/// <summary>
/// compare a template and all the templates in a templateClass
/// </summary>
/// <param name="tc">the template class</param>
/// <param name="sample">the template to test</param>
/// <returns>a template description of the template found</returns>
internal static FoundTemplateDesc CompareTemplates(TemplateClass tc, Template sample)
{
//int maxInterCorrelationShift = (int)(templateSize * maxRotateAngle / Math.PI);
//maxInterCorrelationShift = Math.Min(templateSize, maxInterCorrelationShift+13);
double rate = 0;
double angle = 0;
Complex interCorr = default(Complex);
Template foundTemplate = null;
foreach (var template in tc.templates)
{
//
if (Math.Abs(sample.autoCorrDescriptor1 - template.autoCorrDescriptor1) > maxACFDescriptorDeviation) continue;
if (Math.Abs(sample.autoCorrDescriptor2 - template.autoCorrDescriptor2) > maxACFDescriptorDeviation) continue;
if (Math.Abs(sample.autoCorrDescriptor3 - template.autoCorrDescriptor3) > maxACFDescriptorDeviation) continue;
if (Math.Abs(sample.autoCorrDescriptor4 - template.autoCorrDescriptor4) > maxACFDescriptorDeviation) continue;
//
double r = 0;
if (checkACF)
{
r = template.autoCorr.NormDot(sample.autoCorr).Norm;
if (r < minACF)
continue;
}
if (checkICF)
{
interCorr = template.contour.InterCorrelation(sample.contour).FindMaxNorm();
r = interCorr.Norm / (template.contourNorma * sample.contourNorma);
if (r < minICF)
continue;
if (Math.Abs(interCorr.Angle) > maxRotateAngle)
continue;
}
if (template.preferredAngleNoMore90 && Math.Abs(interCorr.Angle) >= Math.PI / 2)
continue;//unsuitable angle
//find max rate
if (r >= rate)
{
rate = r;
foundTemplate = template;
angle = interCorr.Angle;
}
}
//ignore antipatterns
if (foundTemplate != null && foundTemplate.name == antiPatternName)
foundTemplate = null;
//
if (foundTemplate != null)
return new FoundTemplateDesc() { template = foundTemplate, rate = rate, sample = sample, angle = angle, name = tc.name };
else
return null;
}
/// <summary>
/// Get the nearest templateClass for the refContour
/// </summary>
/// <param name="refContour">the contour wich class's is to be found</param>
/// <param name="r">the area of the contour</param>
/// <param name="classes">the list of the classes within to search</param>
/// <returns>the nearest class or "not found"</returns>
public static FoundTemplateDesc GetNearestClass(Contour<Point> refContour, Rectangle r, List<TemplateClass> classes, HandType handType)
{
contourClasses = classes;
List<FoundTemplateDesc> foundedTemplates = new List<FoundTemplateDesc>();
Template refTemp = new Template(refContour, r.Height * r.Width);
foreach (TemplateClass tc in contourClasses)
{
if (tc.htype == handType)
{
FoundTemplateDesc templateDesc = TemplateFinder.CompareTemplates(tc, refTemp);
if (templateDesc != null) foundedTemplates.Add(templateDesc);
}
}
foundedTemplates = foundedTemplates.OrderBy(t => t.rate).ToList();
return (foundedTemplates.Count == 0) ? null : foundedTemplates.First();
}