Search found 160 matches

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: 84

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: 3448

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: 172

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: 80

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: 6751

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: 853

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: 6751

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: 3448

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: 3448

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: 117

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: 8810

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...
by stereomaton
Wed May 20, 2020 5:06 pm
Forum: The art of stereoscopic photo
Topic: Low Profile (staggered) Stereovision?
Replies: 10
Views: 2114

Re: Low Profile (staggered) Stereovision?

I thought of this geometric problem again, and I came to something that I knew but missed in my previous answers. Actually, you can totally align the images produced by the "staggered disposition", but the result will probably not be what you want. After alignment, the disparity will denote depth in...
by stereomaton
Wed May 20, 2020 2:12 pm
Forum: Other topics
Topic: New article published
Replies: 6
Views: 8810

Re: New article published

I just tested on good mobile connection (30Mbps) and it took 55s today. There must be something in the script of the blog. The problem is that partial content is not displayed so that we cannot start reading before the end of load.

Anyway, I already read it now. :-)
by stereomaton
Tue Apr 28, 2020 12:24 pm
Forum: Your Project
Topic: is there a way to connect 4 cameras?
Replies: 1
Views: 1038

Re: is there a way to connect 4 cameras?

The StereoPi itself has two dedicated camera ports, and you can connect only one camera per port. One solution for your Nimslo-like shot would be to use two StereoPi boards working together. A simple and dirty way would be to use an external button as described in this thread and connect the button ...
by stereomaton
Mon Apr 27, 2020 4:19 pm
Forum: OpenCV, Python and other image processing
Topic: Trouble with stereoPi calibration
Replies: 2
Views: 1200

Re: Trouble with stereoPi calibration

[Suggestions for realizator] In the linked function, the vector ekk looks like a vector of the absolute projection errors (I do not remember which projections are supposed to be done, I suppose one is left points on right image given the current parameters relating the two cameras, but for sure ekk ...
by stereomaton
Mon Apr 27, 2020 2:40 pm
Forum: StereoPi hardware
Topic: New guide: StereoPi used as USB device
Replies: 13
Views: 2386

Re: New guide: StereoPi used as USB device

I come back to the forum after you had a long discussion. I did not understand well how was the setup and I have the feeling that there was a confusion in the addresses to ping, but fortunately the problem is solved. When I tested it, I changed this file from an already existing one I had on my setu...
by stereomaton
Fri Apr 24, 2020 7:23 pm
Forum: StereoPi hardware
Topic: New guide: StereoPi used as USB device
Replies: 13
Views: 2386

Re: New guide: StereoPi used as USB device

These addresses are the APIPA range, which denotes that the PC cannot communicate with the DHCP server. If I understand well, you used the StereoPi as device in both cases, and a Windows PC as host, and then a RPi4 as host because the first case did not work. In both cases, you got APIPA address on ...
by stereomaton
Wed Apr 22, 2020 8:31 am
Forum: StereoPi hardware
Topic: WiFi dongle not connecting to Windows mobile hotspot
Replies: 2
Views: 901

Re: WiFi dongle not connecting to Windows mobile hotspot

WiFi issues are always hard to debug. Since your setup works with other beacons, I would first check the channels: depending in the regions, different channels are allowed and your phone might emit in a channel that your dongle do not scan. For the troll, Windows is known to be insecure by default a...
by stereomaton
Wed Apr 15, 2020 8:11 am
Forum: Your Project
Topic: DIY VR headset for the StereoPi. 10 ms latency for just $135
Replies: 4
Views: 2116

Re: DIY VR headset for the StereoPi. 10 ms latency for just $135

The H264 encoder is limited in definition (I found about 2048×1350) and you exceed it with your configuration. Since you do not save the file, you can try to use the mjpeg encoder (-cd mjpg). Also check the camera modes, because you may have a trade off to do between fps and definition. Note: this p...
by stereomaton
Sat Apr 11, 2020 8:22 pm
Forum: Other software
Topic: Manual wifi configuration with buster
Replies: 0
Views: 1942

Manual wifi configuration with buster

I had problems to connect with my WiFi dongle with the buster image. It looks like the wlan0 interface is created by the system, but there is a problem with the GUI and more probably with the wpa/dbus gateway. I suspect that it is linked with the fact that this dongle uses a "wext" driver not handle...