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.
Search found 215 matches
- Sat Jun 13, 2020 8:36 pm
- Forum: Other software
- Topic: Mounting image to check original parameters
- Replies: 3
- Views: 15241
- Sat Jun 13, 2020 9:53 am
- Forum: Video, photo (livestream, recording, photo capturing)
- Topic: A physical button to take photos
- Replies: 37
- Views: 83476
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...
- Thu Jun 11, 2020 3:06 pm
- Forum: Your Project
- Topic: Another Stereoscopic Camera Project
- Replies: 15
- Views: 25879
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 ...
- Tue Jun 09, 2020 1:57 pm
- Forum: Your Project
- Topic: Another Stereoscopic Camera Project
- Replies: 15
- Views: 25879
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...
- Tue Jun 09, 2020 1:11 pm
- Forum: Video, photo (livestream, recording, photo capturing)
- Topic: 3d pyramid hologram stream
- Replies: 3
- Views: 2882
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...
- Tue Jun 09, 2020 10:50 am
- Forum: Other topics
- Topic: New article published
- Replies: 6
- Views: 31374
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...
- Wed May 20, 2020 5:06 pm
- Forum: The art of stereoscopic photo
- Topic: Low Profile (staggered) Stereovision?
- Replies: 10
- Views: 26228
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...
- Wed May 20, 2020 2:12 pm
- Forum: Other topics
- Topic: New article published
- Replies: 6
- Views: 31374
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.
Anyway, I already read it now.
- Tue Apr 28, 2020 12:24 pm
- Forum: Your Project
- Topic: is there a way to connect 4 cameras?
- Replies: 5
- Views: 14638
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 ...
- Mon Apr 27, 2020 4:19 pm
- Forum: OpenCV, Python and other image processing
- Topic: Trouble with stereoPi calibration
- Replies: 2
- Views: 11753
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 ...
- Mon Apr 27, 2020 2:40 pm
- Forum: StereoPi hardware
- Topic: New guide: StereoPi used as USB device
- Replies: 13
- Views: 14180
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...
- Fri Apr 24, 2020 7:23 pm
- Forum: StereoPi hardware
- Topic: New guide: StereoPi used as USB device
- Replies: 13
- Views: 14180
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 ...
- Wed Apr 22, 2020 8:31 am
- Forum: StereoPi hardware
- Topic: WiFi dongle not connecting to Windows mobile hotspot
- Replies: 2
- Views: 3262
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...
- 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: 13684
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...
- Sat Apr 11, 2020 8:22 pm
- Forum: Other software
- Topic: Manual wifi configuration with buster
- Replies: 0
- Views: 24696
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...
- Fri Apr 10, 2020 5:25 pm
- Forum: OpenCV, Python and other image processing
- Topic: [solved] can't boot with non-slp c++ python open-cv image
- Replies: 8
- Views: 8630
Re: [solved] can't boot with non-slp c++ python open-cv image
This link looks good, and the stereopi starts.
It is quite surprising that there are some incompatibilities like that in such old format. It really looked like a transfer error to me, that's why I asked for the checksum of the archive (.zip file). Too late, I did not kept the file anyway.
It is quite surprising that there are some incompatibilities like that in such old format. It really looked like a transfer error to me, that's why I asked for the checksum of the archive (.zip file). Too late, I did not kept the file anyway.
- Thu Apr 09, 2020 4:13 pm
- Forum: OpenCV, Python and other image processing
- Topic: [solved] can't boot with non-slp c++ python open-cv image
- Replies: 8
- Views: 8630
Re: [solved] can't boot with non-slp c++ python open-cv image
Using the previous image "Raspbian Buster OpenCV Image (Python code)" (stereopi-opencv-20190912.zip), even originating from Google Drive as the other image, seems to work well both with unzip and 7z (same checksum).
It boots [but I forgot that I needed a mouse to start with it ]
It boots [but I forgot that I needed a mouse to start with it ]
- Thu Apr 09, 2020 3:20 pm
- Forum: OpenCV, Python and other image processing
- Topic: [solved] can't boot with non-slp c++ python open-cv image
- Replies: 8
- Views: 8630
Re: [solved] can't boot with non-slp c++ python open-cv image
It does not work better. $ 7z e cpp-python-2020-02-05.zip 7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21 p7zip Version 16.02 (locale=fr_FR.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (806EA),ASM,AES-NI) Scanning the drive for archives: 1 f...
- Thu Apr 09, 2020 12:38 pm
- Forum: OpenCV, Python and other image processing
- Topic: [solved] can't boot with non-slp c++ python open-cv image
- Replies: 8
- Views: 8630
can't boot with non-slp c++ python open-cv image
Hum. I have a problem with this image too, but it is a different one. I downloaded it two times, and each time it seems that the zip file is currupted. $ unzip -t cpp-python-2020-02-05.zip Archive: cpp-python-2020-02-05.zip warning [cpp-python-2020-02-05.zip]: 982393912 extra bytes at beginning or w...
- Tue Apr 07, 2020 10:41 am
- Forum: OpenCV, Python and other image processing
- Topic: Faster framerate
- Replies: 9
- Views: 18635
Re: Faster framerate
I am aware that it is inefficient to turn all 5 IO on for the LEDs, I am working on a second version of the LED board in which all LEDs will be toggled on with a single GPIO. Oops, I remembered only of the first part of this sentence and sketched a schematic. Since I drew it, I will share it noneth...