public WeakClassifier(HaarFeatureType type, int height, int width, int x, int y)
{
if (type == HaarFeatureType.Type1 && width % 2 != 0)
{
throw new ArgumentException("Width must be even", nameof(width));
}
if (type == HaarFeatureType.Type2 && height % 2 != 0)
{
throw new ArgumentException("Height must be even", nameof(height));
}
if (type == HaarFeatureType.Type3 && width % 3 != 0)
{
throw new ArgumentException("Width must be odd and divisible by 3", nameof(width));
}
if (type == HaarFeatureType.Type4 && height % 3 != 0)
{
throw new ArgumentException("Height must be odd and divisible by 3", nameof(height));
}
if (type == HaarFeatureType.Type5)
{
if (width % 2 != 0)
{
throw new ArgumentException("Width must be odd", nameof(width));
}
if (height % 2 != 0)
{
throw new ArgumentException("Height must be odd", nameof(height));
}
}
Type = type;
XPos = x;
YPos = y;
Width = width;
Height = height;
Parity = 1;
Threshold = 0.2;
}
public static List <WeakClassifier> CreateFeatures(HaarFeatureType type, int maxHeight, int maxWidth)
{
var features = new List <WeakClassifier>();
var heightBreak = false;
var widthBreak = false;
var yBreak = false;
for (int i = 1; i <= maxHeight; i++)
{
for (int j = 1; j <= maxWidth; j++)
{
for (int y = 0; y <= maxHeight - i; y++)
{
for (int x = 0; x <= maxWidth - j; x++)
{
try
{
features.Add(new WeakClassifier((HaarFeatureType)type, i, j, x, y));
}
catch (ArgumentException ae)
{
if (ae.ParamName == "width")
{
widthBreak = true;
break;
}
if (ae.ParamName == "height")
{
heightBreak = true;
break;
}
}
}
if (yBreak)
{
yBreak = false;
continue;
}
if (widthBreak || heightBreak)
{
break;
}
}
if (widthBreak)
{
widthBreak = false;
continue;
}
if (heightBreak)
{
break;
}
}
if (heightBreak)
{
heightBreak = false;
continue;
}
}
return(features);
}
public WeakClassifier(HaarFeatureType type, int height, int width)
{
Type = type;
}