIT | Avoid over and undershootings specifying value range limits. | Default: 0 |
Minimum | Floating point | LIMIT_MIN | - | Default: 1.000000 |
Maximum | Floating point | LIMIT_MAX | - | Default: 255.000000 |