| Environments | MODELER |
| Batch Mode | Yes |
| Sections | Description Ports Port Details Parameters Parameter Details Details Related |
Reads elevations from a digital elevation layer and compares the elevations with elevation values from a given GCP (ground control point) layer. The root mean square error is generated in a report.
| In/Out | Name | Caption | Type | Min. - Max. Layers | Connection |
|---|---|---|---|---|---|
| In | InputChn | Elevation Layer | Raster | 1 - 1 | Mandatory |
| In | InputGCP | GCP Layer | GCP | 1 - 1 | Mandatory |
Contains the input image layer consisting of the digital elevation data.
Contains the input layer consisting of the ground control point data.
| Name | Caption | Type | Data Range | Default | Optional |
|---|---|---|---|---|---|
| BackElevation | Background Elevation Value | Real | -32767.0 <= x <= 65536.0 | <none> | yes |
| Report | Report Mode | Text | <user-specified filename> | LOG | No |
BackElevation: Background Elevation Value - Optional
Valid Values: -32767.0 <= x <= 65536.0 Default value: <none>
Specifies the background elevation value which will be ignored. This value will not be compared with the elevation values in the database layer, permitting the omission of specific regions when computing the root mean square error.
Valid Values: <user-specified filename> Default value: LOG
Specifies the file to which the generated report will be appended. In addition to the options available from the pull-down menu, the user can enter a filename (max. 64 characters).
This module generates a RMS error report between the extracted DEM from satellite images or airphotos and the input elevations from a GCP layer.
The database layer must be a GCP layer (type 214). The georeferencing of the file and the georeferencing of the database layer must be compatible to make the RMS computation.
BackElevation specifies the background elevation value in the digital elevation layer in which the elevation will not be compared with the values in the database layer. This permits the omission of regions when computing the RMS error.
The output of the RMS report can either be directed to the terminal or a text file using the Report parameter.
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