dllu

14 ms·

151.
by dllu 4y ago
No idea, but if you have only two backslashes instead of four, the matrix would appear as a single row, like [a bc d]. That said, \\begin renders the same as \begin.
152.
by dllu 4y ago
Finally a long-awaited feature. Works nicely in dark mode too. However, it simply uses MathJax. Also there are some minor annoyances. For example you need to escape the backslashes, so it takes 4 backslashes to make a newline in your matrix
153.
by dllu 4y ago
When compiling dllup to LaTeX, it is possible to just use \label but I haven't implemented that functionality in dllup to html yet. You can also consider pandoc's markdown flavor that supports equations and references: https:&#x2
154.
by dllu 4y ago
Thanks, very useful feedback!
155.
by dllu 4y ago
I wrote another blog post on the topic, with lots of pictures and simple explanations: Intro to Lie groups for rigid rotations https://daniel.lawrence.lu/blog/y2021m07d14/
156.
by dllu 6y ago
I made an implicit plotter here: https://daniel.lawrence.lu/blog/y2016m02d08/ Your function works fine here and my blog post contains many examples of other cool functions to plot, including the pathological
157.
by dllu 6y ago
A Yuval Noah Harari quote I quite enjoy: > Indeed, money is probably the most successful fiction ever invented by humans. Not all people believe in God, or in human rights, or in the United States of America. But everybody believes in mo
158.
by dllu 6y ago
The dual of a geodesic polyhedron, e.g. an icosahedron whose faces have been subdivided is in fact a common and excellent choice for geospatial applications, with https://github.com/uber/h3 being a good implementation.
159.
by dllu 6y ago
Yes, I am not disagreeing with you. Sony's mirrorless bodies are presently the best and the Sony GM lenses also have the best-in-class image quality, surpassing DSLR lenses. For example the Sony GM 135mm f/1.8 is the sharpest avai
160.
by dllu 6y ago
There are still several companies making lenses for the system. For example, Cosina has a lineup of high quality manual-focus M43 lenses such as the recently released Voigtlander Nokton 60mm f/0.95: http://www.cosina.co.jp&#
161.
by dllu 6y ago
> Canon gets a lot of hate and is looked down because of their mirrorless systems. The new Canon RF lenses are pretty amazing (albeit expensive) though, and the new Canon mirrorless bodies such as the R5 are shaping up to be highly compe
162.
by dllu 6y ago
They are not using Sony sensors. They are using CMOSIS sensors (which has been acquired by ams). Fujifilm, Nikon, and Panasonic are using Sony sensors, however.
163.
by dllu 6y ago
Indeed. I use my Sony a7r II as a webcam on Linux using gphoto2 with v4l2loopback: https://daniel.lawrence.lu/blog/y2020m03d31/ sudo modprobe v4l2loopback devices=1 exclusive_caps=1 card_label="pupcam&q
164.
by dllu 6y ago
Bivectors are an elegant choice for dealing with rotations be cause they are isomorphic to skew-symmetric matrices, which are the Lie algebra of the special orthogonal group SO(n). The Lie group SO(n) is also known as n-dimensional rotation
165.
by dllu 6y ago
I have seen people coming to C++ from Python use "and", "or", and "not" in their if-statements :)
166.
by dllu 6y ago
huh. Interestingly, for "and", "or" and "not", iso646.h already defines C alternative tokens: https://en.wikipedia.org/wiki/C_alternative_tokens
167.
by dllu 6y ago
While technically right, you'll never be able to get anywhere in a big city if you drive like that.
168.
by dllu 7y ago
He discusses this both in his very detailed Russian post as well as on GitHub: https://github.com/iliasam/OpenTOFLidar/wiki/Laser-Safety
169.
by dllu 7y ago
The colours are based on lidar intensity, i.e. how much light is bounced back from a surface. This depends on the reflectivity. That's why it can see lane markings and even murals on the wall: https://www.youtube.com/wa
170.
by dllu 7y ago
Sorry about that. Fixed the link now.
171.
by dllu 7y ago
I am a big fan of HSLuv and I use it for generating colourschemes for lidar point clouds: https://daniel.lawrence.lu/public/colortransform/#0_2584_964... which is used for videos such as this: https://w
172.
by dllu 7y ago
At 865 nm, laser eye damage is due to the laser being focused by your eyeball into a small spot on your retina. This is in contrast to other wavelengths, like 1550 nm, which do not get focused, but can instead damage the surface or your eye
173.
by dllu 7y ago
Lidars can interfere but somewhat less than other types of active sensors. First of all, the detector only needs to be on for a microsecond or two, and it's unlikely for two sensors to be scanning at the same microsecond. Second, laser
174.
by dllu 7y ago
You would also need a new version of LLVM.
175.
by dllu 7y ago
It is open source, but it is not free and open source [1]. [1] https://en.wikipedia.org/wiki/Free_and_open-source_software EDIT: nevermind, I guess it's just source-available software.
176.
by dllu 7y ago
Interesting links for studying RPS AI: * http://www.rpscontest.com/ * https://daniel.lawrence.lu/programming/rps/ Playing rock paper scissors is about predicting what the opponent will play next g
177.
by dllu 7y ago
It's competing against machines such as the Boxx dual-CPU workstations, which start at $8000 [1]. I can see movie studios and such shelling out the big bucks to buy these for their 3D modellers, but only the super rich would buy one fo
178.
by dllu 7y ago
The consumer-level Flexscan series are much cheaper. The EV3285, for example, is retailing for $1800 on BHPhoto.
179.
by dllu 7y ago
There is a Fuji G 110mm f/2 prime which is autofocus. Its image quality is sublime.
180.
by dllu 7y ago
The eye safety limit for 1550 nm is thousands of times higher than for visible light or near infrared. https://commons.wikimedia.org/wiki/File:IEC60825_MPE_J_nm.pn...

More ›