Hi,
How to detect car with stream camera?
Thanks.

Hello,
is there any reason why this code is kept in separate repo and not in shimat`s opencvsharp_samples - link to repo?

Addition should be simple via pull request.

I have found your repo accidentally.
Your code may help more people if placed in shimat`s repo.

Mat image = processTrainingImage () return null

Can I use SimpleBlobDetector to calculate speed of vehicle?
Plz give me some hint to do this?

When you run sample 18

thie line below from the DoOcr() function in SimpleOCR class

var detectedClass = (int)kNearest.FindNearest(result, 1, results, neighborResponses, dists);

cause memory violation.

Ive tried to fix but no luck yet.

BTW good work!

A

When run line 31

extractor.Compute(img1, ref keypoints1, descriptors1);

Throw an AccessViolationException

I updated packages via nuget. Does not fix problem.

Thanks for your work!

It would be nice to include a sample of the Facemark face landmark detector, as there seems to be no examples to be found on the web anywhere! Trying to translate the example from the OpenCV source into OpenCvSharp seems to lead to a crash when calling fit(), so any expertise you can offer in terms of how this should be done would be much appreciated!

Here's my current (broken) code:

'''
// Load the source image and convert to greyscale
Mat input = new Mat(Path.Combine(Application.streamingAssetsPath, "aa.png"), ImreadModes.Color);
Mat grey = new Mat();
Cv2.CvtColor(input, grey, ColorConversionCodes.BGR2GRAY);
// This works, so the greyscale image is being created ok
// Cv2.ImShow("Greyscale", grey);

// Find faces in the image
var classifier = new CascadeClassifier(Path.Combine(Application.streamingAssetsPath, "haarcascade_frontalface_alt.xml"));
OpenCvSharp.Rect[] facesRects = classifier.DetectMultiScale(grey);

// This works, so faces are being found by the HAAR detector
// Debug.Log(string.Format("{0} faces detected:", facesRects.Length));
// for (int i = 0; i < facesRects.Length; i++) {
//`Debug.Log(facesRects[i].ToString());
//}

// Create a new facemark instance and load the model
OpenCvSharp.Face.Facemark facemark = OpenCvSharp.Face.FacemarkLBF.Create();
facemark.LoadModel(Path.Combine(Application.streamingAssetsPath, "lbfmodel.yaml"));

// Create inputs for the fit function
InputArray facesArray = InputArray.Create(facesRects);
Mat landmarks = new Mat();

// Following line causes a crash :(
facemark.Fit(grey, facesArray, landmarks);

thanks

I am trying to compile the samples but keep encountering errors of this variety:

Error Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\msvcp120.dll" because it was not found. OpenCVSharpSample01 C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets 4105

I have restored the nuget packages. All the references (at least for sample1, which is what I'm trying to build) are found.
It looks like I am forgetting to configure something, but for the life of me, I can't figure it out.

Any thoughts would be appreciated.

Here is the build output on "normal" verbosity:
1>------ Rebuild All started: Project: OpenCVSharpSample01, Configuration: Debug Any CPU ------
1>Build started 1/22/2016 8:25:57 PM.
1>CoreClean:
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.Blob.dll".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.CPlusPlus.dll".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.dll".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.Extensions.dll".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.UserInterface.dll".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.xml".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.Blob.xml".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.CPlusPlus.xml".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\bin\Debug\OpenCvSharp.Extensions.xml".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\obj\Debug\OpenCVSharpSample01.exe".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\obj\Debug\OpenCVSharpSample01.pdb".
1> Deleting file "C:\Devtests\GitRepos\OpenCVSharpSample01\obj\Debug\OpenCVSharpSample01.csprojResolveAssemblyReference.cache".
1>RestorePackages:
1> "C:\Devtests\GitRepos.nuget\NuGet.exe" install "C:\Devtests\GitRepos\OpenCVSharpSample01\packages.config" -source "" -NonInteractive -RequireConsent -solutionDir "C:\Devtests\GitRepos\ "
1> Restoring NuGet packages...
1> To prevent NuGet from downloading packages during build, open the Visual Studio Options dialog, click on the Package Manager node and uncheck 'Allow NuGet to download missing packages'.
1> All packages listed in packages.config are already installed.
1>GenerateTargetFrameworkMonikerAttribute:
1>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files.
1>CoreCompile:
1> C:\Program Files (x86)\MSBuild\14.0\bin\csc.exe /noconfig /nowarn:1701,1702,2008 /nostdlib+ /platform:AnyCPU /errorreport:prompt /warn:4 /define:DEBUG;TRACE /errorendlocation /preferreduilang:en-US /highentropyva- /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\Microsoft.CSharp.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\mscorlib.dll" /reference:C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Blob.dll /reference:C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.CPlusPlus.dll /reference:C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.dll /reference:C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Extensions.dll /reference:C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.UserInterface.dll /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\PresentationCore.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Core.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Data.DataSetExtensions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Data.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Drawing.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Windows.Forms.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Xml.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Xml.Linq.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\WindowsBase.dll" /debug+ /debug:full /filealign:512 /optimize- /out:obj\Debug\OpenCVSharpSample01.exe /ruleset:"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Team Tools\Static Analysis Tools\Rule Sets\MinimumRecommendedRules.ruleset" /target:exe /utf8output Program.cs Properties\AssemblyInfo.cs "C:\Users\Chris\AppData\Local\Temp.NETFramework,Version=v4.0.AssemblyAttributes.cs"
1>_CopyFilesMarkedCopyLocal:
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Blob.dll" to "bin\Debug\OpenCvSharp.Blob.dll".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.CPlusPlus.dll" to "bin\Debug\OpenCvSharp.CPlusPlus.dll".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.dll" to "bin\Debug\OpenCvSharp.dll".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Extensions.dll" to "bin\Debug\OpenCvSharp.Extensions.dll".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.UserInterface.dll" to "bin\Debug\OpenCvSharp.UserInterface.dll".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.xml" to "bin\Debug\OpenCvSharp.xml".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Blob.xml" to "bin\Debug\OpenCvSharp.Blob.xml".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.CPlusPlus.xml" to "bin\Debug\OpenCvSharp.CPlusPlus.xml".
1> Copying file from "C:\Devtests\GitRepos\packages\OpenCvSharp-AnyCPU.2.4.10.20150320\lib\net40\OpenCvSharp.Extensions.xml" to "bin\Debug\OpenCvSharp.Extensions.xml".
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\msvcp120.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\msvcr120.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\OpenCvSharpExtern.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_calib3d2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_contrib2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_core2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_features2d2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_ffmpeg2410_64.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_flann2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_gpu2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_highgui2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_imgproc2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_legacy2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_ml2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_nonfree2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_objdetect2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_ocl2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_photo2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_stitching2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_superres2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_video2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x64\opencv_videostab2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\msvcp120.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\msvcr120.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\OpenCvSharpExtern.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_calib3d2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_contrib2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_core2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_features2d2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_ffmpeg2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_flann2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_gpu2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_highgui2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_imgproc2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_legacy2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_ml2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_nonfree2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_objdetect2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_ocl2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_photo2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_stitching2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_superres2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_video2410.dll" because it was not found.
1>C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4105,5): error MSB3030: Could not copy the file "C:\Devtests\GitRepos\OpenCVSharpSample01\dll\x86\opencv_videostab2410.dll" because it was not found.
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.40
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========