Hi,
I'm a complete newbie to the beagleboard.
I have worked on computer vision and I needed a portable system for
OCR and text-to-speech. The beagleboard seemed to be a pretty good
option. I've read a lot of the wikis and documentation but I have
worked primarily on Windows, so I'm still pretty clueless, though I'm
more than willing to switch to Linux.
My main issue is that I have developed my C++ programs using OpenCV.
How do I get that working on the beagleboard? What about the OpenCV
libraries and the API? Do I need to translate the code or can I keep
using functions like cvCaptureFromCam(0) ?
I'm really confused!! I'd appreciate any help on this topic.
Thanks,
Sam
How do I get that working on the beagleboard? What about the OpenCV
libraries and the API? Do I need to translate the code or can I keep
using functions like cvCaptureFromCam(0) ?
Thanks so much....you have no idea how much that helped me out!!
Just one stupid question -- it's not imperative to install the python
packages right...I mean I have no intention of using any python
scripts, so I can just skip that step right.
Thx for your notes. when i follow your process, i got the error,
cannot find the gcc or arm-angstrom-linux-gnueabi-gcc, What can I do
now? many thanks for your reply.
Thanks so much....you have no idea how much that helped me out!!
I am glad that it was helpful for you.
Just one stupid question -- it's not imperative to install the python
packages right...I mean I have no intention of using any python
scripts, so I can just skip that step right.
I am not sure. My guess is that Python might be necessary for some GUI
staff. I would suggest to try without Python and see if it works as
you need.
Thx for your help, I have installed the arm-angstrom-linux-gnueabi-gcc
by opkg.
after running the compile.sh, i got the error this time:
arm-angstrom-linux-gnueabi-gcc: pkg-config --cflags opencv: No such
file or directory
arm-angstrom-linux-gnueabi-gcc: pkg-config --libs opencv: No such file
or directory
arm-angstrom-linux-gnueabi-gcc: error trying to exec 'cc1': execvp: No
such file or directory
I have already opkg install opencv, but I found that there is no /usr/
local/lib generated. How to fix it? where is the opencv lib placed?
Hello Rickey,
Which file or directory is missing? Have you installed pkg-config?
Did you follow the doc posted earlier to the letter setting up your
environment variables?
I install opencv on BB by "opkg install opencv", but there is no /usr/
local/lib generated, and no /usr/lib/libv4/v4l1compat.so .. i wonder
how to install opencv on BB, and how to set the library.. sigh~~:(
There is a number of packages related to opencv and you don't need
all of them.
Try to install opencv-samples like this:'opkg install opencv-samples'
You can verify installed packages by: 'opkg list_installed | more'
By default your opencv include files are in '/usr/include/opencv'
directory (highgui.h, ...)
and opencv library files are in '\usr\lib\' directory (libcv,
libcvaux2, ...)
The sample applications are located here /usr/share/opencv/samples/c
and you can run them from here as they are precompiled already
If you do 'cd /usr/share/opencv/samples/c'
and execute for example 'image' you will see a famous picture of Lena
I used the " opkg install opencv-samples" command to install opencv sample.
My Devkit8000 displays:
root@beagleboard:/usr/lib# opkg install opencv-samples
Installing opencv-samples (1.0.0+cvs20081115-r2.1) to root...
Downloading http://www.angstrom-distribution.org/feeds/2008/ipk/glibc/armv7a/base/opencv
-samples_1.0.0+cvs20081115-r2.1_armv7a.ipk
Installing libcxcore2 (1.0.0+cvs20081115-r1.1) to root...
Downloading http://www.angstrom-distribution.org/feeds/2008/ipk/glibc/armv7a/base/libcxc
ore2_1.0.0+cvs20081115-r1.1_armv7a.ipk
Collected errors:
* Package libcxcore2 wants to install file /usr/lib/libcxcore.so.2
But that file is already provided by package * opencv
* Package libcxcore2 wants to install file /usr/lib/libcxcore.so.2.0.0
But that file is already provided by package * opencv
It's because I run "opkg install opencv" before, so that the libxccore
cannot be installed again. Rught?
But after this, I can't find and folder mentioned in your email, no
"/usr/share/opencv", no "/usr/include/opencv", how come? so trouble to
develop software in Devkit8000.
opencv is a library (not an application), so will not see a folder
called "opencv"
See my previous email for location of header and lib files and example
precompiled opencv applications
Yes, I installed the python-dev, but still got problem when compiling
the Capture.c:
root@beagleboard:~# gcc 'pkg-config --cflags opencv' -g -o Capture
Capture.c 'pkg-config --libs opencv'
gcc: pkg-config --cflags opencv: No such file or directory
gcc: pkg-config --libs opencv: No such file or directory
