sz3

7 ms·

1.
by sz3 3y ago
I feel like we're stretching the analogy pretty thin here.
2.
by sz3 3y ago
We don't have the time to sit back and let epistemic knowledge wash over us. We know more or less what needs to happen (less sunlight in, more heat out). All attempts to resolve the situation require taking some risk, and it'll be
3.
by sz3 3y ago
Well, hopefully we have some time to practice first. Because we're the only person in the room and the patient is bleeding out.
4.
by sz3 3y ago
There is no alternative. We have "aggravated the situation" (as you put it) beyond recovery. Doing nothing will now surely lead to an unacceptable outcome. We are going to have to fix it, or resign ourselves to a huge shrinkin
5.
by sz3 3y ago
Putting aside "a space-based solar sunshade represents a technological leap forward and would be really cool" -- which I think speaks to me on an emotional level -- I do think this might be the single most powerful technological w
6.
by sz3 4y ago
Aha! I was wondering where the github stars were coming from. :) I did get a kick out of this from the OP: > Binary: Born from YouTube compression being absolutely brutal. RGB mode is very sensitive to compression as a change in even one
7.
by sz3 4y ago
The N900 was everything I ever wanted. :(
8.
by sz3 4y ago
Huh! Thanks for the correction. That makes a lot of sense -- I have some more reading to do...
9.
by sz3 4y ago
Different keys. For example, you might currently be using a public/private keypair for 4096-bit RSA. That keypair (by definition) only works for the RSA key exchange algorithm. Likewise, an x22519 keypair is for the x25519 key exchange
10.
by sz3 5y ago
I would put celery in that class of software that's good enough to be useful, but enough trouble that you'll never be truly happy with it. We got a lot of mileage out of it (in a past life) before finally moving our job scheduling
11.
by sz3 5y ago
At the risk of being reductive: Make more of our software copyleft? Even weak copyleft? As a thought experiment, imagine how the modern web might've played out if KHTML was released under the MIT license instead of the LGPL? Bearing in
12.
by sz3 5y ago
As far as yesterday was concerned, Edwardsville (and neighboring areas) knew they were in the line of fire by 8PM local time. The tornado hit the facility at ~8:40. Source: my phone blew up with 3+ emergency alerts starting at around 8. (he
13.
by sz3 6y ago
I don't think I do? I'm not 100% sure I understand your example. Is it RDP server (remote) -> RDP client (local) -> cell phone?
14.
by sz3 6y ago
The simple answer is: 4-color (standard): 7500 bytes 8-color: 8750 bytes monochrome: 5000 bytes Those numbers are with the standard, fairly high ECC setting (~20% of the image) that I settled on for video-based transfer. If we want to be mo
15.
by sz3 6y ago
Right now, it's both. The decoder has a lot of image processing work to do (intriguingly well-suited for the GPU), and also lots of popcnts. I've optimized it a fair bit, but there's probably some tricks I still need to learn
16.
by sz3 6y ago
Multiple sizes isn't a bad idea. I'm not sure I know enough about what sizes would be appropriate though. :) Transfers getting stuck like that usually is an indication that the decoder can't reliably find the 3+1 corner pat
17.
by sz3 6y ago
Well, as for acks specifically -- cimbar itself doesn't really need them, thanks to fountain codes [0]. But I can imagine a reverse (request?) channel being useful, if it had enough bandwidth for the desired application. :) As /
18.
by sz3 6y ago
Probably a good idea. Noted.
19.
by sz3 6y ago
Definitely. I had to draw a line somewhere for an initial "does anyone care about this?" release, so there's some rough edges here. There are a number of loose ends that I'd like to look into down the road, and more flex
20.
by sz3 6y ago
Well, there's diminishing returns in format shifting. The encoded barcode contains various types of quasi-redundant visual information (e.g. error correction codes) to allow decoding to happen, so for audio-based transfer it'd be
21.
by sz3 6y ago
I like the way you think. :) Though I think 720p is towards the low end of resolutions this'll work on -- the cimbar code itself is 1024x1024, and while there's some wiggle room (hamming distance between the symbols), in my experi
22.
by sz3 6y ago
Hmm... no, but that's a good idea!
23.
by sz3 6y ago
Hello all, You've seen QR codes, maybe Microsoft HCCB [0], maybe jabcode [1] – well, here's a prototype of something new for the pile. :) I saw txqr [2] a while back and was impressed, but also curious about how much throughput wa
24.
Show HN: Cimbar – File transfer via color barcodes and the Android camera(github.com)
87 points by sz3 6y ago|26 comments