Bell System

social.omar.website

Profile for Omar Rizwan. Username @omar, social.omar.website. Role: admin

About

"The program should, in some way, expand the concept of what computer paint programs are, as well as what mark making can be."

Joined on Dec, 2022. 669 posts. Followed by 213. Following 129.

Recent posts

Omar Rizwan . @omar,

Debugging 3D calibration... had weird issues where it produced homographies with det(H) < 0 which totally messed up the rotation and translation (you'd have a couple calibration poses that have z < 0, so 'behind the camera' or 'behind the projector' and reflected, which I guess makes mathematical sense but not physical sense lol). I just set H = -H and then it fixed everything

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Omar Rizwan . @omar,

All computer vision stuff is like

Step 1. Do some linear algebra that makes logical sense, uses a rational scientific model of how we believe the world works, looks reasonable

Step 2. The result of Step 1 is basically garbage. Feed it into a nonlinear optimizer to make it actually good

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Omar Rizwan . @omar,

stubbornly calling it `rotationVectorToRotationMatrix` instead of `Rodrigues`

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Omar Rizwan . @omar,

(I'm sure people who've actually used CAD software know this:)

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