Search found 10 matches

by fraserbarton
Thu Jul 02, 2020 11:55 am
Forum: StereoPi mechanics
Topic: StereoPi AnyCase Kit
Replies: 6
Views: 4028

Re: StereoPi AnyCase Kit

Hi Fraserbaton, Yep, the plywood drilling without splitting on the opposite side is a tricky thing. You can google for the details. ABS plastic is an expensive thing for DIY details. We are considering to use acrylic plastic (like for the camera mounting plates in our kits), but it also has some sp...
by fraserbarton
Tue Jun 30, 2020 1:54 pm
Forum: StereoPi mechanics
Topic: StereoPi AnyCase Kit
Replies: 6
Views: 4028

Re: StereoPi AnyCase Kit

We're developed a kit for the very quick case prototyping. You can assemble any case in a 10 minutes using just a screwdriver. You can find more details here: https://stereopi.com/anycase We'll upload a drawings to our Wiki in the nearest days. Hi, I have recently purchased an AnyCase kit. My appli...
by fraserbarton
Sun Apr 05, 2020 6:10 pm
Forum: OpenCV, Python and other image processing
Topic: Faster framerate
Replies: 8
Views: 2138

Re: Faster framerate

It's a quick answer without checking anything, but have you considered the capture_continuous function of picamera which seems to be more or less written for the kind of application you have: https://picamera.readthedocs.io/en/release-1.10/api_camera.html#picamera.camera.PiCamera.capture_continuous...
by fraserbarton
Sun Apr 05, 2020 9:32 am
Forum: OpenCV, Python and other image processing
Topic: Faster framerate
Replies: 8
Views: 2138

Re: Faster framerate

Hi Fraserbaton, While taking a still images Pi works in a special mode, and high FPS is a problem here. Another point is that raspividyuv actually can give you a high frame rate over pipe, but Python is unable to process this stream fast enough. Can you please tell me the background of your task? 1...
by fraserbarton
Thu Apr 02, 2020 7:06 pm
Forum: OpenCV, Python and other image processing
Topic: Faster framerate
Replies: 8
Views: 2138

Re: Faster framerate

Hi Michael93, Actually Python frames capture is a bottleneck. You can do some optimizations for this. For example, you can read this brilliant answer from the PiCamera developer here . I mean the second part of his answer concerning np.frombuffer section. You see, we're preparing a new article now,...
by fraserbarton
Wed Apr 01, 2020 12:54 pm
Forum: OpenCV, Python and other image processing
Topic: Capturing monochromatic images
Replies: 1
Views: 687

Capturing monochromatic images

I am looking to capture monochromatic images for my project and am wondering of the best way to achieve this. At the moment I am capturing RGB output from the camera into a numpy array and then getting a grayscale image by performing a dot-product of the RGB matrix with an RGB to grayscale conversio...
by fraserbarton
Mon Mar 30, 2020 3:45 pm
Forum: OpenCV, Python and other image processing
Topic: Broken Stereoscopic Support in Raspbian Stretch
Replies: 4
Views: 1009

Re: Broken Stereoscopic Support in Raspbian Stretch

Apologies I was using the -3d option incorrectly, that makes sense that it would require an option like side by side or top and bottom. Although when I do pass the sbs option the preview window just freezes over the top of raspbian so it is more likely to be this kernel issue. I had tried to use the...
by fraserbarton
Mon Mar 30, 2020 11:41 am
Forum: OpenCV, Python and other image processing
Topic: Broken Stereoscopic Support in Raspbian Stretch
Replies: 4
Views: 1009

Broken Stereoscopic Support in Raspbian Stretch

I am currently experiencing issues with the stereoscopic mode, I am running Raspbian stretch and Python 3.5.3. If I run raspistill -cs 0 or raspistill -cs 1 I get the preview from either camera happily. Running raspistill to bring up the various options I can pass, I can see that -3d is listed. Howe...
by fraserbarton
Wed Oct 09, 2019 11:38 am
Forum: StereoPi hardware
Topic: Powering StereoPi via 40 way GPIO Header
Replies: 5
Views: 1818

Re: Powering StereoPi via 40 way GPIO Header

Hi Fraserbarton, To say briefly, pins 2 and 4 are sitting on the same line as +5V pin on power connector, as shown on this picture: https://wiki.stereopi.com/images/thumb/8/82/Stereopi-usb-power-pinout.png/1200px-Stereopi-usb-power-pinout.png This is correct if power switch is turned On. So you can...
by fraserbarton
Sun Oct 06, 2019 12:12 pm
Forum: StereoPi hardware
Topic: Powering StereoPi via 40 way GPIO Header
Replies: 5
Views: 1818

Powering StereoPi via 40 way GPIO Header

Does anyone know if it is possible to power the StereoPi from the 40 way GPIO header? I want my Pi to be powered from 24V and was intending on putting a 5V switching regulator on an external board to supply the Pi and some other high IO. It would make my design much more refined If I can just take t...