public static List <Point2D> GetMatchingRealWorldPolygon(
List <Annotation> annotations,
Circle realWorldCircle,
PinholeToPlaneProjection pinholeProjection)
{
var matchingPolygon = GetMatchingPolygon(annotations, realWorldCircle, pinholeProjection);
return(TransformToRealWorld(matchingPolygon.Points, pinholeProjection).ToList());
}
public static IEnumerable <Circle> ConstructRealWorldCircles(
IEnumerable <Annotation> circleAnnotations,
PinholeToPlaneProjection pinholeProjection)
{
foreach (var circleAnnotation in circleAnnotations)
{
yield return(ConstructRealWorldCircle(circleAnnotation, pinholeProjection));
}
}
public static Circle ConstructRealWorldCircle(
Annotation circleAnnotation,
PinholeToPlaneProjection pinholeProjection)
{
var realWorldPoints = TransformToRealWorld(circleAnnotation.Points, pinholeProjection).ToList();
var centerPoint = CalculateCenterPoint(realWorldPoints);
var radius = realWorldPoints.Average(p => p.DistanceTo(centerPoint));
return(new Circle(centerPoint, radius));
}
public DistanceMeasurementAnnotationRunner(AnnotationRunnerSettings settings, Calibration calibration)
: base(settings)
{
if (settings.ShapeType != AnnotationShapeType.Line)
{
throw new ArgumentException(
$"Annotation shape type must be '{nameof(AnnotationShapeType.Line)}' " +
$"for {nameof(DistanceMeasurementAnnotationRunner)}");
}
pinholeToPlaneProjection = new PinholeToPlaneProjection(calibration);
AnnotationFinished += PerformMeasurement;
}
public static Annotation GetMatchingPolygon(
List <Annotation> annotations,
Circle realWorldCircle,
PinholeToPlaneProjection pinholeProjection)
{
var cheesePolygons = annotations.Where(annotation => annotation.ShapeType == AnnotationShapeType.Polygon);
foreach (var cheesePolygon in cheesePolygons)
{
var realWorldPoints = TransformToRealWorld(cheesePolygon.Points, pinholeProjection).ToList();
var centerPoint = CalculateCenterPoint(realWorldPoints);
if (centerPoint.DistanceTo(realWorldCircle.Center) < realWorldCircle.Radius)
{
return(cheesePolygon);
}
}
throw new Exception("No matching cheese polygon found");
}
private static Shape GenerateCircleWithCalibration(Annotation annotation, Calibration calibration, double lineThickness)
{
var pinholeProjection = new PinholeToPlaneProjection(calibration);
var realWorldCircle = RealWorldAnnotationHelpers.ConstructRealWorldCircles(new [] { annotation }, pinholeProjection).Single();
var imageCirclePoints = new PointCollection(100);
foreach (var angle in SequenceGeneration.Linspace(-Math.PI, Math.PI, 100))
{
var realWorldCirclePoint = realWorldCircle.Center + new Vector2D(
realWorldCircle.Radius * Math.Cos(angle),
realWorldCircle.Radius * Math.Sin(angle));
var imageCirclePoint = pinholeProjection.InverseTransform(realWorldCirclePoint);
imageCirclePoints.Add(new Point(imageCirclePoint.X, imageCirclePoint.Y));
}
var polygon = new Polygon
{
Points = imageCirclePoints,
Stroke = Brushes.Red,
StrokeThickness = lineThickness
};
return(polygon);
}
public static IEnumerable <Point2D> TransformToRealWorld(IEnumerable <Point2D> points, PinholeToPlaneProjection pinholeProjection)
{
return(points.Select(pinholeProjection.Transform));
}
