private void defineCoordinateSystemButton_Click(object sender, EventArgs e)
{
// Read a template file representing a characteristic portion of the object
// used as a reference coordinate system.
imageViewer2.Image.ReadVisionFile(System.IO.Path.Combine(imagePath, "template.png"));
MatchPatternOptions matchOptions = new MatchPatternOptions(MatchMode.RotationInvariant);
matchOptions.MinimumMatchScore = 700;
matchOptions.SubpixelAccuracy = true;
DrawOptions drawOptions = new DrawOptions();
drawOptions.ShowResult = true;
FindTransformWithPattern(imageViewer1.Image, imageViewer2.Image, FindTransformMode.FindReference, matchOptions, drawOptions, transform);
// Update buttons.
defineCoordinateSystemButton.Enabled = false;
defineMeasurementsButton.Enabled = true;
}
private void defineMeasurementsButton_Click(object sender, EventArgs e)
{
// Initialize search rectangle and search annulus.
RectangleContour searchRectangle = new RectangleContour(470, 110, 30, 190);
AnnulusContour searchAnnulus = new AnnulusContour(new PointContour(366, 201), 33, 121, 42.71, 314.13);
// Overlay the search area for the distance measurement.
DrawOptions drawOptions = new DrawOptions();
drawOptions.ShowEdgesFound = true;
drawOptions.ShowSearchArea = true;
drawOptions.ShowSearchLines = true;
MeasureMaximumDistance(imageViewer1.Image, searchRectangle, RakeDirection.TopToBottom, drawOptions, new CoordinateTransform());
// Overlay the search area for the circle measurement.
FindCircularEdge(imageViewer1.Image, searchAnnulus, SpokeDirection.InsideToOutside, drawOptions, new CoordinateTransform());
// Update buttons.
defineMeasurementsButton.Enabled = false;
runButton.Enabled = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
// Get the next image.
VisionImage image = GetNextImage();
// Find the new coordinate transformation.
MatchPatternOptions matchOptions = new MatchPatternOptions(MatchMode.RotationInvariant);
matchOptions.MinimumMatchScore = 700;
matchOptions.SubpixelAccuracy = true;
DrawOptions drawOptions = new DrawOptions();
drawOptions.ShowResult = true;
FindTransformWithPattern(image, imageViewer2.Image, FindTransformMode.UpdateTransform, matchOptions, drawOptions, transform);
// Initialize search rectangle and search annulus.
RectangleContour searchRectangle = new RectangleContour(470, 110, 30, 190);
AnnulusContour searchAnnulus = new AnnulusContour(new PointContour(366, 201), 33, 121, 42.71, 314.13);
// Overlay the search area for the distance measurement.
drawOptions.ShowEdgesFound = true;
drawOptions.ShowSearchArea = true;
drawOptions.ShowSearchLines = true;
drawOptions.ShowResult = true;
double distance = MeasureMaximumDistance(image, searchRectangle, RakeDirection.TopToBottom, drawOptions, transform);
// Overlay the search area for the circle measurement.
FitCircleReport circleReport = FindCircularEdge(image, searchAnnulus, SpokeDirection.InsideToOutside, drawOptions, transform);
// Display results.
distanceBox.Text = String.Format("{0:0.00}", distance);
centerXBox.Text = String.Format("{0:0.00}", circleReport.Center.X);
centerYBox.Text = String.Format("{0:0.00}", circleReport.Center.Y);
radiusBox.Text = String.Format("{0:0.00}", circleReport.Radius);
// Display the image.
imageViewer1.Attach(image);
}
private double MeasureMaximumDistance(VisionImage image, RectangleContour searchRectangle, RakeDirection rakeDirection, DrawOptions drawOptions, CoordinateTransform transform)
{
// Convert the search rectangle to an Roi.
Roi roi = searchRectangle.ConvertToRoi();
// Transform the Roi.
Algorithms.TransformRoi(roi, transform);
// Perform a rake operation.
RakeReport report = Algorithms.Rake(image, roi, rakeDirection, EdgeProcess.FirstAndLast);
// Find the maximum edge positions and compute the distance.
Collection <LineContour> perpendicularLines;
PointContour closestFirstEdge, closestLastEdge;
double distance = FindMinMaxPosition(report, out perpendicularLines, out closestFirstEdge, out closestLastEdge);
// Draw the results.
if (drawOptions.ShowSearchLines)
{
foreach (SearchLineInfo lineInfo in report.SearchLines)
{
image.Overlays.Default.AddLine(lineInfo.Line, Rgb32Value.BlueColor);
}
}
if (drawOptions.ShowSearchArea)
{
image.Overlays.Default.AddRoi(roi);
}
if (drawOptions.ShowEdgesFound)
{
foreach (EdgeInfo edgeInfo in report.FirstEdges)
{
image.Overlays.Default.AddRectangle(new RectangleContour(edgeInfo.Position.X - 1, edgeInfo.Position.Y - 1, 3, 3), Rgb32Value.YellowColor, DrawingMode.PaintValue);
}
foreach (EdgeInfo edgeInfo in report.LastEdges)
{
image.Overlays.Default.AddRectangle(new RectangleContour(edgeInfo.Position.X - 1, edgeInfo.Position.Y - 1, 3, 3), Rgb32Value.YellowColor);
}
}
if (drawOptions.ShowResult)
{
// Overlay the measurement edge points.
image.Overlays.Default.AddOval(new OvalContour(closestFirstEdge.X - 2, closestFirstEdge.Y - 2, 5, 5), Rgb32Value.RedColor, DrawingMode.PaintValue);
image.Overlays.Default.AddOval(new OvalContour(closestLastEdge.X - 2, closestLastEdge.Y - 2, 5, 5), Rgb32Value.RedColor, DrawingMode.PaintValue);
// Overlay the two lines that point inward from the search area to the clamp position.
LineContour line1 = new LineContour(FindMidpoint(report.SearchLines[0].Line.Start, report.SearchLines[report.SearchLines.Count - 1].Line.Start),
FindMidpoint(perpendicularLines[0]));
image.Overlays.Default.AddLine(line1, Rgb32Value.RedColor);
DrawArrow(image.Overlays.Default, line1, Rgb32Value.RedColor);
LineContour line2 = new LineContour(FindMidpoint(report.SearchLines[0].Line.End, report.SearchLines[report.SearchLines.Count - 1].Line.End),
FindMidpoint(perpendicularLines[1]));
image.Overlays.Default.AddLine(line2, Rgb32Value.RedColor);
DrawArrow(image.Overlays.Default, line2, Rgb32Value.RedColor);
// Overlay the two lines perpendicular to the search lines that correspond to the clamp position.
image.Overlays.Default.AddLine(perpendicularLines[0], Rgb32Value.RedColor);
image.Overlays.Default.AddLine(perpendicularLines[1], Rgb32Value.RedColor);
}
return(distance);
}
private FitCircleReport FindCircularEdge(VisionImage image, AnnulusContour searchAnnulus, SpokeDirection spokeDirection, DrawOptions drawOptions, CoordinateTransform transform)
{
// Add the search rectangle to an Roi.
Roi roi = new Roi(new Shape[] { searchAnnulus });
// Transform the Roi.
Algorithms.TransformRoi(roi, transform);
// Perform a spoke operation.
SpokeReport report = Algorithms.Spoke(image, roi, spokeDirection, EdgeProcess.FirstAndLast, 8);
Collection <PointContour> circlePoints = new Collection <PointContour>();
foreach (EdgeInfo edgeInfo in report.FirstEdges)
{
circlePoints.Add(edgeInfo.Position);
}
// Fit a circle to the points found.
FitCircleReport circleReport = Algorithms.FitCircle(circlePoints);
// Draw the results.
if (drawOptions.ShowSearchLines)
{
foreach (SearchLineInfo lineInfo in report.SearchLines)
{
image.Overlays.Default.AddLine(lineInfo.Line, Rgb32Value.BlueColor);
DrawArrow(image.Overlays.Default, lineInfo.Line, Rgb32Value.BlueColor);
}
}
if (drawOptions.ShowSearchArea)
{
image.Overlays.Default.AddRoi(roi);
}
if (drawOptions.ShowEdgesFound)
{
foreach (EdgeInfo edgeInfo in report.FirstEdges)
{
image.Overlays.Default.AddRectangle(new RectangleContour(edgeInfo.Position.X - 1, edgeInfo.Position.Y - 1, 3, 3), Rgb32Value.YellowColor, DrawingMode.PaintValue);
}
}
if (drawOptions.ShowResult)
{
// Overlay the center point.
image.Overlays.Default.AddOval(new OvalContour(circleReport.Center.X - 2, circleReport.Center.Y - 2, 5, 5), Rgb32Value.RedColor, DrawingMode.PaintValue);
// Overlay the circle.
image.Overlays.Default.AddOval(new OvalContour(circleReport.Center.X - circleReport.Radius, circleReport.Center.Y - circleReport.Radius, 2 * circleReport.Radius, 2 * circleReport.Radius), Rgb32Value.RedColor, DrawingMode.DrawValue);
}
return(circleReport);
}
private void FindTransformWithPattern(VisionImage image, VisionImage template, FindTransformMode mode, MatchPatternOptions matchOptions, DrawOptions drawOptions, CoordinateTransform transform)
{
// Find the pattern in the image.
Collection <PatternMatch> matches = Algorithms.MatchPattern(image, template, matchOptions);
// If the pattern was found:
if (matches.Count > 0)
{
// The points in the Corners collection are returned like this:
//
// 0 — 1
// | |
// 3 — 2
//
// Our main axis will be along the line from point 3 to point 2 and
// our secondary axis will be from point 3 to point 0. The origin will
// be at point 3.
LineContour mainAxis = new LineContour(matches[0].Corners[3], matches[0].Corners[2]);
LineContour secondaryAxis = new LineContour(matches[0].Corners[3], matches[0].Corners[0]);
// Fill in the coordinate transform with the data obtained by the pattern matching.
transform.MeasurementSystem.Origin = matches[0].Corners[3];
transform.MeasurementSystem.Angle = matches[0].Rotation;
transform.MeasurementSystem.AxisOrientation = AxisOrientation.Direct;
// If this is the first run, fill in the reference system too.
if (mode == FindTransformMode.FindReference)
{
transform.ReferenceSystem.Origin = matches[0].Corners[3];
transform.ReferenceSystem.Angle = matches[0].Rotation;
transform.ReferenceSystem.AxisOrientation = AxisOrientation.Direct;
}
// Draw the results on the image.
if (drawOptions.ShowResult)
{
// Draw the origin.
image.Overlays.Default.AddRectangle(new RectangleContour(mainAxis.Start.X - 2, mainAxis.Start.Y - 2, 5, 5), Rgb32Value.RedColor, DrawingMode.DrawValue);
// Draw each axis.
image.Overlays.Default.AddLine(mainAxis, Rgb32Value.RedColor);
DrawArrow(image.Overlays.Default, mainAxis, Rgb32Value.RedColor);
image.Overlays.Default.AddLine(secondaryAxis, Rgb32Value.RedColor);
DrawArrow(image.Overlays.Default, secondaryAxis, Rgb32Value.RedColor);
}
}
}
