qchris

41 ms·

361.
by qchris 6y ago
Just a quick heads-up that Joseph Redmon isn't working on the development on Darknet any longer, and the YOLO fork by AlexeyAB [0] (now on YOLOv4) is one people should also consider using moving forward[1]. [0] https://githu
362.
by qchris 6y ago
You're right, and if I came across implying that was the case for this particular dam removal, I apologize for the miscommunication. On the other hand, the rate of dam removal in the United States has increased, and some of them (espec
363.
by qchris 6y ago
That's a fair point. In North America, one of the other things that we should probably consider is the American beaver, which can help with this sort of thing naturally, if they're allowed to. Their activity needs a little managem
364.
by qchris 6y ago
If anyone's interested in rivers and dams, and some of history and influence they've had on the formation of the US (and vice versa), there's a great book called The Source: How Rivers Made America and America Remade Its Riv
365.
by qchris 6y ago
As part of my work, I occasionally need to deal with a wireless comms setup that moves data from a roof-mounted RF antenna down into the network. Instead of having to carry my laptop up to the roof with me (sounds simple, but oddly enough d
366.
by qchris 6y ago
Except it does do that. It's called persistent maps, and it's how the feature where you can say "Go vacuum the kitchen" works[0]. Also, I think you're underestimating both how valuable and complicated VSLAM is. Sure
367.
by qchris 6y ago
Depending on the architecture, though, it's possible to export the trained model into a stand-alone file that can be imported by somebody else's program, de-coupling the network's training data from model it produces. This is
368.
by qchris 6y ago
Oh, neat, looks like this debate has reached ad hominem attacks. VSLAM is computer vision. Full stop. Here's an article about it in a Springer Computer Vision guide [0]. I don't know what your personal definition requires for that
369.
by qchris 6y ago
A submersible time-lapse camera set-up using a RPi Zero, battery pack, and camera. I was working on repairing an inflatable dinghy earlier (over a dozen individuals patches!) and finally got it working and moving with a electric trolling mo
370.
by qchris 6y ago
Really neat to see an application in the wild written in Zig, but it makes a lot of sense why it would be used for a cross-platform target. I've got my PinePhone on pre-order, I'll have to give doing something similar a shot when
371.
by qchris 6y ago
Which plant? Which Roomba? According to the materials released by Qualcomm in 2018 (by which point, the Roomba i7 would have already have had lines in that plant), the processor used is a ARQ8009, a quad-core ARM processor commonly used in
372.
by qchris 6y ago
I definitely agree he had a mathematician working with him to help, but am not sure it was his wife. I think that there's varying interpretations of her contributions to A. Einstein's work. If I'm remembering correctly, Walte
373.
by qchris 6y ago
Just to be clear, there's not a subtext to this question (and I'm less that two years out of school so I'm pretty sure it doesn't apply to me anyway), but would you mind laying out your approximate ranges for mid-career
374.
by qchris 6y ago
I don't like to be dismissive, but your suspicion isn't well-founded and is very likely based on little or no background research on the topic. If you had, you'd have found that SLAM and VSLAM as a subset is a well-defined ca
375.
by qchris 6y ago
It depends on the model, but I think that your impression of Roomba, either through experience or the technology that the author of this article presented is really out-of-date. Even on past models, they have Visual Simultaneous Location an
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Writing CUDA Kernels in Rust for GPGPU(users.rust-lang.org)
3 points by qchris 6y ago|0 comments
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by qchris 6y ago
I don't think so--it doesn't look like the rattling of the sphere is caused by flow around the sphere itself, but rather by the rate of the displacement/return to equilibrium of the sphere over the opening of the quartz tube.
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by qchris 6y ago
Measuring low-force, high-temp flows like can be pretty difficult, especially in academic labs where researchers are typically pretty limited in terms of instrumentation. I don't have 1-to-1 experience in this field but have briefly wo
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by qchris 6y ago
I don't think that's necessarily a useful question at this point, because some of the basic thermodynamic assumptions don't work out for deciding between batteries vs. using a fuel-burning generator. Normally, it's prett
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by qchris 6y ago
I sort of figure that got put in there for context, because Rust code so commonly gets multi-threaded in a serious way because of the borrow checker and drop-in parallel libraries. It makes it a little bit more clear that, yes, this person
381.
by qchris 6y ago
I don't disagree with you, but I do want to explicitly call out how uncommon it is for most people to be able to afford a car in cash. A decent used car, say 3-4 years old with 40-50,000 miles on it with a certified inspection/war
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by qchris 6y ago
Just as a counterpoint, I like System76's design choices. I've used Pop!_OS on my personal computer, and I consistently use it professionally because of how nicely it works for getting CUDA running on NVIDIA-enabled systems. I def
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by qchris 6y ago
Yeah, this is a hard no from me. It also provides me with little confidence that the data itself is particularly useful, since the terms basically prevent anyone from publicly doing any kind of cross-validation. Scientific peer review didn&
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by qchris 6y ago
You wouldn't happen to have been part of the group that came over to Santa Barbara a while back, were you? I worked with Erin and Sean to get some of the sidescan data on the test lines out here with a REMUS 100 one afternoon.
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by qchris 6y ago
We're still working on the first draft of our results for publication on the subsurface imaging side of things, so there's unfortunately not a paper I can point you to yet, but an overview of the project at a high-level can be see
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by qchris 6y ago
I appreciate that, I think they have a lot of promise as well! I do think things are probably a bit early to be trying to do an AMA (I feel that they're often as much Q&A as they are a pitch about the topic itself), and both the te
387.
by qchris 6y ago
I'm going to jump in here as someone who is using object detection, and currently working on getting a Darknet detector in particular up and running, in what I'd like to think is a positive way. I'm a researcher working on a
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by qchris 6y ago
This is a fantastic summary! In the United States, I believe that the Pacific Northwest and parts of the Maine coastline were also considered, but for many of the reasons above, I don't think any of those projects really achieved criti
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by qchris 7y ago
This has been my experience as well. I do a lot of work on a computer running 18.04 with an i5-5300U (2 core, 4 thread), and the change between having an SSD instead of an HDD was probably the single largest performance improvement I'v
390.
by qchris 7y ago
It took me a little while to get my system down, but once I'd figured out how to build and call in Rust libraries using CMake and the the C ABI, I do my best to write as little raw C++ as I can. Using the Rust test framework, limiting

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