Does a long time to load considered as a bug?
On my current connection (24Mbps down / 30ms ping to stereopi.com), it takes 39s on mobile phone before being able to start to read (4-5 seconds on PC). I have not read the article yet.
Search found 189 matches
- Wed Feb 05, 2020 7:55 pm
- Forum: Other topics
- Topic: New article published
- Replies: 6
- Views: 19018
- Fri Jan 17, 2020 8:58 am
- Forum: StereoPi hardware
- Topic: StereoPi to Oculus Go direct WiFi connection
- Replies: 10
- Views: 5132
Re: StereoPi to Oculus Go direct WiFi connection
I did not dig into the way proposed by Realizator, but with a quick review of the posted code, I see that you test a probably unset variable AP_IFACE, thus the function AP_run is probably not called.
- Fri Jan 17, 2020 8:41 am
- Forum: Other software
- Topic: command line
- Replies: 2
- Views: 3000
Re: command line
If you use SLP variant of the operating system (which is the default delivered with the kit), remote console access is enabled by default through SSH protocole. See https://wiki.stereopi.com/index.php?title=SLP_(StereoPi_Livestream_Playground)_Raspbian_Image#Advanced_users.E2.80.99_section for crede...
- Fri Jan 10, 2020 8:24 am
- Forum: StereoPi hardware
- Topic: StereoPi to Oculus Go direct WiFi connection
- Replies: 10
- Views: 5132
Re: StereoPi to Oculus Go direct WiFi connection
(quick answer) 1. On my Android phone, it is in Parameters>wireless& network>plus...>sharing connection>wifi hotspot (rough translation, my phone is not in English) Do not know if such feature is available on your device since there is possibly no other network to share on the hotspot. 2. I read the...
- Fri Jan 10, 2020 8:09 am
- Forum: OpenCV, Python and other image processing
- Topic: The depth map colors are constantly changing
- Replies: 6
- Views: 3053
Re: The depth map colors are constantly changing
As the software tries to reconstruct map from two changing images (images in videos often fluctuate, especially with fluorescent lighting) the result can fluctuate too, I guess. What is the order of magnitude of the depth estimation variance? I didn't undersand what you said. I can try to reformula...
- Thu Jan 09, 2020 8:38 am
- Forum: OpenCV, Python and other image processing
- Topic: The depth map colors are constantly changing
- Replies: 6
- Views: 3053
Re: The depth map colors are constantly changing
With the in-depth answer from Realizator, my question has less interest. Normalization part is what I supposed behind my question which is confirmed in the answer.
Nonetheless, it might be interesting for you to check actual values.
Nonetheless, it might be interesting for you to check actual values.
- Thu Jan 09, 2020 8:26 am
- Forum: StereoPi hardware
- Topic: StereoPi and Arduino I2C
- Replies: 3
- Views: 2300
Re: StereoPi and Arduino I2C
You solved it while I wrote an answer. I post it nonetheless because some people reading your topic in the future might find it useful. That said, I am a bit confused. If you used the USB-serial interface (as I supposed in my answer) the 5V power should already be provided. If you use actual hardwar...
- Wed Jan 08, 2020 5:17 pm
- Forum: OpenCV, Python and other image processing
- Topic: The depth map colors are constantly changing
- Replies: 6
- Views: 3053
Re: The depth map colors are constantly changing
As the software tries to reconstruct map from two changing images (images in videos often fluctuate, especially with fluorescent lighting) the result can fluctuate too, I guess.
What is the order of magnitude of the depth estimation variance?
What is the order of magnitude of the depth estimation variance?
- Sun Jan 05, 2020 5:30 am
- Forum: The art of stereoscopic photo
- Topic: 3D macro photo. The 3rd article is here
- Replies: 4
- Views: 3843
Re: 3D macro photo. The 3rd article is here
Well, biased by my vision, I imagined something different. In particular, I have interpreted the term camera as a regular photo camera with minimum control on exposure time and iso, but forgot that for non-photographers it means snapshot taker.
- Thu Jan 02, 2020 10:34 am
- Forum: Video, photo (livestream, recording, photo capturing)
- Topic: Problems using the Android app with Android hotspot and an edimax wifi dongle
- Replies: 17
- Views: 5199
Re: Problems using the Android app with Android hotspot and an edimax wifi dongle
If you power only the stereopi, its cameras and wifi dongle from your 15W source, the power should be enough. I personally use a simple 10W power bank with similar setup without problem. I didn't catch why you talked about USB (a distinct problem?), but I should remind you something about it. On the...
- Wed Jan 01, 2020 6:49 am
- Forum: OpenCV, Python and other image processing
- Topic: Camera calibration
- Replies: 3
- Views: 2408
Re: Camera calibration
The script is totally related to cameras (it computes focal length, centering of the sensor on the optical axis, lens distortion and so on), so it does not matter if you change the operating system. Also SLP is based on raspbian. The parameters (matrices) are stored in binary with/by a library calle...
- Wed Jan 01, 2020 6:29 am
- Forum: Video, photo (livestream, recording, photo capturing)
- Topic: Problems using the Android app with Android hotspot and an edimax wifi dongle
- Replies: 17
- Views: 5199
Re: Problems using the Android app with Android hotspot and an edimax wifi dongle
It sounds like power issue again.
Can you describe your full setup: which board powered by which method (connector) with which source (battery/adaptor) and whenever possible at which power rating?
Can you describe your full setup: which board powered by which method (connector) with which source (battery/adaptor) and whenever possible at which power rating?
- Thu Dec 26, 2019 9:26 pm
- Forum: The art of stereoscopic photo
- Topic: 3D macro photo. The 3rd article is here
- Replies: 4
- Views: 3843
Re: 3D macro photo. The 3rd article is here
Nice introduction. The stereo window, briefly exposed in the video, is a bit more detailed here on this forum . The distance to the front-most element is briefly evoked in this post, but better developed in the article (following the 1/30 rule is an easy way to fulfill the "There shall not be too mu...
- Thu Dec 26, 2019 7:13 pm
- Forum: Your Project
- Topic: simple stereo 3d video
- Replies: 4
- Views: 2672
Re: simple stereo 3d video
Nice. Interestingly, the artifacts created by the combination of roller-shutter and drone vibrations are in very good sync, but the physical alignment of the cameras is far from perfect. I opened the video in a sView (the 3D video player part) which has the advantage of being able to adjust the vert...
- Thu Dec 26, 2019 3:57 pm
- Forum: Cameras and video capture modules
- Topic: mmal: No data received from sensor
- Replies: 3
- Views: 3994
Re: mmal: No data received from sensor
Sorry for the delay, I was quite unavailable those days. I investigated further and it seems that it comes from the camera chip itself. The last test I did is pretty clear: on a working setup, when I exchange only the camera chip (black square with short ribbon), I got the reported message, and it w...
- Wed Dec 11, 2019 6:19 pm
- Forum: Cameras and video capture modules
- Topic: mmal: No data received from sensor
- Replies: 3
- Views: 3994
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...
- Thu Dec 05, 2019 9:51 am
- Forum: Your Project
- Topic: I’ve built a telepresence robot using Stereo Pi
- Replies: 4
- Views: 2660
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...
- 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: 3133
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 ...
- Wed Dec 04, 2019 6:17 pm
- Forum: Video, photo (livestream, recording, photo capturing)
- Topic: Colour Filtering Live Stream
- Replies: 6
- Views: 7099
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...
- Mon Oct 28, 2019 3:23 pm
- Forum: Other hardware
- Topic: Supported WiFi modules
- Replies: 8
- Views: 11848
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...