Bentley Communities
Bentley Communities
  • Site
  • User
  • Site
  • Search
  • User
ContextCapture | Descartes | Pointools | Orbit
  • Product Communities
ContextCapture | Descartes | Pointools | Orbit
ContextCapture | Descartes | Pointools | Orbit Wiki The model appears to be curved instead of being horizontal after AT
    • Sign In
    • +Reality Modeling Wiki
    • +Bentley I/RAS B
    • +Bentley LumenRT
    • +Bentley Pointools
    • -ContextCapture -
      • +ContextCapture User Guides
      • +ContextCapture - Release information
      • +ContextCapture Technical Previews
      • -ContextCapture - How to
        • Camera Recommendation for ContextCapture
        • Changing graphics card settings to use the dedicated GPU on a Windows computer.
        • Changing the JobQueue directory
        • ContextCapture has the ability to find corrupted images before running an AT
        • ContextCapture image navigation in MicroStation
        • ContextCapture surface constraints solution
        • ContextCapture Update 4 Dataset for Evaluation
        • ContextCapture: Combination of Survey Data and Photos
        • ContextCapture: Create Control Point
        • ContextCapture: Difference Between Tie Points and Control Points
        • Creating a Uniquemesh After Generating Initial Model in ContextCapture
        • Export & Import camera optical properties
        • Export logfile for technical support
        • Ground Control Point Specification
        • How does the type of processor in my computer affect the performance of ContextCapture?
        • How to add a custom/local height grid in ContextCapture - Part 2 (Advanced)
        • How to add a custom/local height grid in ContextCapture – Part 1 (Basic)
        • How to calibrate your camera using ContextCapture
        • How to Merge models from different data sources
        • How to scale a model without initial information
        • Import Image Collection and Orientation in ContextCapture
        • Importing Orientation Metadata
        • Interior Use of ContextCapture
        • Issues with FC6310R camera calibration
        • Managing partial updates on large ContextCapture projects
        • Merging 3MX Files
        • Merging Models
        • Multiple Camera Use In ContextCapture
        • My processing is failing due to insufficient memory despite having the tiling correctly adjusted
        • Ortho Parts vs Reconstruction Tiling
        • Reconstructed model displays with cracks after retouch process completed.
        • Smooth Surfaces in ContextCapture
        • Snapping to Referenced Reality Meshes
        • The block is affected by a spherical effect after Aerotriangulation
        • The model appears to be curved instead of being horizontal after AT
        • The model appears upside down after using a block-import file
        • The Model Is Upside Down After Aerotriagulation and No Block File Has Been Used
        • Tiling Tips
        • Unable to download ContextCapture trial software
        • Use of Camera Zoom in ContextCapture
        • Use of Videos in ContextCapture
        • +Working from home with ContextCapture
      • ContextCapture Frequently Asked Questions
      • +ContextCapture - Troubleshooting
      • +ContextCapture Insights
      • ContextCapture License Options
      • Describe the Different Modules of ContextCapture
      • What are the different editions of ContextCapture?
      • ContextCapture User Requirements
    • +Descartes and ContextCapture Editor(deprecated product)
    • +Orbit 3DM
    • +RealityModeling Cloud Services

    You are currently reviewing an older revision of this page.

    • History View current version

    The model seems bent instead of being horizontal after AT

    Product(s): ContextCapture
    Version(s): N\A
    Environment: N\A
    Area: N/A
    Subarea: N\A

    Problem Description

    You acquired a nadir aerial dataset and did not led a specific calibration step

    You submitted an AT, the distortion parameters were computed and your photogroup oriented, but the result is not satisfying.
    On that kind of dataset we often observe the same spherical deformation due to distortion parameters
    inaccuracy.

    Steps to Resolve

    To avoid this problem, we recommend to:

    Capture a small dataset of any object with the same camera

    Process an AT on this dataset by keeping the default settings

     Export the optical properties of the aero-triangulated photogroup

    Import these optical parameters in your "UAV-photogroup"

    Submit an AT and make sure to set the distortion parameters on "Keep" instead of "Adjust"

    The process will take advantage from these more accurate parameters and avoid the spherical effect.


    Export optical properties


    Your camera distortion parameters are unknown

    Submitting an AT will provide you these parameters

    You can export them as an *.opt file by right-clicking on you aero-triangulated photogroup

     

     

    Adjusted Focal Length

     

    Distortion Parameters

    Principal point coordinates (in px)


    Import optical properties


    You led a camera calibration, and you know accurately your camera's distortion parameters

    You can import them as an *.opt file by right-clicking on your photogroup, before submitting the AT

    See Also

     

      Original Author: Felix James
    Communities
    • Home
    • Getting Started
    • Community Central
    • Products
    • Support
    • Secure File Upload
    • Feedback
    Support and Services
    • Home
    • Product Support
    • Downloads
    • Subscription Services Portal
    Training and Learning
    • Home
    • About Bentley Institute
    • My Learning History
    • Reference Books
    Social Media
    •    LinkedIn
    •    Facebook
    •    Twitter
    •    YouTube
    •    RSS Feed
    •    Email

    © 2023 Bentley Systems, Incorporated  |  Contact Us  |  Privacy |  Terms of Use  |  Cookies