Requires an LP360 Drone or LP360 Land Standard license.

Introduction

The Post Processing tool in the LP360 Sensor Tab is designed to prepare datasets for downstream tools by creating trajectory files for each flight line from the sensor trajectory files and cutting the LAS data into files corresponding to those flight lines. This tool is particularly useful for large datasets, allowing users to geocode everything and later cut and filter as desired without needing to geocode again.

Steps to Use the Post Processing Tool

1. Open the Post Processing Dialog

• • On the Sensor Tab, make active the Cycle/Flight combination to be processed.
  • Select the Post Processing button on the Sensor Tab to open the Post Processing dialog.

Post Processing Tool on the Sensor Ribbon

2. Configure LiDAR Processing Settings

• • Clip Angle: Enter the processing angle in degrees. This number represents the half angle off Nadir of the scanner. If 40 is entered, LiDAR data will be geocoded if it falls between +40° and -40°, creating a total field of view (FOV) of 80°.
  • Clip Range: Enter the minimum and maximum range to be geocoded. No points with a range less than and/or greater than these values, respectively, will be geocoded.
  • Promote LAS to Version 1.4: Ensure this option is checked to promote the output LAS file format to 1.4.
  • Starting Flight Line Number (Point Source ID): Assign unique point source IDs for each line to keep them unique within the project. Selecting a unique starting ID allows the user to determine the best values between 1 and 65535 to use for each line. For multi-Cycle projects it is suggested to use a nomenclature, such as CCCFF, where CCC is the Cycles flown for the project, 1-645, and FF is the flight line per Cycle, 1-99, to keep the point source IDs unique within the project.

Post Processing Dialog

3. Configure Retained Photos Layer Settings

The Retain Photos Settings allows the user to specify the photos to be kept for geotagging and export to photogrammetric software packages using Export Photo Package or for processing in Agisoft Ortho Mapping  or Ortho Mapping . The notion of “Retained Photos” creates a layer of photos on a new layer called “Retained Photos.”

4. Run Post Processing

• • Select Run post Processing to start the post processing job. A confirmation page will appear to confirm the execution of the tool.
  • Upon completion, review the results and make any necessary adjustments.

Post Processing Confirmation

Good Practices

• Ensure that the flight lines are accurately created and edited before running the Post Processing tool.
• Use the Retained Photos Settings to manage the photos effectively for downstream processing.