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Re: Using OpenCV in Octave for Windows


From: Tatsuro MATSUOKA
Subject: Re: Using OpenCV in Octave for Windows
Date: Tue, 1 Jun 2010 19:07:02 +0900 (JST)

Hello

I have a quick look at http://sourceforge.net/projects/opencvlibrary/files/.

Did you install this ?

OpenCV-2.1.0-win32-vs2008.exe

The above the pre-built OpenCV binaries are built by the MSVC and the libraries 
binded to the binaries
may not be used from the octave/mingw32. 
If so, you should build the OpenCV from source using the MinGW GCC-4.4.0 
(Because the current
octave/mingw32 built by GCC-4.4.0.

See
http://opencv.willowgarage.com/wiki/MinGW

Regards

Tatsuro



--- Benjamin Lindner wrote:

> > Hello,
> > 
> > I would like to use the OpenCV library from Octave on a Windows platform.
> > Apparently, bindings do exist but are not maintained well. I have installed
> > Octave 3.2.4 as part of the cygwin package and I have installed the OpenCV
> > 2.1 library. However, this does not seem to suffice.
> 
> Merely installing a library does not make it available to octave.
> You will need to write functions that actually call code from this library.
> This is what many octave-forge packages do (e.g. the GSL package which 
> provides an octave
> interface to routines in the gsl library)
> 
> So if there is an octave package that acts as OpenCV bindings, you'll 
> additionally need to
> install this package (in addition to the OpenCV library itself).
> 
> Installing such a package could be done using 
>   pkg install path-and-name-to-package
> or (probably) require manual compilation. For further advise here we'll need 
> to have more
> information on OpenCV and how you propose to use it.
> 
> > Is it necessary to compile either Octave or OpenCV (or both) from the
> > sources to get it to work? 
> 
> No and No. You'll need the development part (i.e. headers and import 
> libraries) for both octave
> and opencv. And the same goes for all libraries OpenCV depends upon.
> 
> > Is there an installer that will do the necessary
> > magic? 
> 
> The mingw32 octave installer provides the octave development tools.
> For the cygwin version I guess that you'll need to also instell the -dev 
> package.
> 
> > Are there certain files that I have to place in certain directories?
> > Which environment variables do I have to set?
> 
> Maybe :)
> Depends heavily on the actual case-under-test
>  
> > I would appreciate any help you can offer. I already searched the archives
> > for this list as well as the OpenCV forum but without luck so far.
> 
> Can you provide more details? Where did you get OpenCV from?
> What did you already try?
> 
> benjamin
> -- 
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