Oscar Lorentzon
Software Engineer at Meta
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolOscar Lorentzon is a seasoned software engineer with 11 years of experience, currently contributing to core systems at Meta from San Francisco. He brings practical expertise in back-end development and computer vision pipelines, evidenced by contributions to the well-known OpenSfM project where he improved SIFT matching, FLANN parameters, and 3D reconstruction visualization. A Lund University engineering graduate, Oscar combines academic grounding with production-grade problem solving across feature extraction, matching algorithms, and interactive viewers. Colleagues appreciate that he not only fixes tricky algorithmic bugs but also enhances user-facing tooling like reconstruction viewers and journey graph helpers, showing a rare blend of low-level algorithm work and pragmatic UX-minded improvements.
12 years of coding experience
Master of Science, Master of Science at The Faculty of Engineering at Lund University
Github Skills (11)
testing10
unit-testing10
opencv10
javascript10
rxjs10
3d-reconstruction10
python9
mochajs9
typescript4
typescripts4
typescript-types4
Programming languages (4)
Github contributions (5)
mapillary/OpenSfM
Dec 2014 - Oct 2021
Open source Structure-from-Motion pipeline
Role in this project:
Back-end Developer
Back-end DeveloperContributions:298 commits, 24 PRs, 99 pushes in 6 years 11 months
Contributions summary:Oscar primarily contributed to the `opensfm/features.py` and `viewer/reconstruction.html` files, indicating work related to feature extraction, matching, and the visualization of the 3D reconstruction. They fixed bugs related to FLANN parameter names, resolved issues with KNN matching for SIFT features, and implemented improvements to the viewer's moving modes and image plane handling. Additionally, they added graph helper functions to create and run journeys.
structure-from-motionpythonsfm3d-reconstruction
oscarlorentzon/OpenSfM
Jan 2015 - Aug 2015
Open Source Structure from Motion pipeline
Contributions:192 pushes, 45 branches in 7 months
structure-from-motion
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