65 lines
1.6 KiB
C#
65 lines
1.6 KiB
C#
using System.Collections;
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using Hawkeye.VisionBuilder.Workflow.Datatypes;
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using Hawkeye.VisionBuilder.Workflow.Operations.Attributes;
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using OpenCvSharp;
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namespace Hawkeye.VisionBuilder.Workflow.Operations.Morphology;
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[Category("Morphology")]
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public class TakeBiggestOperation : BaseOperation
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{
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public TakeBiggestOperation()
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{
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CanHaveProcessingError = false;
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}
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protected override void InterpretInternal(Context context)
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{
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if (!CheckImageExists(context)) return;
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if (!CheckGrayscale(context)) return;
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var image = context.ActiveImage!.ImageData;
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Cv2.FindContours(image, out var contours, out var hierarchy, RetrievalModes.External, ContourApproximationModes.ApproxSimple);
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if (contours.Length == 0)
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{
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SetError("No blobs found.");
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return;
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}
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var largestContour = contours.OrderByDescending(c => Cv2.ContourArea(c)).First();
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var mask = Mat.Zeros(image.Size(), MatType.CV_8UC1).ToMat();
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Cv2.DrawContours(mask, new[] {largestContour}, -1, Scalar.All(255), -1);
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context.ActiveImage = new HawkeyeImage()
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{
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ImageData = mask
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};
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Status = "Biggest blob extracted";
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Result = true;
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}
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public override void Save(BinaryWriter bw)
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{
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base.Save(bw);
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}
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public override void Load(BinaryReader br)
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{
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base.Load(br);
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}
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public override void Save(Dictionary<string, object> dict)
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{
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base.Save(dict);
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}
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public override void Load(Dictionary<string, object> dict)
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{
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base.Load(dict);
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}
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}
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