ContextCapture User Guide

Reconstruction

A Reconstruction item manages a framework to create 3D reconstruction or orthophoto/DSM (spatial reference system, region-of-interest, tiling, constraints, retouching, processing settings). Based on the reconstruction item, one or several productions can be launched.

Two reconstruction types are available:

  • 3D reconstruction: true 3D model suited for reality mesh and by-products creation.
  • Orthophoto/DSM: simplified 2.5D model dedicated to high quality orthophoto and DSM creation from photos.

The reconstruction interface

The reconstruction is defined by the following properties:

  • Spatial framework defines spatial reference system, region of interest and tiling. It also includes resolution settings for an orthophoto/DSM.
  • Geometry constraints allows the use of existing 3D data to control the reconstruction and to avoid reconstruction errors.
  • Reference model is the reconstruction sandbox, it stores a model in native format which is progressively completed as productions progress. This reference model is the model to which retouches and reconstruction constraints are applied, and from which future productions are derived.
  • Processing settings sets geometric precision level (high, extra, etcetera) and other reconstruction settings.
  • List of productions.
Note: Spatial framework and processing settings must be edited before starting the production. Once the production is started the Spatial framework tab is read-only. In this case, you can clone the reconstruction to get a new fully editable reconstruction framework.