/// <summary>
/// Detects circles on gasket image
/// </summary>
private static void DetectCircles(Image gasketImage, out Circle2D[] detectedCircles, out Segment2D[] conntectingSegments,
CoordinateSystem2D localSystem)
{
using (CircleFittingMap
circleMap1 = new CircleFittingMap(),
circleMap2 = new CircleFittingMap())
{
AVL.CreateCircleFittingMap(new ImageFormat(gasketImage),
new CircleFittingField(largeExpectedCircle, 35.0f),
localSystem, 16, 5, InterpolationMethod.Bilinear,
circleMap1);
AVL.CreateCircleFittingMap(new ImageFormat(gasketImage),
new CircleFittingField(smallExpectedCircle, 35.0f),
localSystem, 16, 5, InterpolationMethod.Bilinear,
circleMap2);
Circle2D?largeCircle, smallCircle;
AVL.FitCircleToEdges(gasketImage,
circleMap1,
scanParams,
Selection.Best, 0.1f, CircleFittingMethod.GeometricLandau,
out largeCircle);
AVL.FitCircleToEdges(gasketImage,
circleMap2,
scanParams,
Selection.Best, 0.1f, CircleFittingMethod.GeometricLandau,
out smallCircle);
conntectingSegments = new Segment2D[2];
if (largeCircle.HasValue && smallCircle.HasValue)
{
detectedCircles = new[] { largeCircle.Value, smallCircle.Value };
conntectingSegments[0] = new Segment2D(detectedCircles[0].Center, detectedCircles[1].Center);
}
else
{
detectedCircles = new Circle2D[0];
}
}
}
/// <summary>
/// Loads, process and returns next image
/// </summary>
/// <returns>Badge image with measurement results drawn on it</returns>
public void GetNextMeasuredImage(Image image)
{
if (imagePaths == null || !imagePaths.Any())
{
throw new ApplicationException("Image directory is undefined or no image could be found.");
}
if (currentImageIndex >= imagePaths.Length)
{
// start from beginning
currentImageIndex = 0;
}
//mr:: 这里的Image是 AvlNet.Image
AVL.LoadImage(imagePaths[currentImageIndex], false, image);
// Reset last distance
lastDistance = float.NaN;
//mr:: 生成本地坐标系
// Localize badge and get its local coordinate system
var localSystem = GetBadgeLocalCoordinateSystem(image);
using (var circleMap = new CircleFittingMap())
{
Circle2D?leftCircle, rightCircle;
// Create fitting map for leftmost circle
//mr:: 生成拟合Map
AVL.CreateCircleFittingMap(
new ImageFormat(image),
new CircleFittingField(leftExpectedCircle, 10.0f),
localSystem, //mr:: 如果给定了local坐标系, 则 CircleFittingField就是基于local坐标系的.
20,
3,
InterpolationMethod.Bilinear,
circleMap);
// Fit circle on image
//mr:: 开始拟合(提供 拟合Map, EdgeScanParams等参数)
AVL.FitCircleToEdges(image,
circleMap,
scanParams,
Selection.Best,
0.1f,
CircleFittingMethod.GeometricLandau,
out leftCircle);
// Create fitting map for rightmost circle
AVL.CreateCircleFittingMap(new ImageFormat(image),
new CircleFittingField(rightExpectedCircle, 10.0f),
localSystem, 20, 3,
InterpolationMethod.Bilinear,
circleMap);
//Fit circle on image
AVL.FitCircleToEdges(image, circleMap, scanParams,
Selection.Best, 0.1f,
CircleFittingMethod.GeometricLandau,
out rightCircle);
DrawResults(image, leftCircle, rightCircle);
}
++currentImageIndex;
}