private void Initialize()
{
Surface surface = this.EnvironmentParameters.SourceSurface;
Rectangle bounds = this.EnvironmentParameters.GetSelection(surface.Bounds).GetBoundsInt();
if (this._cachedCharacteristics == null)
{
this._cachedCharacteristics = new CachedValues <TensorCharacteristics>(bounds.Height, this.GetCharacteristics);
}
lock (this)
{
if (this._taskSTField == null)
{
this._cancelToken = new EdgeDetectionEffect();
this._taskSTField = StructurTensorField.FromSurfaceAsync(surface, bounds, this._diffX.GetNormalized(), null, this._cancelToken);
this._cachedCharacteristics.Invalidate();
}
}
}
private void GetCharacteristics(Rectangle rect, TensorCharacteristics[,] values)
{
StructurTensorField stField = this._taskSTField.Result;
Rectangle bounds = this.EnvironmentParameters.GetSelection(this.SrcArgs.Bounds).GetBoundsInt();
for (int y = rect.Top; y < rect.Bottom; y++)
{
for (int x = rect.Left; x < rect.Right; x++)
{
StructurTensor tensor;
if (this._weight != null)
{
tensor = stField.Convolve(x - bounds.Left, y - bounds.Top, this._weight);
}
else
{
tensor = stField[x - bounds.Left, y - bounds.Top];
}
values[x - rect.Left, y - rect.Top] = tensor.GetCharacteristics();
}
}
}
