mapillary / mapillary/OpenSfM

Try reconstruction with dynamic focal length

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Dominant language
Python
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Description

Hello! I am currently try to put AR on a video. For that I am parsing "reconstruction.json" file for camera Tvec and Rvec. But this approach only works good when the focal length is constant. How can I get reconstruction with dynamic focal length?

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing how reconstruction.json supplies camera Tvec and Rvec, then review OpenSfM's handling of focal length across video frames. Define the expected dynamic-focal output for the AR workflow and how it should be validated; the issue needs a design decision before implementation.

Written by the indexing model from the issue text.

Assessment

Tech stack
opencv, python
Domain
computer-vision
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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