I wonder there is any openCV function to display its library build option like if it is supporting TBB or IPP. Because I have a custom built openCV 3.0 library but the readme file doesn't mention whether TBB or IPP was implemented on it.
Thanks,
It's not a function, but the cvconfig.h header file contains the build information as defined (or not) macros.
Related
GraalVM native-image allow us to convert Java libraries into local executable. It also allow to compile to shared library as mentioned https://www.graalvm.org/docs/Native-Image/user/README
An native image can be built as a standalone executable, which is the
default, or as a shared library by passing --shared to native-image.
For an image to be useful, it needs to have at least one entry point
method.
The closest thread I found is this one https://github.com/oracle/graal/issues/373, but still can't find any guide to do so for iOS, is that possible? Any guide I can follow?
I am trying to use codeblocks to compile the code available here
The thing is every time I try to build and run, I run into the following error:
|/.../head_pose_estimation/opencv2/core/core.hpp|48|fatal error: opencv2/core.hpp: No such file or directory
Does anyone know how I can fix this? Thank you!
You do not have the pre-built (compiled) version of OpenCV, what you currently have are the source files. If you want to do something special with OpenCV (Target/GPU SUpport etc) then you will need to build the framework using an appropriate guide.
If however you simply want to use OpenCV in the most common way then download the pre-built libraries from the OpenCV.org website.
NOTE:
If you are using OpenCV with MinGW compiler, I do not remember if the pre-built is actually pre-built for MinGW. (I dont think they do) In this case you will HAVE to built the libraries. You can find a guide here
I would like to use OpenCV with CodeBlocks. But I don't know to configure CodeBlocks about "Project build options". I need to precise where are the headers, and functions of openCV.
Firstly I've tried to follow this tutorial : http://kevinhughes.ca/tutorials/opencv-install-on-windows-with-codeblocks-and-mingw/ But I had some problems in the step 4 with the configuration of makefiles. In fact, I am not very sure that I need to use cmake in order to read opencv functions.
Could you help me to configure build options ? I think I need to add "C:\opencv\build\include" about compiler on Search Directories, and about linker, what should I add ?
How add the librairy on CodeBlocks ?
Thank you
In fact CMakeLists.txt is present here : ..\opencv\sources\CMakeLists.txt
I thought CMake would have searched. Then, I use correctly Cmake and he has builded OpenCV. I don't use cygwin, I use the shell of windows. So, after that, I've tried to build the exemple of opencv code in this tutorial, and it works !
Now, when I try to build a project already coded, I don't succeed. In fact, it's a code made by an other person, it use OpenCV and C++. And there is also Java code for Android. But I would like to build and execute only C++ code.
I chose the same settings for OpenCV, but how could I know what I should add in "compiler" and "linker" section ?
Thank you for your help.
Try to change your source directory to C:\opencv\sources and see if that works.
Hello everyone;
i had opencv 2.2 on my vs2010, and i wanted to update so i went to opencv site and:
i've downloaded OpenCV for Windows (ver 2.4.6)
i've extracted it to c:\opencv2.4
i've set the Environment Variable as doc said here: http://docs.opencv.org/doc/tutorials/introduction/windows_install/windows_install.html#windowssetpathandenviromentvariable
( i didnt know what is "PATH EDITOR" so i've just changed Environment variables)
i made property sprite sheets as opencv doc said here: http://docs.opencv.org/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html#windows-visual-studio-how-to
5.but Doc Was Old, and there was no "include" folder in OpenCV2.4/opencv/build/x64/vc10 so I did set include Directory to OpenCV2.4/opencv/build/include in My property sprite sheet.
everything seems true and VS detect include libraries But
VS2010 throw following error when i want to Build the solution:
1>LINK : fatal error LNK1104: cannot open file 'opencv_core231d.lib'
Strange thing is there is no "opencv_core231d.lib" File in c:\opencv2.4 at all!!!
:(
what is the problem?
This is a Linker error, so make sure you are trying to link the correct libraries.
I would suggest to use CMake, which definitely simplifies configuring projects, specially those having dependencies like OpenCV (you can take a look to the OpenCV documentation, or any blog explaining the steps: http://marcosnietoblog.wordpress.com/2011/11/19/opencv-for-windows-easy-installation-using-cmake/ )
By the way, I use to have several versions of opencv on the same folder:
C:\OpenCV\opencv2.4.3
C:\OpenCV\opencv2.4.6
...
So I can easily switch within CMake setting the OpenCV_DIR.
opencv_core231d.lib is a debug version, all the *d.lib and *d.dll files in openCV are with debug symbols.
It is likely that the pre-built release you downloaded doesn't contain debug ones.
either download te source and build both debug and release. Or, if you don't care how opencv works internally, just change the linker flags to use the same lib names with the d
edit. or of course if you donwloaded opencv 2.4.6 the file would be opencv_core246d.lib
I am interested in using a library that supports lip reading to augment audio/voice recognition. I found out that Intel's AVCSR (which was bundled with OpenCV library) would be an interesting option to consider. Would there be any other libraries that can be used to achieve the same (lip reading to augment voice recognition)?
Also I have not been able to locate a source to download this library from. I already tried the OpenCV package from SourceForge (http://sourceforge.net/projects/opencvlibrary/) but it does not seem to have the AVCSR packages/files. Could someone who has already worked with something similar point me to the place where I can find these source files (either within OpenCV or elsewhere)?
Thank you.