Raspberry Pi + OpenCV

With the Debian Wheezy beta in getting E: Unable to locate package libpngwriter0-dev. , libpngwriter0c2,libavcodec52 and libavformat52. Ive done an apt-get update. New to linux. much appreciated.

Hi, should the python packages be updated to 2.7? Or should they still stay libpython2.6 etc.

I’ve got the 2012-07 Wheezy installed which comes with Python 2.7.3rc2

Could Raspbian “wheezy” at the OS work as well?

Hi..

I tried doing all the steps mentioned.. I was able to build OpenCV. I did this using ssh. But when I connected Monitor to RPi, it failed to show desktop after startx command. What could be the problem?

Also while configuring OpenCV , it gives me error called as Cmakelists.txt file does not appear at the path…

Hi,

Please i am working on a project where i need to setup an enviroment for programming using OpenCV and C++ instead of OpenCV and Python, i didnt find any Blogs or Tutorials to follow i dont know why, most of the people use OpenCV and Python on linux, i am using the Debain Weezy OS for the Raspberry PI, do you have any idea of which IDE i should setup ? is it CodeBlocks ? i tried setting up Eclipse for C/C++ but it didnt work on the raspberry PI. please guide me if you know any solutions for these problems.

Thank you

I got this working on Debian 6, Linux Rasberrypi 3.2.27+ but had skip/uncheck in the cmake-gui the CUDA parts, FFMPEG and XIMEA. I did make sure to include the V4L because I read somewhere that this is necessary for webcams to work with OpenCV. The SD card came with the rasberry pi and was packaged by element 14. The card size is 4GB, I have 1.0GB free after this install but I also installed numpy scipy matplotlib and other libraries. This is a B version of the pi

Install date: Dec 5, 2012.

good tutorial, I’ll try to follow to install openCV into a cubieboard.

I try to install following this instructions but it has some error in a step of build (make). The error occur when build in “modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.o”. I check a installation of ffmpeg which is already updated. Could anyone have any suggestion, please help me.

Thanks.

Hi! After following the steps above, I tried to execute one of the python examples by going to

~/OpenCV-2.3.1/samples/python

some of the examples in the folder are drawing.py and squares.py

I tried to execute a sample by typing python ./drawing.py and i get an error
Traceback (most recent call last):
File “./drawing.py”, line 7, in
import cv2.cv as cv
ImportError: No module named cv2.cv

Please help me figure out this error. thanks in advance!

I get Make error
Any ideas what the cause could be?
I have fresh install of raspbian
from 2 days ago.
….
Scanning dependencies of target opencv_test_core
[ 33%] Building CXX object modules/core/CMakeFiles/opencv_test_core.dir/test/test_rand.o
[ 34%] Building CXX object modules/core/CMakeFiles/opencv_test_core.dir/test/test_math.o
/home/pi/OpenCV-2.3.1/modules/core/test/test_math.cpp: In member function ‘virtual void Core_SVDTest::prepare_to_validation(int)’:
/home/pi/OpenCV-2.3.1/modules/core/test/test_math.cpp:1938:12: warning: variable ‘step’ set but not used [-Wunused-but-set-variable]
[ 34%] Building CXX object modules/core/CMakeFiles/opencv_test_core.dir/test/test_precomp.o
[ 34%] Building CXX object modules/core/CMakeFiles/opencv_test_core.dir/test/test_operations.o
c++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See for instructions.
make[2]: *** [modules/core/CMakeFiles/opencv_test_core.dir/test/test_operations.o] Error 4
make[1]: *** [modules/core/CMakeFiles/opencv_test_core.dir/all] Error 2
make: *** [all] Error 2
pi@raspberrypi ~/OpenCV-2.3.1/build $

Just FYI, these instructions worked up until running the demo. At that point the libraries couldn’t be found, so I had to add “export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib” to /etc/bash.bashrc.

Hello, I’m going to compile the opencv-2.4.8 and the good cmake options looks to be:

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_NEW_PYTHON_SUPPORT=ON -D BUILD_EXAMPLES=ON ..

BUILD_NEW_PYTHON_SUPPORT=ON instead of BUILD_PYTHON_SUPPORT=ON

I just got my install working after 3 frustrating days. Go to this link and follow the instructions for a fresh install of the current version of opencv. http://robertcastle.com/2014/02/install … pberry-pi/
After that do these steps as well so you can fully configure opencv and make certain that it works:
CONFIGURE OPENCV
In your terminal, execute:

sudo nano /etc/ld.so.conf.d/opencv.conf

Add the following line and save it:

/usr/local/lib

Now, in your terminal, execute:

sudo ldconfig

Again, execute:

sudo nano /etc/bash.bashrc

Add the following two lines at the end of the file and save it:

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

Finally, reboot your computer.

TRY AN EXAMPLE

To test an example, from your terminal cd to the OpenCV folder. Once you’re inside it cd to samples/c.

Now, execute:

chmod +x build_all.sh

./build_all.sh

./facedetect lena.jpg

ok opencv works you’re ready for simplecv ( although if you can’t get simplecv there are some good youtube vids and books for opencv )

I did this: $ sudo apt-get install ipython python-opencv python-scipy python-numpy python-setuptools python-pip python-pygame

sudo apt-get install git
git clone git://github.com/sightmachine/SimpleCV.git
cd SimpleCV
sudo pip install -r requirements.txt
python setup.py install
sudo python setup.py develop

after that go here:

http://www.linux-projects.org/modules/s … e&artid=14
then finish up by going here:
http://www.raspberrypi.org/forums/viewtopic.php?f=91&t=57788&p=0&e=0&sid=48693b72792897475ee17b347a3b3c7e

to check the configuration and test steps for simplecv

i got this error..pls help me to rectify it
Makefile:116: recipe for target ‘all’ failed
make: *** [all] Error 2