I try to build openCV with Extramodules. If I try to configure the projectfiles (vc14 x32 on windows 10) with cmake there's the error:
CMake Error at opencv_contrib-master/modules/xfeatures2d/cmake/download_vgg.cmake:13 (ocv_download):
Unknown CMake command "ocv_download".
Did anyone ever have this problem and knows how to solve it?
The simple answer is you are using incompatible versions of opencv and opencv_contrib, you might be installing current version of opencv_contrib on maybe opencv2.4.xx
Well, the download link for opencv contrib in CMake script https://raw.githubusercontent.com/opencv/opencv_3rdparty/fccf7cd6a4b12079f73bbfb21745f9babcd4eb1d now is 400: Invalid request.
From the commit https://github.com/opencv/opencv_contrib/commit/593e78c5d084aa0a29eb1e0459fc7f7a4dd52ea8 you can try to ignore the added line in CMakeLists include(cmake/download_vgg.cmake) and rebuild.
The below is basing on my experience, I'm not sure it will works for OpenCV 3.0.
Maybe you can try to clone opencv contrib from git, then copy it to somewhere (for example modules directory in opencv source code). Then use CMAKE to set OPENCV_EXTRA_MODULES_PATH. If the hash is correct then it won't download and use the offline package.
I have try and build success OpenCV 2.x with IPP.
Hope it help.
Just follow instructions here.
Make sure you have active internet connection while building Opencv with contrib module.
When you hit config button on cmake(gui), it downloads other files like
vgg_generated_...
boostdesc_binboost_...
boostdesc_lbgm.i
P.S: i compiled Opencv 3.1 with contrib. Cmake downloaded required files & configure was Done.
Related
I am trying to compile a cpp file from the dlib library using cmake.
When I use the command cmake ..
It gives me this error OpenCV not found, so we won't build the webcam_face_pose_ex example.
I have OpenCV installed and to be sure I just reinstalled it using brew install opencv
Would like some help on what else I could do?
Download the opencv sources and follow the instructions to build and install the project using make. This will allow make to install opencv to where it can find it later.
When complete, re-compile the dlib project using cmake.
I'm trying to compile OpenCV 3.2 with contributions with the following commands:
1.
cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=/usr/local/ -DOPENCV_EXTRA_MODULES_PATH=/home/matteo/Desktop/Xilinx/OpenCV/source/opencv_contrib/modules/ /home/matteo/Desktop/Xilinx/OpenCV/source/opencv-3.2.0/
2.
make -j7 # runs 7 jobs in parallel
3.
sudo make install
Can you explain why I get
...
........
...........
........................
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
-- Caffe: NO
-- Protobuf: NO
-- Glog: NO
-- Downloading ...
CMake Error at cmake/OpenCVUtils.cmake:1043 (file):
file DOWNLOAD cannot open file for write.
Call Stack (most recent call first):
../opencv_contrib/modules/dnn/cmake/OpenCVFindLibProtobuf.cmake:32 (ocv_download)
../opencv_contrib/modules/dnn/CMakeLists.txt:5 (include)
CMake Error at cmake/OpenCVUtils.cmake:1047 (message):
Failed to download . Status=
Call Stack (most recent call first):
../opencv_contrib/modules/dnn/cmake/OpenCVFindLibProtobuf.cmake:32 (ocv_download)
../opencv_contrib/modules/dnn/CMakeLists.txt:5 (include)
-- Configuring incomplete, errors occurred!
I'm working with Ubuntu 16.04 . I already had OpenCV on the system: maybe I unistall it in the wrong way? I remember to compile OpenCV 3.2 with the same command used above.
You must have matching versions of the opencv_contrib and the opencv itself.
Under the opencv github, go to the OpenCV releases and download the 3.2.0 (it should be the same in the master branch).
Now, go to https://github.com/opencv/opencv_contrib/releases and download the 3.2.0. Then you will have both versions matching.
After that all the cmake commands found on the README.md at opencv_contrib master branch should work fine.
I get the same error, that exact error, around the protobuf. There's another error on the xfeatures2d module, too, if your delete the dnn modules (so they don't get configured/built). My problem is, I need the "non-free" xfeatures2d module. :(
The problem appears to be in the opencv_contrib, in the DNN and xfeatures2d modules, but I'm not sure how to fix it. the call to ocv_download seems to be having empty inputs, even though the dnn and xfeatures2d cmake files are passing in arguments. I am not even a novice with cmake, so I'm not sure how to troubleshoot further.
I get this error on both Mac configuring for XCode and on Windows configuring for Visual Studio, using the latest version of cmake-gui, 3.8.0-rc3.
EDIT: I think I've found the issue, though. I opened an issue in the opencv_contrib github. There is a call to ocv_download in the dnn and xfeatures2d cmake files that uses FILENAME as the first parameter, but should be using PACKAGE instead. When I changed the parameters to PACKAGE, CMake successfully configured opencv with the opencv_contrib modules.
Hope this helps! :)
You might not use the same version of opencv and opencv_contrib
https://github.com/opencv/opencv_contrib/archive/<version>.zip
https://github.com/opencv/opencv/archive/<version>.zip
like master or 3.2.0
SHORT
You need to have the same version in opencv and opencv_contrib (.../opencv_contrib/modules/... belongs to an independent repo).
Either the same release or the last commit in BOTH repositories.
Check which version you have and move the other. In your case, I guess you have to change the version of opencv_contrib, then move to the release with git or download it from github.
git checkout <number_opencv_version i.e. 3.2.0>
LONG
I guess as Ken Lee, that you do not have the same version in the repositories.
As Matt referenced in the opened issue, there is a problem with the call of ocv_download because the version is not the one that was used when opencv-3.1, therefore it fails because the parameter is not the expected one.
It happens to me when I was using opencv 3.1.0 and the last version of opencv_contrib. You could change the cmake files one by one, but it is easier to take the correct version in each repo.
There is a right conflict in your build folder (may result from your previous sudo make install). I don't remember how I fixed it, but you can try recursively chown to both source and build folders (or chmod to 777).
I am fairly new to C++ in general (though I am getting used to the basics), but now I am trying to add OpenCV to my projects to access some of the basic image processing features. I have read the documentation so I have a pretty good idea where to start, but I am really stuck with the installation.
I am working with Code::Blocks 16.01, and I have downloaded both CMake 3.4.3 and OpenCV 3.0.0 and 3.1.0. OpenCV has been extracted to "c:\opencv", and I have attempted to finish the build with CMake (using the directions from the OpenCV documentation as well as from several older posts from this site). I am selecting "Codeblocks - MinGW Makefiles" from the list of generators, though I have selected from all of the "Codeblocks" options at one point or another.
Anyway, whenever I try to configure or generate I receive the following error: "The program can't start because libintl-8.dll is missing from your computer." So yeah, I am stuck.
It is worth noting that many, if not all, of the posts I have found refer to a directory named "\x86\mingw\lib", however I cannot find "mingw" in any of the OpenCV downloads (and the most recent is missing "x86" as well) - so none of these posts have been particularly useful to me (for example):
How to compile a program using OpenCV 2.4.3 with Code::Blocks?
Put the path to all the MinGW dll files in your pc's path variable. Check your Code::Blocks installation directory ( C:\Program Files (x86)\CodeBlocks\MinGW\bin ) if it does not exist, you'd have to download and install MinGW separately. You'd have to add the MinGW .dll files to the path environment.
I am using OpenCV 2.4.6 on my Mac using XCode IDE. I am trying to create HDR images and I found this tutorial.
When I build it, it doesn't recognize, for example, CalibrateDebevec identifier. The problem is that in the header files of photo.hpp, it is not declared. In the tutorial is written that the base is OpenCV 3.0.0.
How can I make OpenCV 3.0.0 available?
I already tried to download these files from http://193.87.95.148/openwrt/mx23/trunk/dl/opencvtrunk-2.5.0/ and pasted the headers files into my include folder, but when I solve one problem, 10 more problems appear.
You can build OpenCV 3.0.0 from the current DevZone root master repository at http://code.opencv.org/projects/opencv/repository. Clone that repository and use cmake + options, make, and make install, just as you would when building any version of OpenCV. Good luck!
I'm using Fedora 17 and compiling cocos2d-x. I've got an error at the compilation when I'm launching ./make-all-linux-project.sh.
G++ tells me that GL/glfw.h does not exist and then I yum install glew but it wasn't solved. So how can I solve this?
The package glew is actually the OpenGL Extension Wrangler. In this case your error is referring to a different package - GLFW. The problem with the build script you are trying to run is that it was made for deb-based systems, not rpm-based systems like Fedora. What's going to make this more difficult is that if you use YUM to download glfw and glfw-devel, they are not the version Cocos2d-x needs, so the build will fail. What you will need to do is first download a legacy version of glfw from Git Hub and build it from source.
git clone https://github.com/glfw/glfw-legacy.git
Once you build this package, you will need to modify the Cocos2d-x make file: $COCOS_ROOT/cocos2dx/proj.linux/cocos2dx.mk to include the legacy headers and also link to the legacy lib. The build should go smoothly after this, assuming all of your other dependencies are installed. You can refer to a blog post I put together for the detailed instructions: http://voidfuture.wordpress.com/2013/10/08/building-cocos2d-x-on-rhel-fedora-centos-linux/