Topographic correction for satellite imagery's bands using a Digital Elevation Model to estimate and remove the shading effect for the given position of the Sun at acquisition time.
| Name | Type | Identifier | Description | Constraints |
Input | Elevation | Grid, input | DEM | - | - |
Original Image | Grid, input | ORIGINAL | - | - |
Output | Corrected Image | Grid, output | CORRECTED | - | - |
Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
Grid system | Grid system | DEM_GRIDSYSTEM | - | - |
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 |