This OpenCV tutorial is a very simple code example of GPU Cuda optical flow in OpenCV written in c++. The configuration of the project, code, and explanation are included for farneback Optical Flow method. Farneback algorithm is a dense method that is used to process all the pixels in the given image. The dense methods are slower but more accurate as all the pixels of the image are processed. In the following example, I am displaying just a few pixes based on a grid. I am not displaying all the pixes. In the opposite to dense method the sparse method like Lucas Kanade using just a selected subset of pixels. They are faster. Both methods have specific applications. Lucas-Kanade is widely used in tracking. The farneback can be used for the analysis of more complex movement in image scene and furder segmentation based on these changes. As dense methods are slightly slower, the GPU and Cuda implementation can lead to great performance improvements to calculate optical flow for all pixels o
Simple Installation opencv Visual Studio 2017
Simple installation of opencv for Visual studio 2017 by image example. Easy and fast way to start coding in opencv by Nuget packages. If your plan is going to use cuda, or some advanced opencv settings. You should install opencv in different way. For example build your own libs according to HW you have available.. This will be my next tutorial.If you want to play and make a fun in Visual Studio 2017 this is tutorial for you. All mine tutorials for Opencv is now running just based on NUGET packages installation. For most common purpose is this installation just fine.
OPENCV VISUAL STUDIO 2017 need vs141 libs version
This doesn't make any sense to me Visual Studio 2012 was 110 lib version, 2013 was 113, Visual studio 2015 has VS140 lib version and now the big step forward. Visual studio 2017 you are finding DLL, libs etc compatible with VS141.. What a big step from previous visual studio :)Instal opencv under 1 minute
On nuget package side find nuget distribution. This will install library, DLL and header just into your project. Find the right NUGET for you on https://www.nuget.org/packages
openCV for Windows
320.1.1-vs141
I just try this nuget and It works fine for 86 version build in VS 2017.
Install-Package opencv.win.native -Pre
x86/x64 builds for OpenCV 3.2 release for Visual Studio 2017
x86/x64 builds for OpenCV 3.2 release for Visual Studio 2017
Install Step by step
- Create empty C++ project
- Click on source file on Right and add new source.cpp file.
- Add source code. You will see unresolved dependencies and other staff. Just because your functions try to find where are they implemented.
- Your Visual Studio 2017 needs NUGET packages extension installed. The installation of VS17 is more modular than before, but NUGET are most common extension.
- In tools - Nuget Packages Manager - open Package Manager Console
- Write here simple Install-Package opencv.win.native -Pre OR any others you find
- On second picture you can see that Nuget is installed
Now, You can compile at least 86 released without any problem. I am tested just this packages. The next tutorial show how to build your own libraries.. See you
Troubles with opencv ZLIBD1.DLL zlib dll in some nuget packages
Hi, all friends with zlibd1.dll troubles. This NuGet package has some trouble with debug and project needs to switch to release. As in the last picture above. Look at the proof down here. All instruction above are ok. You can find nugets package that correct this problem and install in same way.. Thanks.
DEBUG
Hey,
ReplyDeletetnx for this tutorial. I have a bit of problem with it. When I am trying to show an image, calling namedWindow & imshow, I get error on the runtime: http://imgur.com/a/GNeJk
Any suggestions what could be wrong?
Best, Andrej Pangercic
Did you find a fix for this?
Deletedid you find a fix for it?
DeleteThanks for this manual.
ReplyDeleteWhen I add the OpenCV by Nuget package, my Intellisense of visual studio will be deactivated. Have you experienced such this problem?
This comment has been removed by the author.
DeleteJust opencv 2.4 by itseez.
DeleteOpencv3 by itseez does not have this problem.
This comment has been removed by the author.
ReplyDeleteThank you for this guide. Very comprehensive and informative. See also my blog
ReplyDeleteHi,compiles fine but when executing my program this error comes:"The code execution cannot proceed because zlid1.dll was not found." please help
ReplyDelete"zlibd.dll"
Deletezlibd1.dll issue too
ReplyDeletefuck this
ReplyDeletezlibd1.dll issue too
ReplyDeleteHi,
ReplyDeleteThis package have problem to run from debug. results to missing zlibd1.dll. Please use release. The release is used in last image.
You can sometimes copy dll next to your exe file because of missing system path.
Thanks