Fission

13 ms·

61.
Launch HN: Satchel (YC S18) – Guides to the Best SaaS Tools
207 points by Fission 6y ago|93 comments
62.
RP Flip(en.wikipedia.org)
1 points by Fission 6y ago|0 comments
63.
by Fission 6y ago
100%. You won't even need any extra hardware to accomplish that. However, I would encourage anyone going this route to think closely about the incentive structures behind the product they're building, and validate them with real e
64.
by Fission 7y ago
I think there was a previous discussion on this article a couple of days ago at https://news.ycombinator.com/item?id=22707365 The link there is non-paywalled.
65.
by Fission 7y ago
It's approximately the same technique. Outdoor 3D reconstruction is actually easier, because outdoors you have highly varied and detailed scenes, which enables dense feature matching and accurate dense depth map calculations. Also, yo
66.
by Fission 7y ago
This is functionally a coordinate system problem. Thankfully, it's pretty easy here. Just wait until we start getting more models for 3D data. I worked with 3D data for the longest time, and it was incredibly painful — different lib
67.
by Fission 7y ago
Unfortunately it's easily broken by a bad actor. There's no unique identifier in its POST request, which allows unlimited upvoting of a particular option. https://imgur.com/a/jnwgfRs Though maybe this is sim
68.
by Fission 7y ago
We're experimenting with the value proposition of a DIY, smartphone-based approach, independently of the 3D representation. What you're seeing is us taking the (temporary) approach that's allowed us to iterate a lot faster o
69.
by Fission 7y ago
The incentives of realtors are not aligned with those of the buyer, which manifests in the cognitive dissonance you've just experienced. On a different note — if possible, I'd love to chat about your experience with the UI. Do yo
70.
by Fission 7y ago
That's us. https://sendreality.com/318-main-st-a3d/ The biggest challenge about 3D mapping like this isn't about the tech itself, but about actually making it useful for end users. These demos are cool, but
71.
by Fission 7y ago
If someone signs an agreement to this effect, what possible job could they take after leaving Amazon that wouldn’t potentially run afoul of this clause? I’d have said “writing a newsletter making fun of AWS,” but—lo and beh
72.
by Fission 7y ago
OpenSFM is quite out of date, so it's quite inefficient and rather inaccurate (e.g. exhaustive matching is O(n^2), and there are a lot of smarter ways that are closer to O(n)) Also, one of the main steps of mesh reconstruction is depth
73.
by Fission 7y ago
How do you know that 6D AI uses deep learning to predict depth maps? I'm very familiar with their work (they're doing a great job), but the demo video you linked appears to be a photogrammetric-based approach. You can tell becaus
74.
by Fission 7y ago
The reason why is because there is no training data of the sort you describe out there. By using MVS-based approaches, they are able to get over the data hurdle by compiling a dataset of your average YouTube video, instead of creating 3D re
75.
by Fission 7y ago
Some of my friends recently put out http://gibsonenv.stanford.edu/ Full simulation with realistic 3D spaces, enables embodied agents to interact and learn from real-world spaces. Not forest trails, but a real world environ
76.
by Fission 7y ago
I personally do not believe that depth generated purely from deep learning can be used as input to photogrammetry anytime soon. Photogrammetry works exceedingly well because the depth maps that they generate are quite precise and accurate,
77.
by Fission 7y ago
Three.js is insane, in a good way. Great abstraction of WebGL, very user friendly, and surprisingly few things that it can't do, as long as you're willing to think up some workarounds if something you're doing is super uniqu
78.
Send Reality (YC S18) is hiring – help create a virtual 3D replica of the world(sendreality.com)
1 points by Fission 7y ago
79.
by Fission 7y ago
Very cool stuff! Since you're using volumetric integration/fixed voxel size, one trick to get significantly improved visual texturing quality is to low-pass/smooth the mesh right before texturing.
80.
Send Reality (YC S18) is hiring – help create a virtual 3D replica of the world(sendreality.com)
1 points by Fission 8y ago
81.
by Fission 8y ago
In practice, there are a couple of ways to handle this. In one case, EXIF data gives you a lot of information (sensor size, camera/drone make, etc.) that you can extract very good camera intrinsics from. This information can also be
82.
by Fission 8y ago
The GPS data is probably being used as a prior. The GPS metadata is accurate but imprecise, while SFM more precise. GPS is likely used for pose initialization, while SFM is then used to refine the pose.
83.
by Fission 8y ago
The ZED camera works by using two high-resolution RGB camera, finding matching points between the two, and using that to calculate depth. Because they are using high-resolution RGB cameras, they can generate very high resolution depth maps
84.
by Fission 8y ago
Deja vu -- a group of friends and I tried out something similar at a hackathon a while back, and it ended up pretty decent https://devpost.com/software/recon-4dg8qz
85.
by Fission 8y ago
I would naively think the vegetable lobby must've done a decent job, to get everyone to rebuy all of their producers' lettuce ;)
86.
by Fission 8y ago
I think that it's particularly difficult to write about why a company failed. Theranos is an extreme example, because the root cause of the company's failure is pretty clear and because there's a lot of mindshare and comment
87.
by Fission 8y ago
Startup equity rounds are typically disclosed publicly, but the valuations might not be (for a variety of reasons, one of which is that valuations can be used as a proxy for the health of the company, which the company may want to keep priv
88.
Ask HN: Do people need this tech to exist?
3 points by Fission 10y ago|3 comments
89.
Ask HN: What will happen to make VR finally explode, if anything?
8 points by Fission 10y ago|28 comments
90.
11% of Americans think that HTML is an STD(time.com)
3 points by Fission 11y ago|0 comments

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