check point

Hawkeye.VisionBuilder.Workflow/Operations/Morphology/SubtractOperation.cs

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+using Hawkeye.VisionBuilder.Workflow.Datatypes;
+using Hawkeye.VisionBuilder.Workflow.Operations.Attributes;
+
+namespace Hawkeye.VisionBuilder.Workflow.Operations.Morphology;
+
+[Category("Morphology")]
+public class SubtractOperation : BaseOperation
+{
+    public string SlotName { get; set; } = "Image";
+
+    public SubtractOperation()
+    {
+        CanHaveProcessingError = false;
+    }
+
+    protected override void InterpretInternal(Context context)
+    {
+        if (!CheckImageExists(context)) return;
+        if (!CheckGrayscale(context)) return;
+
+        if (!context.Memory.ContainsKey(SlotName))
+        {
+            Status = "Slot not found";
+            Result = false;
+            return;
+        }
+
+        var first = context.ActiveImage;
+        var second = context.Memory[SlotName];
+
+        context.ActiveImage = new HawkeyeImage()
+        {
+            ImageData = first.ImageData - second.ImageData
+        };
+
+        Result = true;
+    }
+
+    public override void Save(BinaryWriter bw)
+    {
+        base.Save(bw);
+    }
+
+    public override void Load(BinaryReader br)
+    {
+        base.Load(br);
+    }
+}