10
votes
Accepted
Arch Linux: problems building opencv with cuda; libopencv_core.so.3.4.0: undefined reference to `cblas_dgemm'
Okay so to close the question:
The Problem was that opencv needs both Lapack with the normal blas and cblas if you are using the ceres-solver. However, the opencv build only links cublas, which ...
- 311
5
votes
Accepted
Making sense of a package with almost no files included
The package is fine, you’re using the wrong dpkg option:
dpkg -L libopencv-contrib-dev
will list all the files in the libopencv-contrib-dev, which is what you’re after (and will show all the files ...
- 481k
3
votes
Is GTK+ lighter than OpenCV for showing pics and videos?
I want to use a library to showing pictures and videos in my C++ program running on an ARM-based board with Ubuntu-server.
Your question is very unclear. What screen will show the picture. What kind ...
- 10.7k
3
votes
Is GTK+ lighter than OpenCV for showing pics and videos?
GTK and Qt are frameworks for creating GUIs. OpenCV, on the other hand, is "an open source computer vision and machine learning software library." (quoted from their About section). So you may want to ...
- 7,803
2
votes
Accepted
pip install opencv-python gives error on Raspbian
Solved it using sudo apt-get install python-opencv
- 31
1
vote
Accepted
pip3 install opencv is looking at the wrong URL
The package is named opencv-python on PyPI, so install it instead of non-existent opencv:
pip3 install opencv-python
- 896
1
vote
pip3 install opencv is looking at the wrong URL
You can download the OpenCV source file and install it using pip. The installation file will have a .whl or Wheel filetype. You can download this one if you're on x86_64
Now go to the download ...
- 813
1
vote
Installing CUDA on my Ubuntu 18.04 system
You can only use a version of CUDA which is compatible with your drivers. You can check the compatibility from CUDA release notes, for driver version 390.116 the highest supported version of CUDA is 9....
- 15.8k
1
vote
Making sense of a package with almost no files included
It was an oversight on my part.
#include <opencv2/opencv.hpp>
#include <opencv2/face.hpp>
The first include is insufficient, the second one is needed as well.
Although this solves the ...
- 3,197
1
vote
Is installation only copying some files in some specific folders?
Installing a package from a distribution is usually nothing more than copying files to specific locations and updating the package manager's database, though some packages may have hooks attached (...
- 8,383
1
vote
Accepted
How to install dependencies for OpenCV?
I was just not able to solve this problem, so I installed Ubuntu 16.04 (http://old-releases.ubuntu.com/releases/16.04.0/ubuntu-16.04-desktop-amd64.iso), and I was able to run sudo apt-get install ...
- 131
1
vote
Accepted
OpenCV based programs optimization embedded linux OS
In order:
How can I optimize my OS so that it can handle intensive calculations applications and how can control the priorities of each part?
For general optimization, there's not much you can do on ...
- 13.5k
1
vote
Accepted
How to make a binary or .deb from application built from source?
If those are libraries you can build with the classical
./configure
make
make install
you can install checkinstall:
apt-get install checkinstall
and simply change the last step to:
./configure
make
...
- 13.7k
Only top scored, non community-wiki answers of a minimum length are eligible