ScanDocument ClearVectorImages

scanDocument = scanDeviceManager.CreateScanDocument(GetselectedDeviceUniqueName(), DistanceUnit.Millimeters, false);

if (scanDocument != null)
{
    VectorImage vectorImage = scanDocument.CreateVectorImage("image1", DistanceUnit.Millimeters);

    vectorImage.SetMarkSpeed(1000);
    vectorImage.SetJumpSpeed(2000);
    vectorImage.SetJumpDelay(100);
    vectorImage.SetMarkDelay(100);

    //Set Laser Delays
    vectorImage.SetLaserOnDelay(10);
    vectorImage.SetLaserOffDelay(10);

    CircleShape circleShape = new CircleShape();
    circleShape.CenterPoint.X = 0.0f;
    circleShape.CenterPoint.Y = 0.0f;
    circleShape.CenterPoint.Z = 0.0f;
    circleShape.Clockwise = true;
    circleShape.Radius = 10;
    circleShape.StartAngle = 0;
    circleShape.MaximumSegmentationError = 0.001f;

    vectorImage.AddCircle(circleShape);

    // Serializing the vector image
    string fileName = @"D:\test.srl";
    FileStream stream = new FileStream(fileName, FileMode.OpenOrCreate);
    BinaryWriter writer = new BinaryWriter(stream);

    vectorImage.Serialize(writer);
    writer.Close();
    stream.Close();

    // Creating vector image from file Deserialize

    stream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    BinaryReader reader = new BinaryReader(stream);

    // lets clear the vector images in scan document first
    scanDocument.ClearVectorImages();

    // Create a new empty vector image
    VectorImage newVectorImage = scanDocument.CreateVectorImage("image2", DistanceUnit.Millimeters);

    // Deserialize from file
    newVectorImage.Deserialize(reader, 1);

    // Now update the scanDocument 
    List<VectorImage> updatedVectorImageList = new List<VectorImage>();
    updatedVectorImageList.Add(newVectorImage);

    scanDocument.SetVectorImages(updatedVectorImageList);

    reader.Close();
    stream.Close();

    scanDocument.Scripts.Add(new ScanningScriptChunk("defaultScript", "ScanAll()"));

    try
    {
        scanDocument.StartScanning();
    }
    catch
    {

    }

}