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Metashape

INTERMEDIATE
📖2 min read

Introduction​

Agisoft Metashape is a stand-alone software product that performs photogrammetric processing of digital images and generates 3D spatial data to be used in GIS applications, cultural heritage documentation, and visual effects production as well as for indirect measurements of objects of various scales.

Official Website: https://www.agisoft.com

Official Site

Visit the official Agisoft website for Metashape documentation and downloads.

Main Content Section​

Content to be added.

Documentation for Methodology​

To ensure your work aligns with the Berkeley Protocol and the Guide for Judges, use the following points to document your use of Metashape.

Methodology: How to document Metashape

In Your Method Section​

Guidance: Describe the purpose, the tool version, and the input data.

  • Investigative Objective: To generate a dense 3D point cloud and orthomosaic for spatial measurement and analysis.
  • Software Version: Agisoft Metashape Professional [Version] (e.g., 2.1).
  • Input Data: Derived from [Image Set Name] (Source Hash: [First 6 digits]).

In Your Decision Log​

Guidance: Record the specific procedural parameters and integrity checks.

  • Specific Settings: Alignment Accuracy (High/Medium), Depth Map Quality (High), Mesh Generation (Arbitrary/Height Field).
  • Assumptions: Assumed sufficient overlap (60-80%) and consistent lighting conditions.
  • Integrity Check: Verified that analysis was performed on a working copy, not the original evidence file.
  • Date Performed: [YYYY-MM-DD].

Verification & Mitigation​

Guidance: How did you mitigate bias or verify accuracy?

  • Verification: Validated the model scale using known reference distances or Ground Control Points (GCPs).
  • Bias Mitigation: Used coded targets to automate marker detection and reduce manual placement error.

Common Limitations​

  • Struggles with water, glass, and highly reflective surfaces.
  • Moving objects in the scene can cause "ghosting" or geometric errors.

Example Methodology Statement​

"To create a measurable 3D model of the site, Agisoft Metashape (v2.1) was used to process [Number] images [Hash: G7H8I9]. The photos were aligned with 'High' accuracy, and the dense cloud was generated with 'Medium' depth filtering. Scale was verified using a reference bar of [X] meters, with a calculated error of [X.X] cm."