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Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
289•theblazehen•2d ago•95 comments

Software Engineering Is Back

https://blog.alaindichiappari.dev/p/software-engineering-is-back
20•alainrk•1h ago•10 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
34•AlexeyBrin•1h ago•5 comments

Reinforcement Learning from Human Feedback

https://arxiv.org/abs/2504.12501
14•onurkanbkrc•1h ago•1 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
717•klaussilveira•16h ago•217 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
978•xnx•21h ago•562 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
94•jesperordrup•6h ago•35 comments

Omarchy First Impressions

https://brianlovin.com/writing/omarchy-first-impressions-CEEstJk
11•tosh•1h ago•8 comments

Making geo joins faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
138•matheusalmeida•2d ago•36 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
74•videotopia•4d ago•11 comments

Ga68, a GNU Algol 68 Compiler

https://fosdem.org/2026/schedule/event/PEXRTN-ga68-intro/
16•matt_d•3d ago•4 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
46•helloplanets•4d ago•46 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
242•isitcontent•16h ago•27 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
242•dmpetrov•16h ago•128 comments

Cross-Region MSK Replication: K2K vs. MirrorMaker2

https://medium.com/lensesio/cross-region-msk-replication-a-comprehensive-performance-comparison-o...
4•andmarios•4d ago•1 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
344•vecti•18h ago•153 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
510•todsacerdoti•1d ago•248 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
393•ostacke•22h ago•101 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
309•eljojo•19h ago•192 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
361•aktau•22h ago•187 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
437•lstoll•22h ago•286 comments

The AI boom is causing shortages everywhere else

https://www.washingtonpost.com/technology/2026/02/07/ai-spending-economy-shortages/
32•1vuio0pswjnm7•2h ago•31 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
73•kmm•5d ago•11 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
26•bikenaga•3d ago•13 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
98•quibono•4d ago•22 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
278•i5heu•19h ago•227 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
43•gmays•11h ago•14 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1088•cdrnsf•1d ago•469 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
312•surprisetalk•3d ago•45 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
36•romes•4d ago•3 comments
Open in hackernews

AllTracker: Efficient Dense Point Tracking at High Resolution

https://alltracker.github.io/
106•lnyan•7mo ago

Comments

jauntywundrkind•7mo ago
Crazy slick results. Nicely done team!
upghost•7mo ago
> The utility of optical flow (i.e., the instantaneous velocity of pixels [16]) toward this goal has long been obvious, yet it has remained challenging to upgrade flows into long-range tracks.

This sentence from the paper makes me feel a little bad that I don't understand why this goal is obvious. I am not tracking why we are tracking pixels.

Is this basically a competing technology with YOLO[1] or SAM[2]?

[1]: https://en.m.wikipedia.org/wiki/You_Only_Look_Once

[2]: https://ai.meta.com/sam2/

Edit: added annotations, should've done that initially

sheepscreek•7mo ago
I’m not remotely familiar with either YOLO or SAM, but want to add my own question here. Does the utility of this invention have something to do with the tracking of subjects, like auto-focus for cameras and robotics (to keep the subject in view)?
upghost•7mo ago
Apologies, jargon meanings updated.
markisus•7mo ago
Back in my earlier days working on autonomous vehicles, I dreamed of something like this.

The issue with bounding boxes is missed detections, occlusions, and impoverished geometrical information. But if you have a hundred points being stably tracked on an object, it's now much easier to keep tracking it through partial occlusions, figure out its 3D geometry and kinematics, and even re-identify it coming in and out of occlusion.

daemonologist•7mo ago
No, this performs the same task as CoTracker or TAPIR, but intended for running at a higher resolution. Point tracking is useful both for keeping track of the position of a target and for "inside-out" positioning of the camera.

YOLO is mostly concerned with detecting objects of certain classes in a single image, and SAM is concerned with essentially classifying pixels as belonging to an object or not.

ipsum2•7mo ago
Using optical flow for point tracking is obvious, not that the goal of tracking pixels is obvious.

Regarding your actual question, there's many use cases.

- Tracking players or balls in sports

- Surveillance

upghost•7mo ago
Thanks, ok. I think that was this missing piece for me -- we are not just tracking points/pixels but related points/pixels that taken together constitute an entity or identity. Yes I can see how that would be quite useful.
jcims•7mo ago
Object segmentation and tracking is such a natural and 'automatic' part of our visual perception that it's difficult to intuit how challenging it is to do with software.
thom•7mo ago
It takes freshly deployed humans a while to master, and only then with fairly high bandwidth training data, so I wouldn’t feel too bad about the complexity of implementing it in software.