How to Export Trimble Data to DeepWalk: A 3-Step Migration Guide

Quick Answer:

To move your existing Trimble mobile mapping data into DeepWalk, export three files: a colorized point cloud in LAS 1.4 format, sidewalk-facing images with a reference.csv pose file, and a camera calibration JSON file. Below is the full step-by-step process.

If you’ve captured data with a Trimble mobile LiDAR device, you don’t need to recapture it to start using DeepWalk. This guide brings you through the steps on how to export your existing point cloud, imagery, and calibration data so it’s ready to process in DeepWalk Drive.

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Step 1: How Do You Export a Colorized Point Cloud from Trimble?

To export a colorized point cloud from a Trimble device:

1. Run “Generate Scans” with Color enabled to preserve RGB data
2. Export the file in LAS 1.4 format
3. Select the trajectory-split export option
4. Set Timestamp to Yes

This combination captures GPS time and RGB data together in a single export, which simplifies alignment and processing once the data is in DeepWalk Drive.

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Step 2: How Do You Export Sidewalk-Facing Images with Pose Data?

Sidewalk imagery with pose data is exported from the Mobile Mapping tab using the Export to TMX function:

1. Set Panoramic to No 
2. Set Planar/Side to Yes
3. Keep images in their raw, default format

Each exported folder includes a reference.csv file. This file contains the position and roll, pitch, and heading data for every image, which provides the pose information needed to accurately place and orient imagery within DeepWalk Drive.

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Step 3: How Do You Export a Camera Calibration File from Trimble?

The camera calibration file is exported as a .json from the Mobile Mapping ribbon:

1. Locate the Mobile Mapping Calibration File option
2. Export it as a .json
3. Use the as-processed calibration if the device was field-calibrated

This file contains your camera’s intrinsics and distortion coefficients. Using the as-processed version, rather than the factory default, ensures the calibration reflects your camera’s real-world performance.

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Ready to Migrate Your Data?

Your point cloud, sidewalk imagery, and calibration file are exported and ready. Bring your existing Trimble data to DeepWalk and start running sidewalk inspections, no recollecting required. Contact our team to kick off your migration and get your questions answered.

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