StereoPi Forum

PS I thought at first that a consistent registration across all areas of the two images was not going to be possible when I saw the initial images, until I realised that the mismatch could be corrected almost completely by an affine transform, which I believe must be correcting a slight tilt in the ...

Just FYI, UV pass filters (which allow UV through but block visible light) can be found by searching for any/all of ZWB1 ZWB2 ZWB3 UG1 UG11 UG5.
- some months back you could get a pack of 5 for about $5 ( https://www.aliexpress.us/item/3256803885895014.html ) although looking at them recently the ...

If there's anyone else interested in doing this, I do now have a 3D-printed holder for a beam-splitter prism that does the same job as a semi-silvered mirror would have done. Work-in-progress files and some initial notes (in a Readme file, including where to get a compatible prism for that holder ...

Thanks! Downloading now.

The pi5 hardware could in principle trigger both cameras close enough to simultaneously for this work, *but* the libcamera software stack does not support it. Maybe if enough people register an interest in the feature it may be added some day, either by the RPi people or the libcamera people. Maybe ...

There's an interesting blog post here about UV photography at https://stereopi.com/blog/deep-ultraviolet-imaging-using-raspberry-pi-hq-camera but there's no comment facility on the blog so I'll follow up here instead.

A team from the UK did something similar back in 2016 using the regular pi ...

I'm slowly reacquainting myself with the system again having used it last around 2019.

In more recent years the Pi folks have completely replaced the camera support with the libcamera stack, so before I possibly head down the wrong path (the info on stereopi.com that I've found so far still seems ...

Hi - I have the original board from many years ago and I enjoyed using it at the time for stereo photography. Recently (now I'm retired and have more time available) I finally got around to trying a project I always wanted to experiment with which is using the NOIR camera and an external IR notch ...

Hi Graham,
I'm still in paradox mode. :shock: I suggest that actual left camera image has specific features, as it "sees" more features at the left part of an object. The same with the right, as it is projection to the plane from other point of view. So it is a quest for me to understand, how your ...

I'm having real problems getting the stereopi to make and maintain a wifi connection. (I don't know if this is a factor, but my wifi system is a pi3 running a wireless bridge - this has the advantage that I can tcpdump all the traffic to any device, which isn't possible with an off-the-shelf NAT ...

Yes, I can confirm that the first big image does indeed have depth inversion for me, and on the triple image, I see it correctly only when using the two on the right. I presume you see it properly using the two on the left. That style works for 'wall-eyed' free viewing or when using a Holmes-like ...

I've noticed that the stereo images that are posted here are usually in "wall-eyed" or "side-by-side" format.

At lot of us - possibly the majority from surveys I've seen - find it very hard to freeview in side-by-side format, and much easier to view in 'cross-eyed' format. Consequently when I view ...

While waiting for the mail-order CM3lite to arrive, I decided to have a go at writing the 4Gb image to the eMMC in the CM3 (non-lite).

(The module has printed on the back "Raspberry Pi Compute Module 3" "2015 Version 1.0")

I unplugged the power supply, the keyboard/monitor, the cameras - just ...

Appreciate that you built an image for me (and other 4Gb CM users)! I'll try it today.

Спаси́бо большо́е!

Graham

Hi Gtoal,
1. As for OpenCV image download - I can try to put it on Torrent, so you can download it. File size is about 2.7 Gb, and 8Gb micro SD is needed to write it. If you can suggest other options - please let me know, and I will try to use another approach to share this image file. For example ...

After some more messing around, some of which may not have been needed in hindsight (i.e.:
sudo apt-get install lightdm
sudo apt install raspberrypi-ui-mods
sudo pip3 install opencv-python
sudo apt-get install libatlas-base-dev libjasper-dev libqtgui4 libqt4-test
sudo apt install libqt4-test ...

New stereopi user here - just started today so this is likely a newbie problem...

Hooked up StereoPi with 4Gb CM module. Using the pre-installed Rasbian that came with CM module, not the SLP image.
(still downloading, I have a pretty slow internet connection)

Updated, upgraded, and rpi-upgraded ...