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by namasteybhaisab
Thu Aug 08, 2019 7:31 pm
Forum: General discussion
Topic: Installing opencv on rasberry pi 3 b+ for python
Replies: 10
Views: 7920

Re: Installing opencv on rasberry pi 3 b+ for python

There is too much pain caused by blogs or bad advice encouraging first-time users to compile OpenCV from source. To install it: sudo apt-get install python-opencv Or for Python 3: sudo apt-get install python3-opencv If you need additional advanced packages you could use Anaconda, but it's rare to f...
by namasteybhaisab
Thu Aug 08, 2019 7:18 pm
Forum: Troubleshooting
Topic: No HDMI output on RPi 4 (but it boots)
Replies: 23
Views: 38971

Re: No HDMI output on RPi 4

scotty101 wrote:
Thu Aug 08, 2019 6:27 pm
Seems to be a common and yet not fixed problem.

There is a work around that has had some success. See https://www.raspberrypi.org/forums/view ... 6#p1488488
Didn't help :/
by namasteybhaisab
Thu Aug 08, 2019 7:14 pm
Forum: Troubleshooting
Topic: No HDMI output on RPi 4 (but it boots)
Replies: 23
Views: 38971

Re: No HDMI output on RPi 4

Have same problem when I startup with my Raspberry Pi 4. My problem was that the raspberry Pi was startup with a high screen resolution, and my TV was to old to show this, so I only have black screen on this TV. Then I try to connect to a new type of TV, and now it show a beautiful picture. So chec...
by namasteybhaisab
Thu Aug 08, 2019 5:10 pm
Forum: General discussion
Topic: Installing opencv on rasberry pi 3 b+ for python
Replies: 10
Views: 7920

Re: Installing opencv on rasberry pi 3 b+ for python

Hi LaserJock52,

I also had the same problem of my raspberry pi hanging up.
Booting it to command line and then compiling it helped me.
Even if it still hangs up, use make instead make -j4.

Hope this works out for you.
by namasteybhaisab
Thu Aug 08, 2019 5:05 pm
Forum: Troubleshooting
Topic: No HDMI output on RPi 4 (but it boots)
Replies: 23
Views: 38971

No HDMI output on RPi 4 (but it boots)

Hi, I have Raspberry Pi4 4Gb. I have etched latest raspbian buster. Powering on using this image doesn't show any output on my TV/Monitor. I tried troubleshooting by removing all devices including memory card. The ACT light blinked repeatedly in pattern of fours. Apart from that when I power on the ...
by namasteybhaisab
Mon Jul 29, 2019 12:12 pm
Forum: General discussion
Topic: Installing opencv on rasberry pi 3 b+ for python
Replies: 10
Views: 7920

Re: Installing opencv on rasberry pi 3 b+ for python

You can try and compile opencv from source.

you can follow intsructions from here :
https://www.pyimagesearch.com/2017/09/0 ... pberry-pi/
by namasteybhaisab
Mon Jul 29, 2019 11:50 am
Forum: Camera board
Topic: [RPi 4][C++] RAW image capture using IMX219
Replies: 0
Views: 458

[RPi 4][C++] RAW image capture using IMX219

I am trying to get raw bayer data from CSI camera on raspberry pi using C++. I tried understanding userland codebase along with some other ( raspiraw, raspicam) libraries available. Frankly speaking, I didn't understand any of it and am having a hard time with it. I want to start developing camera p...

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