Search found 189 matches

by stereomaton
Sun Aug 23, 2020 9:06 am
Forum: OpenCV, Python and other image processing
Topic: Stereo_Camera Calibration error
Replies: 32
Views: 6579

Re: Stereo_Camera Calibration error

On the PC I have opencv4 which might have fixed the "close to edges" bug compared to the version in the stereopi.
by stereomaton
Sun Aug 23, 2020 9:01 am
Forum: Other software
Topic: OctoPrint Usage: How do I get OctoPi to recognize the cameras?
Replies: 4
Views: 708

Re: OctoPrint Usage: How do I get OctoPi to recognize the cameras?

I did not see your message before. The dt-blob looked like a good start, did it solve your problem?
by stereomaton
Sun Aug 23, 2020 8:51 am
Forum: StereoPi hardware
Topic: External trigger sync
Replies: 2
Views: 477

Re: External trigger sync

This post https://forum.stereopi.com/viewtopic.php?f=10&t=106 discuss how to add a button to trigger a photo. You can replace the button by an other electronic signal that switches from high-impedance to gnd (e.g. through a transistor). It is not designed for low latency though. For lower latency, y...
by stereomaton
Wed Aug 12, 2020 9:27 am
Forum: OpenCV, Python and other image processing
Topic: Stereo_Camera Calibration error
Replies: 32
Views: 6579

Re: Stereo_Camera Calibration error

I do not have my stereopi here, but since you said that you used only the data of the repo, I tested on my PC. I had a guess on what could happen and did this test: 1) Execute 4_calibration_fisheye.py directly after a fresh clone. I get the same error. 2) Execute the way I would have, that is execut...
by stereomaton
Tue Aug 11, 2020 5:34 pm
Forum: StereoPi hardware
Topic: StereoPi Issue - Right camera input displaying magenta in hotspots
Replies: 12
Views: 1399

Re: StereoPi Issue - Right camera input displaying magenta in hotspots

I am interested to know the result of your test too. I also saw the color derive with other camera models when I did the stereomaton. In the rush of the project, we added a custom color balance after the process of raspistill and it worked well except for blown out parts. I did not pay attention to ...
by stereomaton
Fri Jul 10, 2020 3:49 pm
Forum: StereoPi hardware
Topic: Octoprint and StereoPi
Replies: 3
Views: 653

Re: Octoprint and StereoPi

I would have inverted the hard/cool qualifiers. SLP delivered with the stereopi already has a stream that can be played in browsers. The trick is to find a way to supply its address in octoprint. If you want the video independently, you can just open a new tab and enable streaming in the stereo pi w...
by stereomaton
Wed Jul 08, 2020 7:08 am
Forum: StereoPi hardware
Topic: Octoprint and StereoPi
Replies: 3
Views: 653

Re: Octoprint and StereoPi

Not done myself. What are the technical specifications of the video stream awaited by octoprint?
by stereomaton
Wed Jul 08, 2020 6:43 am
Forum: Video, photo (livestream, recording, photo capturing)
Topic: apt-get update SLP image trouble
Replies: 8
Views: 1134

Re: apt-get update SLP image trouble

My answer was perhaps too laconic. fdisk is a low level utility that modifies the partition table. You can work on such low level, but with extra caution and by knowing how the system works. The step-by-step tutorial on your link (that I did not see at first read) is okay-ish, except that it destroy...
by stereomaton
Mon Jul 06, 2020 6:38 pm
Forum: Video, photo (livestream, recording, photo capturing)
Topic: apt-get update SLP image trouble
Replies: 8
Views: 1134

Re: apt-get update SLP image trouble

On a Linux desktop with sd card reader, I used gparted with success. If you change the partition table with fdisk, you say where to search for new data but without moving the data themselves, hence the inability to boot.
by stereomaton
Mon Jun 22, 2020 1:54 pm
Forum: Your Project
Topic: IP address for StereoPi on Linux (Ubuntu 20.04)
Replies: 1
Views: 485

Re: IP address for StereoPi on Linux (Ubuntu 20.04)

(this quick answer is not elaborated and without checking, but it may help you) On Linux, the .local domain naming is done with mdns / zeroconf / avahi (three terms for your searches). Perhaps that the service is not running or the configuration is not working on your system. Note: I do not know it ...
by stereomaton
Thu Jun 18, 2020 5:28 pm
Forum: Your Project
Topic: Another Stereoscopic Camera Project
Replies: 15
Views: 5290

Re: Another Stereoscopic Camera Project

There is no magic, it is the way all networks work. On your mobile, there are several network interfaces (depending on the context, there might be "data", wifi, bluetooth, usb, vpn...). Each one has its own range of IPs (address that corresponds to the device in this network + mask to know all IPs t...
by stereomaton
Wed Jun 17, 2020 9:42 am
Forum: Cameras and video capture modules
Topic: PiCamera preview hangs
Replies: 4
Views: 1023

Re: PiCamera preview hangs

Can you provide information about the system you are trying to run this code on? I remember a bug in the white balance in Raspberry's proprietary/opaque blob that produced similar effects (freeze on preview, only one photo possible). A temporary solution is proposed in this post: https://forum.stere...
by stereomaton
Tue Jun 16, 2020 10:07 am
Forum: Video, photo (livestream, recording, photo capturing)
Topic: Python on SLP
Replies: 1
Views: 461

Re: Python on SLP

Yes, of course you can. It is basically a raspbian, so you can do most of the things that you can do with a raspberry-pi, except for the ones that require hardware parts that are not present. It may require work, though. In particular, notice that the filesystem is locked and that the partition is r...
by stereomaton
Sat Jun 13, 2020 10:00 pm
Forum: Video, photo (livestream, recording, photo capturing)
Topic: A physical button to take photos
Replies: 35
Views: 10846

Re: A physical button to take photos

Is it? You mean in my python scripts? I'm not sure I follow, on every example I can find online the shebang is always at the start of the path? Cna you send a few links where the shebang is placed differently please so I can learn better? As I said, perhaps not clearly enough, the shebang has to be...
by stereomaton
Sat Jun 13, 2020 8:36 pm
Forum: Other software
Topic: Mounting image to check original parameters
Replies: 3
Views: 1519

Re: Mounting image to check original parameters

Nice proposition.
I always forget that losetup can do this out of the box now. A few years ago, doing it with a multi-partition image was a nightmare (needed special kernel configuration if I remember well).
Sure it is far easier with your way.
by stereomaton
Sat Jun 13, 2020 9:53 am
Forum: Video, photo (livestream, recording, photo capturing)
Topic: A physical button to take photos
Replies: 35
Views: 10846

Re: A physical button to take photos

Hey all, I'm working on my own version of this, but am having trouble getting my script to run as part of run.sh The first thing I notice is that the shebang is at the wrong place. To execute a text file, the kernel needs to know with which interpreter to run it and it is described by the first lin...
by stereomaton
Thu Jun 11, 2020 3:06 pm
Forum: Your Project
Topic: Another Stereoscopic Camera Project
Replies: 15
Views: 5290

Re: Another Stereoscopic Camera Project

I'll check out the code and take maybe steal some bits :D It is shared to be useful. Did you have trouble with your SPI screen then? SPI is a "slow" bus, or more precisely it does not benefit from several accelerators for the video (partly due to poor driver for those screens and partly for a more ...
by stereomaton
Tue Jun 09, 2020 1:57 pm
Forum: Your Project
Topic: Another Stereoscopic Camera Project
Replies: 15
Views: 5290

Re: Another Stereoscopic Camera Project

I think stereomaton has come up with a solution for this, or part of one? It would be nice to hear what people's thoughts are on this concept and how they'd go about doing it. The code (and other details) of the stereomaton is available here: https://github.com/haum/stereomaton However, it is mostl...
by stereomaton
Tue Jun 09, 2020 1:11 pm
Forum: Video, photo (livestream, recording, photo capturing)
Topic: 3d pyramid hologram stream
Replies: 3
Views: 654

Re: 3d pyramid hologram stream

I never tried this kind of pyramidal display because I always thought that it was just a bad joke. In particular, there is a single image for the two eyes (per side), so it is likely just like a head-up display (2D image in the air), repeated 4 times. The shadows and movement can probably trick some...
by stereomaton
Tue Jun 09, 2020 10:50 am
Forum: Other topics
Topic: New article published
Replies: 6
Views: 19018

Re: New article published

It looks better. The page is still long to load, but at least we can start to read it. It looks like you can have a big gain by lazy loading the youtube iframes. I was not sure at first, but I found a way to block them and my loading time changed from 8s (or 16s depending on where I consider all fin...