Go to advanced search

by MacAttack
Sat Feb 15, 2020 12:09 am
Forum: General discussion
Topic: How to install OpenCV on Raspberry Pi?
Replies: 6
Views: 773

Re: How to install OpenCV on Raspberry Pi?

Have you tried renaming "cv2.cpython-37m-arm-linux-gnueabihf.so" to "cv2.so"? I'm sure that's what I did. Thanks but that didn't work either. I got the same old error message. The author of the original article I linked to seemed to poo-poo the usage of NOOBS to install the OS and the latest versio...
by MacAttack
Thu Feb 13, 2020 4:53 am
Forum: General discussion
Topic: How to install OpenCV on Raspberry Pi?
Replies: 6
Views: 773

Re: How to install OpenCV on Raspberry Pi?

Still need help. It seems that the above (my post) did not install openCV as I'm still getting the above error; [email protected]:~ $ workon cv (cv) [email protected]:~ $ python Python 3.7.3 (default, Apr 3 2019, 05:39:12) [GCC 8.2.0] on linux Type "help", "copyright", "credits" or "license" for more info...
by MacAttack
Tue Jan 28, 2020 2:54 am
Forum: General discussion
Topic: How to install OpenCV on Raspberry Pi?
Replies: 6
Views: 773

Re: How to install OpenCV on Raspberry Pi?

I am also trying to install OpenCV on a PI3B+ and had some issues. I followed the process that is detailed below. https://www.pyimagesearch.com/2018/09/19/pip-install-opencv/ Aside from some small changes needed, no doubt due to time/software changes, it seems to work until I get to the part where t...
by MacAttack
Tue Dec 31, 2019 10:30 pm
Forum: Camera board
Topic: Variation of framerate
Replies: 5
Views: 386

Re: Variation of framerate

H264 also has a variable compression factor. I would not be surprised if a higher frame rate also results in more compression, at least with a Picamera, to keep the data rate to a reasonable level.
by MacAttack
Sun Dec 29, 2019 1:49 am
Forum: Camera board
Topic: Billiards/Pool shot recorder
Replies: 5
Views: 489

Re: Billiards/Pool shot recorder

Here's a question I can't seem to find an answer to, either at the blog at pyimagesearch or picamera.readthedocs or anywhere. From the camera documentation I gather that, once initialized, the camera hardware runs at it's given frame rate, communication to the GPU which is doing various background t...
by MacAttack
Fri Dec 27, 2019 7:17 pm
Forum: Camera board
Topic: Billiards/Pool shot recorder
Replies: 5
Views: 489

Re: Billiards/Pool shot recorder

I think a very important task for your recording would also be to make ball spin visible. In the repo I pointed to section "camera software panning" is on spin analysis of fast flying airsoft pistol pellet. I had to mark the pellet in order to make the spin visible: I'd agree ! I'm just not sure ho...
by MacAttack
Thu Dec 26, 2019 11:37 pm
Forum: Camera board
Topic: Billiards/Pool shot recorder
Replies: 5
Views: 489

Re: Billiards/Pool shot recorder

You can store arbitrary long encoded video on SD card. I doubt that you can do the analysis task while recording. So use raspivid with full video storing, and cut out the scenes you want in post processing. Thanks for the reply. Perhaps I should add some background info. I first thought that I want...
by MacAttack
Thu Dec 26, 2019 12:26 am
Forum: Camera board
Topic: Billiards/Pool shot recorder
Replies: 5
Views: 489

Billiards/Pool shot recorder

I'm pondering a pool project, the kind that has balls, dry. Before I set to tossing code (Python, OpenCV) into editors, I'd like to ask if I'm on the right track in general, as well as ask a few specific camera related questions. I hope I've put this in the proper forum, if not hopefully the mods wi...

Go to advanced search