Coordinate System Preservation with a Flight-log

This tutorial shows how to preserve a coordinate system while processing many datasets with reuse of a bending-camera setup before a computation of camera poses.

In the tutorial, a workflow with flight-log data is used, which is suitable for processing of datasets obtained not using a completely fixed-camera setup. A case like this occurs when cameras are fastened on pillars which can move a little bit. Even a 1-milimeter movement is visible in an image and so it is not possible to use exact camera positions (re-use the alignment via an XMP workflow). You need to use the flight-log workflow instead, in which the application attempts to fit the alignment on the imported flight-log data.

The flight-log workflow is used to process scans in the user interface (UI) or in the command-line interface (CLI) when preservation of model position and distances in scans is required and usage of exact camera positions is not possible.

On this page can be found step-by-step videos with the flight-log workflow and also the links to the datasets used, metadata, scripts and final models which are presented in the tutorial.

Step-by-Step Video Tutorial

Creating a model step by step: add images, align the images, set ground control points, export a flight-log, set and export a reconstruction region, create a model, simplify the model, replace the source images, texture the model, export the model.


Creating a model using the flight-log workflow: add images, align the images, import a flight-log (export import parameters), import a reconstruction region, create a model, simplify the model, replace the source images, texture the model, export the model.


Model comparison: a comparison of the reconstructed model with the one computed using the flight-log workflow.


Command-line processing of 4 datasets using the flight-log workflow: an illustration of command-line processing of many datasets being reused before a computation of camera poses.

Data Used and Models Computed

Datasets, metadata and scripts used in this tutorial and also the final models computed in this tutorial may be downloaded here:
Datasets: Set2-a (click to download), Set2-b (click to download), Set2-c (click to download), Set-logo (click to download)
Metadata: click to download
Scripts: click to download
Models: Set2-a (click to download), Set2-b (click to download), Set2-c (click to download), Set-logo (click to download)

Epic Games Slovakia s.r.o. would like to thank the company PI3DSCAN (www.pi3dscan.com) for the opportunity to use their datasets Set2-a, Set2-b, Set2-c and Set-logo in this tutorial and also for the permission to distribute them.

www.3dmij.nl

Full-body Scans and CS Preservation

How to use RealityCapture with different full-body scanners

XMP Coordinate System Preservation

Watch step by step how to preserve a coordinate system reusing alignment

See also: