VintaSoft Barcode .NET SDK Discussions

I have a customer that is generating poor quality tif. The files show up as 1 bit BW, but have an error diffusion type dot pattern. What settings will give the most robust reading.
We place 4 barcodes with the same text on the page that is scanned.

Here is a code fragment showing the settings I am using.
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Dim aReaderSettings As New ReaderSettings
aReaderSettings.ScanBarcodeTypes = BarcodeType.Code39

aReaderSettings.RemovePeas = True
aReaderSettings.ThresholdMode = ThresholdMode.Manual
aReaderSettings.MaxBarcodes = 4
aReaderSettings.Threshold = 750 ' docs say 500 is default
aReaderSettings.ScanRectangle = New System.Drawing.Rectangle(0, 0, 0, 0)
aReaderSettings.ScanDirection = (ScanDirection.LeftToRight Or ScanDirection.TopToBottom Or ScanDirection.BottomToTop Or ScanDirection.RightToLeft)
aReaderSettings.MinConfidence = 0 ' 0 to 99
aReaderSettings.ThresholdIterations = 25

aBarcodeReader.Settings = aReaderSettings
barcodeResults = aBarcodeReader.ReadBarcodes(aSystemImage)

I take the highest confidence barcode that is returned. I can supply a problem file from this customer if it will help.

thanks.
Craig