public override void Show(object value)
{
var tuple = (Tuple <Point2f, Point2f>)value;
if (connectedComponent != null)
{
var validContour = connectedComponent.Contour != null;
var boundingBox = validContour ? connectedComponent.Contour.Rect : new Rect(0, 0, 1, 1);
var output = new IplImage(new Size(boundingBox.Width, boundingBox.Height), IplDepth.U8, 3);
output.SetZero();
if (validContour)
{
DrawingHelper.DrawConnectedComponent(output, connectedComponent, new Point2f(-boundingBox.X, -boundingBox.Y));
if (tuple.Item1.X > 0 && tuple.Item1.Y > 0)
{
var projectedPoint = tuple.Item1 - new Point2f(boundingBox.X, boundingBox.Y);
CV.Circle(output, new Point(projectedPoint), 3, Scalar.Rgb(255, 0, 0), -1);
}
if (tuple.Item2.X > 0 && tuple.Item2.Y > 0)
{
var projectedPoint = tuple.Item2 - new Point2f(boundingBox.X, boundingBox.Y);
CV.Circle(output, new Point(projectedPoint), 3, Scalar.Rgb(0, 255, 0), -1);
}
}
base.Show(output);
}
}
public override void Show(object value)
{
Point point;
if (value is Point)
{
point = (Point)value;
}
else if (value is Point2f)
{
var point2f = (Point2f)value;
point.X = float.IsNaN(point2f.X) ? -1 : (int)point2f.X;
point.Y = float.IsNaN(point2f.Y) ? -1 : (int)point2f.Y;
}
else
{
var point2d = (Point2d)value;
point.X = double.IsNaN(point2d.X) ? -1 : (int)point2d.X;
point.Y = double.IsNaN(point2d.Y) ? -1 : (int)point2d.Y;
}
var image = visualizer.VisualizerImage;
if (point.X < 0 || point.Y < 0 ||
point.X >= image.Width || point.Y >= image.Height)
{
points = null;
}
else if (tracking != TrackingMode.None)
{
if (points == null)
{
points = new Queue <Point>(1);
polylines.Enqueue(points);
}
points.Enqueue(point);
if (tracking == TrackingMode.Fixed)
{
var head = polylines.Peek();
head.Dequeue();
if (head.Count == 0)
{
polylines.Dequeue();
}
}
}
if (polylines.Count > 0)
{
CV.PolyLine(image, polylines.Select(ps => ps.ToArray()).ToArray(), false, Scalar.Rgb(255, 0, 0), 2);
}
CV.Circle(image, point, 3, Scalar.Rgb(0, 255, 0), 3);
if (tracking == TrackingMode.None)
{
polylines.Clear();
points = null;
}
}
public override void Show(object value)
{
var image = visualizer.VisualizerImage;
var extremes = (Tuple <Point2f, Point2f>)value;
CV.Circle(image, new Point(extremes.Item1), 3, Scalar.Rgb(255, 0, 0), -1);
CV.Circle(image, new Point(extremes.Item2), 3, Scalar.Rgb(0, 255, 0), -1);
}
public IObservable <IplImage> Process(IObservable <Tuple <IplImage, Point2f> > source)
{
return(source.Select(value =>
{
var result = value.Item1.Clone();
var point = value.Item2;
CV.Circle(result, new Point(point), Radius, Scalar.Rgb(255, 0, 0), Thickness);
return result;
}));
}
public void EncodeImage_ReturnsSingleChannelMat()
{
var image = new IplImage(new Size(320, 240), IplDepth.U8, 3);
image.SetZero();
CV.Circle(image, new Point(100, 100), 50, Scalar.Rgb(255, 0, 0));
var result = CV.EncodeImage(".jpg", image);
Assert.AreEqual(1, result.Channels);
}
internal static void Draw(IplImage image, KeyPointCollection keyPoints)
{
if (image != null)
{
var color = image.Channels == 1 ? Scalar.Real(255) : Scalar.Rgb(255, 0, 0);
var radius = DefaultRadius * (int)Math.Ceiling(image.Height / DefaultHeight);
foreach (var keyPoint in keyPoints)
{
CV.Circle(image, new Point(keyPoint), radius, color, -1);
}
}
}
protected override Action <IplImage> GetRenderer()
{
var center = Center;
var radius = Radius;
var color = Color;
var thickness = Thickness;
var lineType = LineType;
var shift = Shift;
return(image =>
{
CV.Circle(image, center, radius, color, thickness, lineType, shift);
});
}
internal static void Draw(IplImage image, object value)
{
if (image != null)
{
var color = image.Channels == 1 ? Scalar.Real(255) : Scalar.Rgb(255, 0, 0);
var thickness = DefaultThickness * (int)Math.Ceiling(image.Height / DefaultHeight);
var circles = value as IEnumerable <Circle>;
if (circles != null)
{
foreach (var circle in circles)
{
CV.Circle(image, new Point(circle.Center), (int)circle.Radius, color, thickness);
}
}
else
{
var circle = (Circle)value;
CV.Circle(image, new Point(circle.Center), (int)circle.Radius, color, thickness);
}
}
}
public static void DrawConnectedComponent(IplImage image, ConnectedComponent component, Point2f offset)
{
if (component.Area <= 0)
{
return;
}
var centroid = component.Centroid + offset;
var orientation = component.Orientation;
var minorAxisOrientation = orientation + Math.PI / 2.0;
var halfMajorAxis = component.MajorAxisLength * 0.5;
var halfMinorAxis = component.MinorAxisLength * 0.5;
var major1 = new Point((int)(centroid.X + halfMajorAxis * Math.Cos(orientation)), (int)(centroid.Y + halfMajorAxis * Math.Sin(orientation)));
var major2 = new Point((int)(centroid.X - halfMajorAxis * Math.Cos(orientation)), (int)(centroid.Y - halfMajorAxis * Math.Sin(orientation)));
var minor1 = new Point((int)(centroid.X + halfMinorAxis * Math.Cos(minorAxisOrientation)), (int)(centroid.Y + halfMinorAxis * Math.Sin(minorAxisOrientation)));
var minor2 = new Point((int)(centroid.X - halfMinorAxis * Math.Cos(minorAxisOrientation)), (int)(centroid.Y - halfMinorAxis * Math.Sin(minorAxisOrientation)));
if (component.Patch != null)
{
var target = image;
var patch = component.Patch;
var mask = patch.Channels == 1 ? patch : null;
try
{
if (component.Contour != null)
{
var rect = component.Contour.Rect;
mask = new IplImage(patch.Size, patch.Depth, 1);
mask.SetZero();
CV.DrawContours(mask, component.Contour, Scalar.All(255), Scalar.All(0), 0, -1, LineFlags.Connected8, new Point(-rect.X, -rect.Y));
if (image.Width != rect.Width || image.Height != rect.Height)
{
target = image.GetSubRect(component.Contour.Rect);
}
}
if (patch.Channels != target.Channels)
{
var conversion = patch.Channels > image.Channels
? ColorConversion.Bgr2Gray
: ColorConversion.Gray2Bgr;
patch = new IplImage(patch.Size, patch.Depth, image.Channels);
CV.CvtColor(component.Patch, patch, conversion);
}
CV.Copy(patch, target, mask);
}
finally
{
if (patch != component.Patch)
{
patch.Dispose();
}
if (mask != component.Patch)
{
mask.Dispose();
}
if (target != image)
{
target.Dispose();
}
}
}
else if (component.Contour != null)
{
CV.DrawContours(image, component.Contour, Scalar.All(255), Scalar.All(0), 0, -1, LineFlags.Connected8, new Point(offset));
}
if (component.Contour != null)
{
CV.DrawContours(image, component.Contour, Scalar.Rgb(255, 0, 0), Scalar.Rgb(0, 0, 255), 0, 1, LineFlags.Connected8, new Point(offset));
}
CV.Line(image, major1, major2, Scalar.Rgb(0, 0, 255));
CV.Line(image, minor1, minor2, Scalar.Rgb(255, 0, 0));
CV.Circle(image, new Point(centroid), 2, Scalar.Rgb(255, 0, 0), -1);
}