This is documentation of an archived release.
For documentation on the current version, please check Knowledge Base.

Install iTwin Capture Analysis Engine for Manage & Extract

This page describes the system requirements and installation of iTwin Capture Analysis Engine for iTwin Capture Manage & Extract.
For documentation on how to use iTwin Capture Analysis Engine for iTwin Capture Manage & Extract, see iTwin Capture Analysis.


Requirements for iTwin Capture Analysis 2023


Specific system requirements for iTwin Capture Analysis 2023

  • Operating System: Windows 8, 8.1, 10, and Windows Server 2012, 2016, 2019
  • Memory: 8Gb RAM
  • Graphic Card: NVIDIA Graphics Card > 4.0Gb and up-to-date driver


  • iTwin Capture Extract & Manage 2023 - 23.07.00.xx or higher
  • Python 3.9.13


Installation of iTwin Capture Analysis and its dependencies on top of the installation of iTwin Capture Manage and Extract.

Install iTwin Capture Analysis

  1. Download & install iTwin Capture Analysis 2023
  2. Verify iTwin Capture Analysis Settings > Configuration > GPU AI compatibility > “Your computer can run AI jobs.”
    If not update or install a new GPU driver.

Install Python

  1. Advised customized installation directory: C:\Programs\Python39

Add "iTwin Capture Analysis" Environment Variables for Python

Add new “iTwin Capture Analysis” User Variables matching your Python installation directory.

  1. Go to “Edit the system environment variables”
  2. Add new user variables
    • Name: ITWIN_CAPTURE_ANALYSIS_VENV, Value: C:\Programs\Python39\venv 1)
    • Name: ITWIN_CAPTURE_ANALYSIS_PYTHON, Value: C:\Programs\Python39 2)

Create "iTwin Capture Analysis" Virtual Environment for Python

  1. Execute batch file
    C:\Program Files\Bentley\iTwin Capture Analysis\sdk\iTwinCaptureAnalysis\create_venv.bat
  2. Verify the message “Successfully installed itwincapturemodeler-” towards the end.

Add Detectors

Detectors can be added on-the-fly.

Get "iTwin Capture Analysis" Detectors

  1. Download and unzip detectors
    Supported Detector Types are: Photo Object, Photo Segmentation, Pointcloud Segmentation
  2. Open iTwin Capture Manage and Extract > Preferences > Insights / iTwin Capture Analysis
  3. Set the root directory of unzipped detectors
Or “venv” subfolder of alternative installation root directory
Or alternative installation root directory
Last modified:: 2023/08/17 13:49