Hacker News: dima55

New comment by dima55 in "NASA Artemis II moon mission live launch broadcast"

dima55 — Wed, 01 Apr 2026 19:23:41 +0000

https://www.bbc.co.uk/news/live/c4g4ygw0r02t

New comment by dima55 in "Log File Viewer for the Terminal"

dima55 — Tue, 24 Mar 2026 06:34:26 +0000

I use vnlog and feedgnuplot to massage and plot data on the console all the time. It's even less than a tui, but might be what you want.

New comment by dima55 in "Show HN: Lensboy – Lightweight camera calibration with spline distortion models"

dima55 — Mon, 02 Mar 2026 19:57:37 +0000

Hello! I'd love it if this and mrcal could work together. Do you support mrcal .cameramodel files? If not, can you do that? Is your splined representation compatible with the mrcal splined stereographic model? If not, can it? Is your splined lens representation better in some way? If so, should mrcal use some of that logic? I didn't see any documentation about it. If you think the mrcal distribution methods could be improved, and are willing to help improve it, I would be very amenable. Let's collaborate to make both projects better!

New comment by dima55 in "Why High FOV Sucks – Fixing It with Panini Projection"

dima55 — Tue, 24 Feb 2026 21:49:26 +0000

I would love for us to move past the idea that non-pinhole projections have "distortion", and we should strive to remove this "distortion" by reprojecting stuff to pinhole models. In practice, ALL projections distort straight lines and/or shapes and/or sizes, so if you use the pinhole projection everywhere, your images look like crap (see iphone wide-lens camera output for instance). Most of the normal non-pinhole projection functions work fine for wide lenses, while behaving like a pinhole lens with long lenses: https://en.wikipedia.org/wiki/Fisheye_lens#Mapping_function

New comment by dima55 in "HeyWhatsThat"

dima55 — Thu, 12 Feb 2026 16:36:30 +0000

https://caltopo.com

New comment by dima55 in "HeyWhatsThat"

dima55 — Thu, 12 Feb 2026 08:25:04 +0000

This is real clunky from a browser. https://caltopo.com can do this from a map (right-click on the viewpoint, point-info, simulated view). The horizonator (https://github.com/dkogan/horizonator/) is a hackable implementation; has a FAST local gui, and can easily be extended to do other stuff.

New comment by dima55 in "U.S. jobs disappear at fastest January pace since great recession"

dima55 — Sat, 07 Feb 2026 19:25:52 +0000

Macro-economic policy is political. I'm sorry.

New comment by dima55 in "Mrcal 2.5 Released"

dima55 — Mon, 19 Jan 2026 00:20:40 +0000

This is a new release of the mrcal camera calibration and lens modeling library.

Mrcal 2.5 Released

dima55 — Mon, 19 Jan 2026 00:20:40 +0000

Article URL: https://notes.secretsauce.net/notes/2026/01/18_mrcal-25-released.html

Comments URL: https://news.ycombinator.com/item?id=46673619

Points: 2

# Comments: 1

New comment by dima55 in "Pole of Inaccessibility"

dima55 — Thu, 08 Jan 2026 23:45:24 +0000

Fun! If you want to compute these yourself and/or if you like hiking into the mathematically middlest-of-nowhere location, here's a good blog post: https://notes.secretsauce.net/notes/2015/05/06_poles-of-inac...

New comment by dima55 in "Python 3.15’s interpreter for Windows x86-64 should hopefully be 15% faster"

dima55 — Thu, 25 Dec 2025 23:18:23 +0000

Look at pyfltk also. I haven't used the windows builds, but it's real nice on GNU/Linux.

New comment by dima55 in "Debian's Git Transition"

dima55 — Mon, 22 Dec 2025 17:55:18 +0000

Huh? I contribute to Debian; I don't aggressively patch anything. You can too.

New comment by dima55 in "Debian's Git Transition"

dima55 — Mon, 22 Dec 2025 17:53:51 +0000

Moving from a patch stack maintained by quilt to git is what this article is about.

New comment by dima55 in "Debian's Git Transition"

dima55 — Mon, 22 Dec 2025 17:07:40 +0000

Lots. Because many upstream projects don't have their build system set up to work within a distribution (to get dependencies form the system and to install to standard places). All distros must patch things to get them to work.

New comment by dima55 in "Autoland saves King Air, everyone reported safe"

dima55 — Mon, 22 Dec 2025 03:45:26 +0000

Yeah, have they ever actually used a garmin product? The hardware and the sound effects are excellent. Everything else is barely functional.

New comment by dima55 in "Putting email in its place with Emacs and Mu4e"

dima55 — Wed, 10 Dec 2025 16:28:56 +0000

I use the `vnlog` and `feedgnuplot` shell tools HEAVILY to do data analysis and visualization. In emacs, these work well in shell-mode or in any buffer with `shell-command-on-region` (M-|). Not strictly emacs, but works great.

New comment by dima55 in "How I am deeply integrating Emacs"

dima55 — Thu, 06 Nov 2025 19:05:45 +0000

Maybe it's a fallacy and maybe it isn't. But I often hear people say "I don't use tool X because it doesn't actually increase my productivity". X is emacs or debuggers or profilers or Linux or version control or code comments or whatever. And after observing such people work over time I decided that most of them are just trying to justify their laziness. YMMV.

New comment by dima55 in "Pixi: Reproducible Package Management for Robotics"

dima55 — Tue, 04 Nov 2025 02:38:12 +0000

The packaging is only one of ROS's numerous issues. Just do it yourself.

New comment by dima55 in "Pixi: Reproducible Package Management for Robotics"

dima55 — Tue, 04 Nov 2025 00:23:08 +0000

This is the ROS way: add more layers of crap on it until it sorta kinda works sometimes. If you want "reproducible package management", use Debian. ROS1 is already in stock Debian. Some of ROS2 is as well. If you actually want ros to suck less, please package the reset of ROS2, and push it to Debian.

New comment by dima55 in "Introducing architecture variants"

dima55 — Sat, 01 Nov 2025 04:59:25 +0000

Exciting. I just looked for docs about these new features, and can't find anything. Can you point us to these? Thanks!