check point

Hawkeye.VisionBuilder.Workflow/Operations/Basic/ThresholdOperation.cs

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+using Hawkeye.VisionBuilder.Workflow.Datatypes;
+using Hawkeye.VisionBuilder.Workflow.Operations.Attributes;
+using OpenCvSharp;
+
+namespace Hawkeye.VisionBuilder.Workflow.Operations.Basic;
+
+[Category("Basic")]
+public class ThresholdOperation:BaseOperation
+{
+
+    public ScriptValue ThresholdMin { get; set; } = new ScriptValue(){Script = "128"};
+
+    public ThresholdOperation()
+    {
+        CanHaveProcessingError = false;
+    }
+
+    protected override void InterpretInternal(Context context)
+    {
+        if (!CheckImageExists(context)) return;
+
+        if(!CheckGrayscale(context))return;
+        
+        context.ActiveImage = new HawkeyeImage()
+        {
+            ImageData = context.ActiveImage.ImageData.Threshold(GetScriptValue<float>(ThresholdMin), 255,ThresholdTypes.Binary)
+        };
+        Result = true;
+    }
+
+    public override void Save(BinaryWriter bw)
+    {
+        base.Save(bw);
+        bw.Write(ThresholdMin.Script);
+        
+    }
+
+    public override void Load(BinaryReader br)
+    {
+        base.Load(br);
+        ThresholdMin.Script = br.ReadString();
+        
+    }
+}