/// <summary>
/// Calculates features map. First orientations are quantized, the stable ones are selected and then they are spread.
/// </summary>
/// <param name="orientationDegImg">Orientation map. Each location represents angle in degrees [0..360].</param>
/// <param name="spreadNeigborhood">Spreading neighborhood. If 1 no spreading is done.</param>
/// <param name="minSameOrientations">Minimal number of the same orientations in [3 x 3] neighborhood to proclaim the orientation stable.</param>
/// <returns>Feature map.</returns>
public static Gray <byte>[,] Calculate(Gray <int>[,] orientationDegImg, int spreadNeigborhood, int minSameOrientations = 4)
{
Gray <byte>[,] quantizedOrient = FeatureMap.QuantizeOrientations(orientationDegImg);
Gray <byte>[,] importantQuantizedOrient = FeatureMap.RetainImportantQuantizedOrientations(quantizedOrient, minSameOrientations);
Gray <byte>[,] sprededQuantizedOrient = importantQuantizedOrient;
if (spreadNeigborhood > 1)
{
sprededQuantizedOrient = FeatureMap.SpreadOrientations(importantQuantizedOrient, spreadNeigborhood);
}
return(sprededQuantizedOrient);
}
/// <summary>
/// Calculates features map. First orientations are quantized, the stable ones are selected and then they are spread.
/// </summary>
/// <param name="orientationDegImg">Orientation map. Each location represents angle in degrees [0..360].</param>
/// <param name="spreadNeigborhood">Spreading neighborhood. If 1 no spreading is done.</param>
/// <param name="minSameOrientations">Minimal number of the same orientations in [3 x 3] neighborhood to proclaim the orientation stable.</param>
/// <returns>Feature map.</returns>
public static Image <Gray, byte> Calculate(Image <Gray, int> orientationDegImg, int spreadNeigborhood, int minSameOrientations = 4)
{
Image <Gray, Byte> quantizedOrient = FeatureMap.QuantizeOrientations(orientationDegImg);
Image <Gray, Byte> importantQuantizedOrient = FeatureMap.RetainImportantQuantizedOrientations(quantizedOrient, minSameOrientations);
Image <Gray, Byte> sprededQuantizedOrient = importantQuantizedOrient;
if (spreadNeigborhood > 1)
{
sprededQuantizedOrient = FeatureMap.SpreadOrientations(importantQuantizedOrient, spreadNeigborhood);
}
return(sprededQuantizedOrient);
}
/// <summary>
/// Calculates features map. First orientations are quantized, the stable ones are selected and then they are spread.
/// </summary>
/// <param name="orientationDegImg">Orientation map. Each location represents angle in degrees [0..360].</param>
/// <param name="spreadNeigborhood">Spreading neighborhood. If 1 no spreading is done.</param>
/// <param name="minSameOrientations">Minimal number of the same orientations in [3 x 3] neighborhood to proclaim the orientation stable.</param>
/// <returns>Feature map.</returns>
public static Gray <byte>[,] Calculate(Gray <int>[,] orientationDegImg, int spreadNeigborhood, int minSameOrientations = 4)
{
//Quantinize the orientationIMG [ 1..360 --> 0..7 ]
Gray <byte>[,] quantizedOrient = FeatureMap.QuantizeOrientations(orientationDegImg);
// Convert the neightbor to 8-bit number [ correspond to Image J in the paper] [0..7 --> 1,2,4,8,,,128]
Gray <byte>[,] importantQuantizedOrient = FeatureMap.RetainImportantQuantizedOrientations(quantizedOrient, minSameOrientations);
Gray <byte>[,] sprededQuantizedOrient = importantQuantizedOrient;
if (spreadNeigborhood > 1)
{
sprededQuantizedOrient = FeatureMap.SpreadOrientations(importantQuantizedOrient, spreadNeigborhood);
}
return(sprededQuantizedOrient);
}