midjji

8 ms·

31.
by midjji 2y ago
Heh yeah that most deep learning stuff degrades massively if you switch from one camera to another model is telling. But its still important for most things that arent trivial dl.
32.
by midjji 2y ago
Rectification is not always the best choice, its a simple one for data processing in some cases, but often limiting. Keeping to a simple model is much more important.
33.
by midjji 2y ago
Calibrate absolute scale to a margin where people can no longer tell most likely. Its a huge difference between that and you can do stereo at half a kilometer.
34.
by midjji 2y ago
I disagree strongly, getting a coarse calibration which could be used for some stuff is one thing, getting a accurate one is another.
35.
by midjji 2y ago
I guess you havent actually tried to do this, or you would emphasis the crucial important of, you still need a good initial guess, you still need to know the sync, and you still need data from the right environment with the right motions, a
36.
by midjji 2y ago
Thank you for trying, I thought about it myself, after all someone has to teach people so I dont get another, yeah we collected the dataset with a calibrated camera rig and here it is. What do you mean what was the calibration?
37.
by midjji 2y ago
You cant compare a real technical field with hundreds of years of real world use to some social science nonsense. Linguists have never made useful or testable predictions of any kind. Geometric computer vision has been refining camera calib
38.
by midjji 2y ago
Transformers and deeplearning was reconfigured to be in 2D for GO. Trying to apply 1D variants did not work, and people did try.
39.
by midjji 2y ago
Thank you for keeping us old school computer vision guys in buisness. If deep learning folks actually used good calibration, and didnt constantly argue eh an offset of a few pixels does not matter, they might actually be competetive with cl
40.
by midjji 2y ago
Yeah, you can do live simultaneous calibrations and reconstructions and localizations. Its a difficult problem, and a slightly different one for each phone, but there are plenty of variants which work for single phone models. The imu is key
41.
by midjji 2y ago
Richer models that fit better are often a trap, in particular for beginners. Use the simplest model you can get away with. Unless you know what you are doing, most people are better of with a simpler model as it will be more robust to obser
42.
by midjji 2y ago
Opencv is fine for basic models like the most popular one. This one is also sufficient in most cases, I have used it for subpixel 400m stereo with a 40cm base, visual odometry, high end 3d reconstruction etc, it also has fully functional va
43.
by midjji 3y ago
A better way to tell if your password is secure is to download a gpu dictionary password cracker, and add in a couple of the big leaked password dictionaries, get at least the big ones so you have a few billion passwords and run it for a f
44.
by midjji 3y ago
Why would anyone pick speak friend as password, mellon is the password?
45.
by midjji 3y ago
This is correct, its not needed for good performance, and most things websites require cookies for dont require the disclaimer, with two caveats. First its pretty clear from the law what requires it, but what if you are wrong, what if corp
46.
by midjji 3y ago
I'm sure they will claim it, but it won't work. EU is a vindictive bitch when it comes to enforcing stuff like this.
47.
by midjji 3y ago
% is a surprisingly slow way to do so compared to x & 1.
48.
by midjji 3y ago
FCC the regulator agency charged with regulating telecom companies once again fails to regulate telecom companies. Despite a trivial and permanent remedy beeing available, e.g. fine the telecom companies in significant excess of what they m
49.
by midjji 3y ago
These are the same assholes that let you use a email containing a + in the email. e.g. name+shittyuplay@gmail.com, and Automatically log you in after registration, so you can register and buy games. Then dont allow you to login or use the
50.
by midjji 3y ago
I think its more along the lines of things are prototyped without types, the proof of concept mostly works, then people realize that types are needed to reduce bugs, improve speed, and create a maintainable base as the project grows. What p
51.
by midjji 3y ago
Arguably C is losely typed rather than strictly typed. int for example is some integer type, dont worry about which one, and people keep reinventing this too. Sometimes you want stricter, sometimes more loose, but most languages have a swee
52.
by midjji 3y ago
A single number to represent a rotation in 2D, vs a single number to represent rotations in 4D for which 2D, and 3D are special cases. Compared to 3 numbers and a series of operations which happen to rotate a 3D vector. Regardless I think e
53.
by midjji 3y ago
The math.h cos from the article counterexample is pretty trivial, so can you give an example? I doubt linear interpolation between the 8 values is enough, but cubic probably would be. This would also be close to e.g. 8 third order taylor ap
54.
by midjji 3y ago
The equivalent of polar coordinates in 3d are quaternions. Which do not have gimbal lock, the problem only occurs for euler angles(which should never ever be used for anything ever).
55.
by midjji 3y ago
A good idea is to not to compute the values of cos from 0-2pi, but further reduce the range, using cos(a) = cos(-a), and cos(2a) = 1-2cos(a), or cos(a+pi/4) =... So we really only ever need to be able to compute cos in the range 0-pi
56.
by midjji 3y ago
Yes, and had they continued to insist, showed their guns, and refused to leave he would have gotten away with getting a weapon and shooting them. But most homeowners are both unwilling and unable to take down a couple of armed thugs, assumi
57.
by midjji 3y ago
Its called fait accompli. If I go to someone who stole my bike, beat them and take the bike back, yeah I do get to keep the loot, even if they prosecute me, which is unlikely, and even if they succeed in prosecuting me which is also unlikel
58.
by midjji 3y ago
Those protections are not the only reason the police are comfortable doing things like that, those protections are there, because the justice system could not get police to stop doing that regardless, and in extraordinarily rare cases its j
59.
by midjji 3y ago
They dont really, they are just an offbrand for securitas who bought up the trademark and brand after they went under.
60.
by midjji 3y ago
Nothing that isn't stories by friends working for securitas (the main company for which pinkerton is a brand), or anecdotes. I am certain I could find a story like that just by googling for it, but real statistics are what are interest

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