RESEPI Processing – LP360

Requires a LP360 Drone license

The RESEPI Processing allows users to process RESEPI sensors using the PCMasterProGL engine. The wizard contains settings for trajectory processing and geocoding. The RESEPI Processing may also be run from the Sensor Processing Launcher

for simultaneous configuration and multi-Cycle processing.

Note: A valid PCMasterProGL license is required to perform this workflow.

RESEPI - Trajectory Processing Settings

The first page of the RESEPI Processing Wizard (Figure 1) is used to select the trajectory processing mode and configure RTK or PPK settings

Cycle

Displays information for the selected Cycle.

Setting	Description
Cycle Name	The RESEPI Cycle selected for processing.
UTC Start Time	Start time of the acquisition.
UTC End Time	End time of the acquisition.
Total (MM:SS)	Total duration of the acquisition.

Processing Mode

PPK: Requires a base station observation file to post process kinematic corrections for the sensor trajectory solution. The user needs to add Base Observation Files that cover the duration of the Cycle and select the applicable Base Station Location from the Survey Nail Manager.
RTK: Requires RTK corrections recorded during the data acquisition.
- RTK Geographic CRS & Epoch: The user needs to select the Geographic Coordinate Reference System (CRS) of the RTK correction service. Normally, the RTK corrections are based on a Global Geographic CRS (Latitude, Longitude, and Elevation) in meters with an applicable epoch for that CRS. The most common CRS used by RTK services are:
  - North America: NAD83(2011) + Ellipsoidal (Meters), Epoch 2010
  - Europe: ETRS89 + Ellipsoidal (Meters), Epoch 1989
  - World: WGS84 + Ellipsoidal (Meters), Epoch 2015

Note: RTK corrections always use a Geographical CRS with ellipsoidal height in meters

GNSS: Not recommended as a final solution, to be used only for troubleshooting.

GNSS Lever Arm Offsets

Defines the physical offsets between the GNSS antenna and the navigation reference frame.

Primary: The primary lever arm offset values in meters.
Secondary: The secondary lever arm offset values in meters.
Refine Lever Arms: When enabled, the processing engine will attempt to refine the specified lever arm offsets during trajectory processing. This option is generally recommended when accurate antenna offset values are available.

RESEPI - Geocoding Settings

The second page of the RESEPI Processing Wizard (Figure 2) contains settings used to generate the georeferenced point cloud, apply filters, and process imagery.

Laser Filter Settings

Optional filters used to remove unwanted points during geocoding.

3D Distance Filtering: Filter by sensor-to-point distance.
Angular Rate Filtering: Filter using angular velocity.
Reflectivity Filtering: Filter by reflectivity values.
Rotation Angle Filtering: Filter based on scanner rotation angle.
Time of Day Filtering: Filter by GPS time.
Geographic Area Filtering: Restrict processing to a specified area.
Remove Outliers: Removes isolated noise points.
Starting Flight Line PSID: Starting Point Source ID assigned during processing.

Photo Processing

Controls image retention and point cloud colorization.

Colorization Quality

None: Creates an uncolored point cloud.
Standard: Recommended for most projects.
High: Produces higher quality colorization with additional processing time.

Additional Options

Adaptive Colorization: Adjusts colorization based on scene conditions.
Color Blending: Smooths transitions between overlapping images.
Update Photo EXIF Tags: Updates image metadata using the final trajectory solution.
Retain Photos: Filter the photos from the flight.
- Retain Photos within Flight Lines.
- Retain Photos within Flights Lines and Interior Turns
- Retain All Photos

How to Process RESEPI Data

Selecting the RESEPI Processing or on the Sensor Processing Launcher opens the RESEPI Processing dialog.
Verify the correct Cycle is selected.
Select the desired Processing Mode.
- Use PPK when Base Station observations are available.
- Use RTK when RTK corrections are available.
Review the GNSS Lever Arm Offsets.
Select Next to open the Geocoding Settings page.
Configure any desired Laser Filter Settings. Recommended to use the 3D Distance filter and Rotation Angle Filtering.
Select the desired Colorization Quality. Recommended Standard colorization.
Enable Update Photo EXIF Tags. Recommended for Photo processing.
Select Submit to submit the job to the Job Manager.
Monitor processing progress in the Job Manager.
Complete the job after processing finishes to add the resulting data to the project.

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