public void TestSVM()
{
int trainSampleCount = 150;
int sigma = 60;
#region Generate the training data and classes
Matrix<float> trainData = new Matrix<float>(trainSampleCount, 2);
Matrix<float> trainClasses = new Matrix<float>(trainSampleCount, 1);
Image<Bgr, Byte> img = new Image<Bgr, byte>(500, 500);
Matrix<float> sample = new Matrix<float>(1, 2);
Matrix<float> trainData1 = trainData.GetRows(0, trainSampleCount / 3, 1);
trainData1.GetCols(0, 1).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
trainData1.GetCols(1, 2).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
Matrix<float> trainData2 = trainData.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainData2.SetRandNormal(new MCvScalar(400), new MCvScalar(sigma));
Matrix<float> trainData3 = trainData.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainData3.GetCols(0, 1).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
trainData3.GetCols(1, 2).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
Matrix<float> trainClasses1 = trainClasses.GetRows(0, trainSampleCount / 3, 1);
trainClasses1.SetValue(1);
Matrix<float> trainClasses2 = trainClasses.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainClasses2.SetValue(2);
Matrix<float> trainClasses3 = trainClasses.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainClasses3.SetValue(3);
#endregion
using (SVM model = new SVM())
{
SVMParams p = new SVMParams();
p.KernelType = Emgu.CV.ML.MlEnum.SVM_KERNEL_TYPE.LINEAR;
p.SVMType = Emgu.CV.ML.MlEnum.SVM_TYPE.C_SVC;
p.C = 1;
p.TermCrit = new MCvTermCriteria(100, 0.00001);
//bool trained = model.Train(trainData, trainClasses, null, null, p);
bool trained = model.TrainAuto(trainData, trainClasses, null, null, p.MCvSVMParams, 5);
model.Save("svmModel.xml");
for (int i = 0; i < img.Height; i++)
{
for (int j = 0; j < img.Width; j++)
{
sample.Data[0, 0] = j;
sample.Data[0, 1] = i;
float response = model.Predict(sample);
img[i, j] =
response == 1 ? new Bgr(90, 0, 0) :
response == 2 ? new Bgr(0, 90, 0) :
new Bgr(0, 0, 90);
}
}
int c = model.GetSupportVectorCount();
for (int i = 0; i < c; i++)
{
float[] v = model.GetSupportVector(i);
PointF p1 = new PointF(v[0], v[1]);
img.Draw(new CircleF(p1, 4), new Bgr(128, 128, 128), 2);
}
}
// display the original training samples
for (int i = 0; i < (trainSampleCount / 3); i++)
{
PointF p1 = new PointF(trainData1[i, 0], trainData1[i, 1]);
img.Draw(new CircleF(p1, 2.0f), new Bgr(255, 100, 100), -1);
PointF p2 = new PointF(trainData2[i, 0], trainData2[i, 1]);
img.Draw(new CircleF(p2, 2.0f), new Bgr(100, 255, 100), -1);
PointF p3 = new PointF(trainData3[i, 0], trainData3[i, 1]);
img.Draw(new CircleF(p3, 2.0f), new Bgr(100, 100, 255), -1);
}
}
private Image <Bgr, Byte> svm()
{
Stopwatch timer = new Stopwatch();
timer.Start();
int trainSampleCount = 150;
int sigma = 60;
#region Generate the training data and classes
Matrix <float> trainData = new Matrix <float>(trainSampleCount, 2);
Matrix <float> trainClasses = new Matrix <float>(trainSampleCount, 1);
Image <Bgr, Byte> img = new Image <Bgr, byte>(500, 500);
Matrix <float> sample = new Matrix <float>(1, 2);
Matrix <float> trainData1 = trainData.GetRows(0, trainSampleCount / 3, 1);
trainData1.GetCols(0, 1).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
trainData1.GetCols(1, 2).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
Matrix <float> trainData2 = trainData.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainData2.SetRandNormal(new MCvScalar(400), new MCvScalar(sigma));
Matrix <float> trainData3 = trainData.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainData3.GetCols(0, 1).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
trainData3.GetCols(1, 2).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
Matrix <float> trainClasses1 = trainClasses.GetRows(0, trainSampleCount / 3, 1);
trainClasses1.SetValue(1);
Matrix <float> trainClasses2 = trainClasses.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainClasses2.SetValue(2);
Matrix <float> trainClasses3 = trainClasses.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainClasses3.SetValue(3);
#endregion
timer.Stop();
MessageBox.Show("生成" + timer.ElapsedMilliseconds + "ms");
timer.Reset();
timer.Start();
using (SVM model = new SVM()) {
SVMParams p = new SVMParams();
p.KernelType = Emgu.CV.ML.MlEnum.SVM_KERNEL_TYPE.LINEAR;
p.SVMType = Emgu.CV.ML.MlEnum.SVM_TYPE.C_SVC;
p.C = 1;
p.TermCrit = new MCvTermCriteria(100, 0.00001);
//model.Load(@"D:\Play Data\训练数据");
//bool trained = model.Train(trainData, trainClasses, null, null, p);
bool trained = model.TrainAuto(trainData, trainClasses, null, null, p.MCvSVMParams, 5);
timer.Stop();
MessageBox.Show("训练" + timer.ElapsedMilliseconds + "ms");
timer.Reset();
timer.Start();
for (int i = 0; i < img.Height; i++)
{
for (int j = 0; j < img.Width; j++)
{
sample.Data[0, 0] = j;
sample.Data[0, 1] = i;
//float response = model.Predict(sample);
//img[i, j] =
// response == 1 ? new Bgr(90, 0, 0) :
// response == 2 ? new Bgr(0, 90, 0) :
// new Bgr(0, 0, 90);
}
}
//model.Save(@"D:\Play Data\训练数据");
timer.Stop();
MessageBox.Show("染色" + timer.ElapsedMilliseconds + "ms");
timer.Reset();
timer.Start();
int c = model.GetSupportVectorCount();
for (int i = 0; i < c; i++)
{
float[] v = model.GetSupportVector(i);
PointF p1 = new PointF(v[0], v[1]);
img.Draw(new CircleF(p1, 4), new Bgr(128, 128, 128), 2);
}
timer.Stop();
MessageBox.Show("画圈" + timer.ElapsedMilliseconds + "ms");
timer.Reset();
timer.Start();
}
// display the original training samples
for (int i = 0; i < (trainSampleCount / 3); i++)
{
PointF p1 = new PointF(trainData1[i, 0], trainData1[i, 1]);
img.Draw(new CircleF(p1, 2.0f), new Bgr(255, 100, 100), -1);
PointF p2 = new PointF(trainData2[i, 0], trainData2[i, 1]);
img.Draw(new CircleF(p2, 2.0f), new Bgr(100, 255, 100), -1);
PointF p3 = new PointF(trainData3[i, 0], trainData3[i, 1]);
img.Draw(new CircleF(p3, 2.0f), new Bgr(100, 100, 255), -1);
}
timer.Stop();
MessageBox.Show("标点" + timer.ElapsedMilliseconds + "ms");
timer.Reset();
timer.Start();
return(img);
}
public void TestSVM()
{
int trainSampleCount = 150;
int sigma = 60;
#region Generate the training data and classes
Matrix <float> trainData = new Matrix <float>(trainSampleCount, 2);
Matrix <float> trainClasses = new Matrix <float>(trainSampleCount, 1);
Image <Bgr, Byte> img = new Image <Bgr, byte>(500, 500);
Matrix <float> sample = new Matrix <float>(1, 2);
Matrix <float> trainData1 = trainData.GetRows(0, trainSampleCount / 3, 1);
trainData1.GetCols(0, 1).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
trainData1.GetCols(1, 2).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
Matrix <float> trainData2 = trainData.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainData2.SetRandNormal(new MCvScalar(400), new MCvScalar(sigma));
Matrix <float> trainData3 = trainData.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainData3.GetCols(0, 1).SetRandNormal(new MCvScalar(300), new MCvScalar(sigma));
trainData3.GetCols(1, 2).SetRandNormal(new MCvScalar(100), new MCvScalar(sigma));
Matrix <float> trainClasses1 = trainClasses.GetRows(0, trainSampleCount / 3, 1);
trainClasses1.SetValue(1);
Matrix <float> trainClasses2 = trainClasses.GetRows(trainSampleCount / 3, 2 * trainSampleCount / 3, 1);
trainClasses2.SetValue(2);
Matrix <float> trainClasses3 = trainClasses.GetRows(2 * trainSampleCount / 3, trainSampleCount, 1);
trainClasses3.SetValue(3);
#endregion
using (SVM model = new SVM())
{
SVMParams p = new SVMParams();
p.KernelType = Emgu.CV.ML.MlEnum.SvmKernelType.Linear;
p.SVMType = Emgu.CV.ML.MlEnum.SvmType.CSvc;
p.C = 1;
p.TermCrit = new MCvTermCriteria(100, 0.00001);
//bool trained = model.Train(trainData, trainClasses, null, null, p);
bool trained = model.TrainAuto(trainData, trainClasses, null, null, p.MCvSVMParams, 5);
#if !NETFX_CORE
String fileName = Path.Combine(Path.GetTempPath(), "svmModel.xml");
model.Save(fileName);
if (File.Exists(fileName))
{
File.Delete(fileName);
}
#endif
for (int i = 0; i < img.Height; i++)
{
for (int j = 0; j < img.Width; j++)
{
sample.Data[0, 0] = j;
sample.Data[0, 1] = i;
float response = model.Predict(sample);
img[i, j] =
response == 1 ? new Bgr(90, 0, 0) :
response == 2 ? new Bgr(0, 90, 0) :
new Bgr(0, 0, 90);
}
}
int c = model.GetSupportVectorCount();
for (int i = 0; i < c; i++)
{
float[] v = model.GetSupportVector(i);
PointF p1 = new PointF(v[0], v[1]);
img.Draw(new CircleF(p1, 4), new Bgr(128, 128, 128), 2);
}
}
// display the original training samples
for (int i = 0; i < (trainSampleCount / 3); i++)
{
PointF p1 = new PointF(trainData1[i, 0], trainData1[i, 1]);
img.Draw(new CircleF(p1, 2.0f), new Bgr(255, 100, 100), -1);
PointF p2 = new PointF(trainData2[i, 0], trainData2[i, 1]);
img.Draw(new CircleF(p2, 2.0f), new Bgr(100, 255, 100), -1);
PointF p3 = new PointF(trainData3[i, 0], trainData3[i, 1]);
img.Draw(new CircleF(p3, 2.0f), new Bgr(100, 100, 255), -1);
}
}
