public float GetDistance(PointFloatShapeFeature otherFeature)
{
var xDiff = X - otherFeature.X;
var yDiff = Y - otherFeature.Y;
var sinThetaDiff = SinTheta - otherFeature.SinTheta;
var cosThetaDiff = CosTheta - otherFeature.CosTheta;
var distance = xDiff*xDiff + yDiff*yDiff + sinThetaDiff*sinThetaDiff + cosThetaDiff*cosThetaDiff;
return distance;
}
public float GetDistance(PointFloatShapeFeature otherFeature)
{
var xDiff = X - otherFeature.X;
var yDiff = Y - otherFeature.Y;
var sinThetaDiff = SinTheta - otherFeature.SinTheta;
var cosThetaDiff = CosTheta - otherFeature.CosTheta;
var distance = xDiff * xDiff + yDiff * yDiff + sinThetaDiff * sinThetaDiff + cosThetaDiff * cosThetaDiff;
return(distance);
}
public IList <PointFloatShapeFeature> ExtractFeature(TraceGroup inTraceGroup)
{
var outVector = new List <PointFloatShapeFeature>();
float x, y, deltaX;
float sinTheta, cosTheta, sqSum;
var numPoints = 0;
foreach (var trace in inTraceGroup.Traces)
{
numPoints += trace.ChannelX.Count;
}
var xVec = new List <float>(numPoints);
var yVec = new List <float>(numPoints);
var penUpVec = new List <bool>();
foreach (var trace in inTraceGroup.Traces)
{
var tempxVec = trace.ChannelX;
var tempyVec = trace.ChannelY;
var currentStrokeSize = tempxVec.Count;
for (var point = 0; point < currentStrokeSize; point++)
{
xVec.Add(tempxVec[point]);
yVec.Add(tempyVec[point]);
if (point == currentStrokeSize - 1)
{
penUpVec.Add(true);
}
else
{
penUpVec.Add(false);
}
}
}
//Concatenating the strokes
var theta = new List <float>(numPoints);
var delta_x = new List <float>(numPoints);
var delta_y = new List <float>(numPoints);
for (var i = 0; i < numPoints - 1; i++)
{
delta_x.Add(xVec[i + 1] - xVec[i]);
delta_y.Add(yVec[i + 1] - yVec[i]);
}
//Add the control info here
sqSum = (float)Math.Sqrt(Math.Pow(xVec[0], 2) + Math.Pow(yVec[0], 2)) + _eps;
sinTheta = (1 + yVec[0] / sqSum) * _preprocNormalizeSize / 2;
cosTheta = (1 + xVec[0] / sqSum) * _preprocNormalizeSize / 2;
var feature = new PointFloatShapeFeature
{
X = xVec[0], Y = yVec[0], SinTheta = sinTheta, CosTheta = cosTheta, IsPenUp = penUpVec[0]
};
outVector.Add(feature);
for (var i = 1; i < numPoints; i++)
{
sqSum = (float)Math.Sqrt(Math.Pow(delta_x[i - 1], 2) + Math.Pow(delta_y[i - 1], 2)) + _eps;
sinTheta = (1 + delta_y[i - 1] / sqSum) * _preprocNormalizeSize / 2;
cosTheta = (1 + delta_x[i - 1] / sqSum) * _preprocNormalizeSize / 2;
feature = new PointFloatShapeFeature {
X = xVec[i], Y = yVec[i], SinTheta = sinTheta, CosTheta = cosTheta, IsPenUp = penUpVec[i]
};
outVector.Add(feature);
}
return(outVector);
}
public IList<PointFloatShapeFeature> ExtractFeature(TraceGroup inTraceGroup)
{
var outVector = new List<PointFloatShapeFeature>();
float x, y, deltaX;
float sinTheta, cosTheta, sqSum;
var numPoints = 0;
foreach(var trace in inTraceGroup.Traces)
{
numPoints += trace.ChannelX.Count;
}
var xVec = new List<float>(numPoints);
var yVec = new List<float>(numPoints);
var penUpVec = new List<bool>();
foreach(var trace in inTraceGroup.Traces)
{
var tempxVec = trace.ChannelX;
var tempyVec = trace.ChannelY;
var currentStrokeSize = tempxVec.Count;
for(var point=0; point<currentStrokeSize;point++)
{
xVec.Add(tempxVec[point]);
yVec.Add(tempyVec[point]);
if(point == currentStrokeSize-1)
{
penUpVec.Add(true);
}else
{
penUpVec.Add(false);
}
}
}
//Concatenating the strokes
var theta = new List<float>(numPoints);
var delta_x = new List<float>(numPoints);
var delta_y = new List<float>(numPoints);
for (var i = 0; i < numPoints - 1;i++ )
{
delta_x.Add( xVec[i + 1] - xVec[i]);
delta_y.Add( yVec[i + 1] - yVec[i]);
}
//Add the control info here
sqSum = (float)Math.Sqrt(Math.Pow(xVec[0], 2) + Math.Pow(yVec[0], 2)) + _eps;
sinTheta = (1 + yVec[0]/sqSum)*_preprocNormalizeSize/2;
cosTheta = (1 + xVec[0]/sqSum)*_preprocNormalizeSize/2;
var feature = new PointFloatShapeFeature
{X = xVec[0], Y = yVec[0], SinTheta = sinTheta, CosTheta = cosTheta, IsPenUp = penUpVec[0]};
outVector.Add(feature);
for (var i = 1; i < numPoints; i++ )
{
sqSum = (float)Math.Sqrt(Math.Pow(delta_x[i-1], 2) + Math.Pow(delta_y[i-1], 2)) + _eps;
sinTheta = (1 + delta_y[i-1] / sqSum) * _preprocNormalizeSize / 2;
cosTheta = (1 + delta_x[i-1] / sqSum) * _preprocNormalizeSize / 2;
feature = new PointFloatShapeFeature { X = xVec[i], Y = yVec[i], SinTheta = sinTheta, CosTheta = cosTheta, IsPenUp = penUpVec[i] };
outVector.Add(feature);
}
return outVector;
}
