Search found 94 matches

by stereomaton
Wed Dec 11, 2019 6:19 pm
Forum: Cameras and video capture modules
Topic: mmal: No data received from sensor
Replies: 1
Views: 7

mmal: No data received from sensor

One of the v2 camera of the kit I recently got has a strange behavior. It is detected # vcgencmd get_camera supported=2 detected=2 but it seems to stall the raspistill/vid programs. When used alone, I get this message # raspistill -o /media/DCIM/test.jpg -t 1 Camera control callback cmd=0x4f525245mm...
by stereomaton
Thu Dec 05, 2019 9:51 am
Forum: Your Project
Topic: I’ve built a telepresence robot using Stereo Pi
Replies: 4
Views: 89

Re: I’ve built a telepresence robot using Stereo Pi

Awesome project, indeed. As realizator highlighted, it can do far more than what a telepresence robot usually can. You probably should improve your communion on this, especially if you plan to have a business with it. Although I know it is a prototype, I would suggest you to handle the cable passing...
by stereomaton
Thu Dec 05, 2019 9:19 am
Forum: OpenCV, Python and other image processing
Topic: Getting Actual Distance Data (in cm) from Depth Map
Replies: 4
Views: 46

Re: Getting Actual Distance Data (in cm) from Depth Map

I never did that, but if I remember my readings well, Z=F.B/D (depth = focal × base ÷ disparity) when infinity is at 0 disparity. You can calibrate your cameras to get the focal length and the stereo base in the right units. Alternatively, you can consider that F.B is constant (the distance between ...
by stereomaton
Wed Dec 04, 2019 6:17 pm
Forum: Video, photo (livestream, recording, photo capturing)
Topic: Colour Filtering Live Stream
Replies: 5
Views: 154

Re: Colour Filtering Live Stream

I did not try it yet (planned though), but maybe you can also use PiCamera python module to get RGB version of the frames and do the image processing you need in GPU with OpenCV for example. Displaying the result on HDMI should not be very hard and it would give you more flexibility in the process t...
by stereomaton
Mon Oct 28, 2019 3:23 pm
Forum: Other hardware
Topic: Supported WiFi modules
Replies: 6
Views: 855

Re: Supported WiFi modules

Stereomaton, could you also please give me the model, manufacturer, and (if possible) link to manufacturer? This will simplify dongles search for purchase. Sorry, it is a dongle from the drawer. The only thing I can add is that it is written POSS PSNKWIFI150 on the device. Inside, it is a Realtek R...
by stereomaton
Fri Oct 25, 2019 5:14 pm
Forum: Your Project
Topic: StereoPi Field Report contest - afterthought
Replies: 0
Views: 96

StereoPi Field Report contest - afterthought

The September Grand Prix is finished and the laureates are known. Congratulations to all who participated, it was a pleasure to read about the projects of other people, but there were very few of them submitted. Except if some projects are still in the pipe, I counted 3 submissions published whose a...
by stereomaton
Fri Oct 25, 2019 3:52 pm
Forum: Other hardware
Topic: Supported WiFi modules
Replies: 6
Views: 855

Re: Supported WiFi modules

any idea? I wanted to read the script to help you, but the "Your Pi revision number is" message is not present in the current version of the script. Maybe the way to detect CPU architecture changed and you can retry it. You should probably open a new thread when you have new subject to discuss like...
by stereomaton
Fri Oct 25, 2019 3:44 pm
Forum: Other hardware
Topic: Supported WiFi modules
Replies: 6
Views: 855

Re: Supported WiFi modules

Realizator wrote:
Tue Oct 22, 2019 9:33 am
I decided to open this thread to list all supported modules tested, and also drivers installation procedure for unsupported modules.
"Bus 001 Device 033: ID 0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter"
Works out of the box.
by stereomaton
Fri Oct 25, 2019 3:35 pm
Forum: Other topics
Topic: Forum search settings have been updated
Replies: 1
Views: 104

Re: Forum search settings have been updated

Cool. 100% of my searches were filtered out before.
I have nothing to search right now, but it is a good thing.
by stereomaton
Mon Oct 21, 2019 6:14 am
Forum: Your Project
Topic: DIY VR headset for the StereoPi. 10 ms latency for just $135
Replies: 1
Views: 96

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

Filming a timer and a screen which displays it through the camera... It reminds me a similar latency test I did on an endoscope several years ago. However, I am surprised by the measure you give. Standard 60fps is about 16ms, thus anything under 32ms (Shannon frequency) or even 0.1s (realistic error...
by stereomaton
Wed Oct 16, 2019 7:49 pm
Forum: Your Project
Topic: Itinerant self-service stereoscopic photo automaton… the Stereomaton
Replies: 7
Views: 313

Re: Itinerant self-service stereoscopic photo automaton… the Stereomaton

For completeness, I should add the link to the third part of the series which talks about the usage during the event:
https://www.crowdsupply.com/virt2real/s ... -goes-live
by stereomaton
Sat Oct 12, 2019 7:36 am
Forum: Your Project
Topic: 180×180 Apple tree fisheye test
Replies: 0
Views: 101

180×180 Apple tree fisheye test

This photo was made by using a pair of wide-angle (187° circular fisheye) SOHO cameras mounted on the stereomaton (in automated mode). Although any additional filters were applied, the exposure is not good and the color balance is worst (bigger artifacts manually corrected afterwards). I think there...
by stereomaton
Wed Oct 09, 2019 10:29 pm
Forum: OpenCV, Python and other image processing
Topic: Upgrading/New Drivers
Replies: 4
Views: 138

Re: Upgrading/New Drivers

there is a difference between make and sudo make . The difference is that executing through the sudo command, the make program get root privileges. You can remember it as sudo=" s uper u ser do ". It is always better to reserve execution with high privileges to the tasks that really need it, such a...
by stereomaton
Sat Oct 05, 2019 8:23 am
Forum: StereoPi hardware
Topic: Ethernet failure?
Replies: 9
Views: 263

Re: Ethernet failure?

Thanks. As I work mostly with headless systems, I did not think at all about this way that might be obvious for others. It sounds strange that the hardware used to work and broke. Maybe a weak soldering on the connector that was damaged with manipulation (connectors and their connections are often w...
by stereomaton
Fri Oct 04, 2019 11:53 pm
Forum: StereoPi hardware
Topic: Ethernet failure?
Replies: 9
Views: 263

Re: Ethernet failure?

I don't get how you can have a terminal to type the command if the board has no network access. Anyway, even if I am very surprised and puzzled, glad you solved your problem.
As a simple user, I cannot answer the warranty part.
by stereomaton
Fri Oct 04, 2019 6:35 pm
Forum: StereoPi hardware
Topic: camera calibration for stereo photo
Replies: 1
Views: 102

Re: camera calibration for stereo photo

Doing it automatically is not very simple, and you have to have a valid calibration of your system beforehand. If you want to do it yourself, you can get inspiration from the code of the stereomaton: https://github.com/haum/stereomaton/blob/master/code/stereomaton.py Lines 209 to 222 do the alignmen...
by stereomaton
Wed Oct 02, 2019 7:26 pm
Forum: StereoPi hardware
Topic: Ethernet failure?
Replies: 9
Views: 263

Re: Ethernet failure?

Woo. Strange story. How do you determine the IP it get? Could you draw a sketch of your network installation? If you had to change your hardware several times, there might be something you do not understand or something in your installation that interfer. With such problems, I would start to try to ...
by stereomaton
Wed Oct 02, 2019 6:49 pm
Forum: StereoPi hardware
Topic: StereoPi schematics
Replies: 4
Views: 338

Re: StereoPi schematics

The schematics are already published in PDF. Also, the kicad suite is a free software (both like in liberty and in price) so you can easily install it to inspect the design (which would not be possible with Altium). These are two possible ways to have access to the schematics before realizator answe...
by stereomaton
Sat Sep 28, 2019 5:04 am
Forum: StereoPi hardware
Topic: GPIO issue
Replies: 5
Views: 222

Re: GPIO issue

I did not know this extension before, but it likely not use bare GPIO, but rather the peripherals such as I2C bus which are also available on the GPIO extension connector. There might be peripherals and drivers to enable, which is generally done through the device-tree or device-tree overlay mechani...
by stereomaton
Sat Sep 28, 2019 4:46 am
Forum: StereoPi hardware
Topic: 3,5 sreeen
Replies: 7
Views: 238

Re: 3,5 sreeen

The installer script possibly try to install the software without updating the list of available packages in the repository, thus maybe it tries to download something that was updated between the last update and now. Try to run "apt update" to update list list of packages before running your install...