public static void testCall(string checkImage, string SearchInImage)
{
long matchTime;
int InlierThreshold = 10;
int outlier;
using (Image <Gray, Byte> modelImage = new Image <Gray, byte>(checkImage))
using (Image <Gray, Byte> observedImage = new Image <Gray, byte>(SearchInImage))
//using (Image<Gray, Byte> observedImage = new Image<Gray, byte>("NoBoy3.jpg"))
{
//Image<Bgr, byte> result = DrawMatches.Draw(modelImage, observedImage, out matchTime);
Image <Bgr, byte> result = BruteForceMatcher.Draw(modelImage, observedImage, out matchTime, out InlierThreshold, out outlier);
//ImageViewer.Show(result, String.Format("Matched using {0} in {1} milliseconds", GpuInvoke.HasCuda ? "GPU" : "CPU", matchTime));
Console.WriteLine("Matched using {0} in {1} milliseconds", GpuInvoke.HasCuda ? "GPU" : "CPU", matchTime);
}
}
public static FindMatchResult FindMatchInSource(MatchInput matchInput)
{
FindMatchResult matchResult = new FindMatchResult();
long matchTime; int inLiers, outLiers;
string MatchFolderPath, MatchFile, MatchAbsolutePath, MatchedFaceFile;
MatchFolderPath = MatchFile = MatchedFaceFile = MatchAbsolutePath = "";
//file folders assignment
MatchFolderPath = matchInput.WebFolderPath;
MatchAbsolutePath = matchInput.FindInFile.DirectoryName + "\\" + "MatchFiles";
using (Image <Gray, Byte> modelImage = new Image <Gray, byte>(matchInput.MatchFile.FullName))
using (Image <Gray, Byte> observedImage = new Image <Gray, byte>(matchInput.FindInFile.FullName))
{
Image <Bgr, byte> result = BruteForceMatcher.Draw(modelImage, observedImage, out matchTime, out inLiers, out outLiers);
//ImageViewer.Show(result, String.Format("Matched using {0} in {1} milliseconds", GpuInvoke.HasCuda ? "GPU" : "CPU", matchTime));
if (inLiers > matchInput.InlierThreshold)
{
matchResult.Matched = true;
MatchedFaceFile = Guid.NewGuid().ToString();
bool exists = System.IO.Directory.Exists(MatchAbsolutePath);
if (!exists)
{
System.IO.Directory.CreateDirectory(MatchAbsolutePath);
}
result.Save(MatchAbsolutePath + "\\" + MatchedFaceFile + matchInput.FindInFile.Extension);
}
matchResult.Inliers = inLiers;
matchResult.Outliers = outLiers;
matchResult.FolderPath = MatchFolderPath;
matchResult.AbsolutePath = MatchAbsolutePath + "\\";
matchResult.MatchedFaceFile = MatchedFaceFile;
}
return(matchResult);
}
public static void FindMatch(Image <Gray, Byte> modelImage, Image <Gray, byte> observedImage, out long matchTime, out VectorOfKeyPoint modelKeyPoints, out VectorOfKeyPoint observedKeyPoints, out Matrix <int> indices, out Matrix <byte> mask, out HomographyMatrix homography)
{
int k = 2;
double uniquenessThreshold = 0.8;
SURFDetector surfCPU = new SURFDetector(500, false);
Stopwatch watch;
homography = null;
#if !IOS
if (GpuInvoke.HasCuda)
{
GpuSURFDetector surfGPU = new GpuSURFDetector(surfCPU.SURFParams, 0.01f);
using (GpuImage <Gray, Byte> gpuModelImage = new GpuImage <Gray, byte>(modelImage))
//extract features from the object image
using (GpuMat <float> gpuModelKeyPoints = surfGPU.DetectKeyPointsRaw(gpuModelImage, null))
using (GpuMat <float> gpuModelDescriptors = surfGPU.ComputeDescriptorsRaw(gpuModelImage, null, gpuModelKeyPoints))
using (GpuBruteForceMatcher <float> matcher = new GpuBruteForceMatcher <float>(DistanceType.L2))
{
modelKeyPoints = new VectorOfKeyPoint();
surfGPU.DownloadKeypoints(gpuModelKeyPoints, modelKeyPoints);
watch = Stopwatch.StartNew();
// extract features from the observed image
using (GpuImage <Gray, Byte> gpuObservedImage = new GpuImage <Gray, byte>(observedImage))
using (GpuMat <float> gpuObservedKeyPoints = surfGPU.DetectKeyPointsRaw(gpuObservedImage, null))
using (GpuMat <float> gpuObservedDescriptors = surfGPU.ComputeDescriptorsRaw(gpuObservedImage, null, gpuObservedKeyPoints))
using (GpuMat <int> gpuMatchIndices = new GpuMat <int>(gpuObservedDescriptors.Size.Height, k, 1, true))
using (GpuMat <float> gpuMatchDist = new GpuMat <float>(gpuObservedDescriptors.Size.Height, k, 1, true))
using (GpuMat <Byte> gpuMask = new GpuMat <byte>(gpuMatchIndices.Size.Height, 1, 1))
using (Stream stream = new Stream())
{
matcher.KnnMatchSingle(gpuObservedDescriptors, gpuModelDescriptors, gpuMatchIndices, gpuMatchDist, k, null, stream);
indices = new Matrix <int>(gpuMatchIndices.Size);
mask = new Matrix <byte>(gpuMask.Size);
//gpu implementation of voteForUniquess
using (GpuMat <float> col0 = gpuMatchDist.Col(0))
using (GpuMat <float> col1 = gpuMatchDist.Col(1))
{
GpuInvoke.Multiply(col1, new MCvScalar(uniquenessThreshold), col1, stream);
GpuInvoke.Compare(col0, col1, gpuMask, CMP_TYPE.CV_CMP_LE, stream);
}
observedKeyPoints = new VectorOfKeyPoint();
surfGPU.DownloadKeypoints(gpuObservedKeyPoints, observedKeyPoints);
//wait for the stream to complete its tasks
//We can perform some other CPU intesive stuffs here while we are waiting for the stream to complete.
stream.WaitForCompletion();
gpuMask.Download(mask);
gpuMatchIndices.Download(indices);
if (GpuInvoke.CountNonZero(gpuMask) >= 4)
{
int nonZeroCount = Features2DToolbox.VoteForSizeAndOrientation(modelKeyPoints, observedKeyPoints, indices, mask, 1.5, 20);
if (nonZeroCount >= 4)
{
homography = Features2DToolbox.GetHomographyMatrixFromMatchedFeatures(modelKeyPoints, observedKeyPoints, indices, mask, 2);
}
}
watch.Stop();
}
}
}
else
#endif
{
//extract features from the object image
modelKeyPoints = new VectorOfKeyPoint();
Matrix <float> modelDescriptors = surfCPU.DetectAndCompute(modelImage, null, modelKeyPoints);
watch = Stopwatch.StartNew();
// extract features from the observed image
observedKeyPoints = new VectorOfKeyPoint();
Matrix <float> observedDescriptors = surfCPU.DetectAndCompute(observedImage, null, observedKeyPoints);
BruteForceMatcher <float> matcher = new BruteForceMatcher <float>(DistanceType.L2);
matcher.Add(modelDescriptors);
indices = new Matrix <int>(observedDescriptors.Rows, k);
using (Matrix <float> dist = new Matrix <float>(observedDescriptors.Rows, k))
{
matcher.KnnMatch(observedDescriptors, indices, dist, k, null);
mask = new Matrix <byte>(dist.Rows, 1);
mask.SetValue(255);
Features2DToolbox.VoteForUniqueness(dist, uniquenessThreshold, mask);
}
int nonZeroCount = CvInvoke.cvCountNonZero(mask);
if (nonZeroCount >= 4)
{
nonZeroCount = Features2DToolbox.VoteForSizeAndOrientation(modelKeyPoints, observedKeyPoints, indices, mask, 1.5, 20);
if (nonZeroCount >= 4)
{
homography = Features2DToolbox.GetHomographyMatrixFromMatchedFeatures(modelKeyPoints, observedKeyPoints, indices, mask, 2);
}
}
watch.Stop();
}
matchTime = watch.ElapsedMilliseconds;
}