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Theia Axiom - v2025
Theia Axiom - v2025
  • Theia3D Documentation
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    • Welcome to Theia3D
    • Keyboard Shortcuts
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      • System Requirements
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      • Camera Setup Tips
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    • Data Collection
      • Data Collection Principles
      • Recording Intrinsic Lens Calibrations
      • Recording Extrinsic Chessboard Calibrations
      • Recording Extrinsic Object Calibrations
    • Theia3D Interface
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      • File Menu
      • Analyze Menu
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      • Results Menu
      • Calibration Menu
        • Check Calibration
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        • Adjust Calibration
      • Tools Menu
        • Check Synchronization
        • Organize Videos
        • Format Sony Multicam
        • Assign Calibration Files
        • Modify People IDs
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      • Settings Menu
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    • Theia Model Description
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    • Data Formats
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    • Camera System Requirements
    • Sony Camera Package
      • Components
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  • Troubleshooting
    • Troubleshooting Documentation
    • Error Messages
      • License Errors
        • License Activation Failed
      • Organize Data Errors
        • Input directory has no mp4 or avi files
      • Load Video Data Errors
        • Videos not formatted properly
        • Only [#] videos found
        • Videos are not the same length
        • Unsupported video codec detected
        • Invalid video
      • Load Calibration File Errors
        • Unable to load calibration
        • Required camera parameter groups not present
      • Load Workspace Errors
        • Selected folder does not contain a valid Theia workspace
        • Incompatible workspace
      • Calibration Errors
        • Camera extrinsics optimization step 3 failed
        • Unable to detect chessboard in overlapping frames for all cameras
        • Too few chessboards detected (<25)
        • Field of view coverage insufficient (<60%)
      • Movement Trial Processing Errors
        • Track people not complete
        • Abnormally high tracking errors
    • Visible Issues
      • Coordinate system is out of place in one camera view
      • Coordinate system is in different positions and/or orientations in all camera viewse
      • Coordinate system is in an incorrect but consistent position and/or orientation in all views
      • Skeleton is consistently outside the body
      • Skeleton is momentarily incorrect
      • Skeleton is incomplete
      • Skeleton is completely missing
      • Skeleton is jittery
    • Sony Troubleshooting
      • Initialization Issues
      • Unstable Connection
    • Other Issues
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  1. Troubleshooting
  2. Error Messages
  3. Calibration Errors

Field of view coverage insufficient (<60%)

PreviousToo few chessboards detected (<25)NextMovement Trial Processing Errors

Last updated 2 months ago

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Explanation

This error message arises when processing a lens calibration trial, and the detected chessboard patterns fail to coverage a sufficient proportion of the camera view. Theia requires the chessboard pattern detections cover at least 60% of the camera view in order to produce lens calibration parameters for that view. Review the section for more detail.

While the minimum coverage required is 60%, we recommend aiming for as high coverage values as possible, with >90% coverage being our recommended minimum.

Possible Solutions

Check that the correct lens calibration trial videos were loaded. If an trial is loaded and processed using the Lens Calibration tool, this error can occur.

Check that the chessboard pattern is sufficiently visible throughout the recording. If the videos are too dark or too bright, try using the to improve the visibility of the chessboard pattern. If the chessboard is too close to the camera during the trial such that pattern is too large and is never fully visible, a new lens calibration trial will need to be recorded.

extrinsic chessboard calibration
Enhance Videos
Lens Calibration Metrics