Description
The ComputeCZMILCalibration process runs the processed CZMIL data through automated lidar calibration. The computed values can then be applied using the Georeference CZMIL Points process. See Georeference CZMIL Points for more information on this process.
Update
A folder containing CZMIL processed CPF Files.
Command Line Syntax
carisbatch --run ComputeCZMILCalibration [options] <input>
User Interface Command
CZMIL Calibration
Options
The following table describes the parameters available for this process.
Parameter |
| |||
|---|---|---|---|---|
Long | Short | Description | Can Repeat | Notes
|
--survey-folder | A folder containing the lidar configuration file and a folder containing the processed CZMIL data. | FALSE | ||
--lidar-corrections | The corrections applied during the calibration of the lidar data: • BORESIGHT - Adjusts the misalignment (Boresight) angles between IMU and Sensor. This correction should be applied whenever the system is re-installed or components are replaced. • PRODUCTION - Adjusts the trajectory to correct for misalignments between flightlines. This correction should be applied to improve matching of project data. • BATHY_LOOKUP_TABLE: Adjusts the bathy look-up-table coefficients by comparing CZMIL data against ground control points (GCP). This process requires the Ground Control Points File option to be populated with a GCP file in ASCII format. • BORESIGHT_PLUS_RANGE_IN_AIR: Adjusts the misalignment (Boresight) angles between IMU and Sensor, along with Range scale and offsets. This option should be used whenever the system is re-installed or components are replaced. This process requires the Ground Control Points File option to be populated with a GCP file in ASCII format. • SENSOR_CALIBRATION - Adjusts the intrinsic sensor calibration parameters, including angular and range corrections between channels. This option should only be used after sensor repairs or when advised by Teledyne. This process requires the Ground Control Points File option to be populated with a GCP file in ASCII format. The default value is BORESIGHT. | FALSE | ||
--ground-control-points-file | A file containing ground control points. LMS uses ground control points to adjust the calibration parameters during the calibration process. LMS accepts control points given with their IDs and standard deviations. The control points should be in an ASCII file as a list of coordinates. Each control point should be written on a separate line. LMS skips lines starting with the # symbol. There are several supported formats for an ASCII file with a set of control points: • 3 columns: X, Y, Z • 4 columns: ID, X, Y, Z • 6 columns: X, Y, Z, Std_Dev (X), Std_Dev (Y), Std_Dev (Z) • 7 columns: ID, X, Y, Z, Std_Dev (X), Std_Dev (Y), Std_Dev (Z) | FALSE | ||
Example
To use this command refer to the following example.
Example | ||
|---|---|---|
Objective | You want to calculate corrections for misaligned angles in survey data. | |
Description | Command Line Syntax | |
The lidar correction type will be Boresight. |
| |
The folder containing the survey data is located at D:\SampleData\Survey\. |
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Command Line |
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Outcome | Calibration values are calculated for the survey data and saved to the survey data folder. | |
Extra Notes | N/A | |