WIA.ImageProcess convert to JPEG - ComAutomation_BadParamCount, Argument:FilterID

Question

Hi guys,

Not really sure if this is the right place for this question, however I am pulling my hair out and wanted to see if anyone can help me. Basicaly I am trying to configure my Silverlight App to connect a local scanner, aquire the image and save it to the databse. I have prety much all of it working, however the WIA.ShowAquireImage is genarating images in Bitmap and I am trying to convert them to JPEG before saving it to the SQL DB. I have implemented this sode:

                If imageFile.FormatID <> wiaFormatJPEG Then
                    Dim ip As Object = AutomationFactory.CreateObject("WIA.ImageProcess")
                    ip.Filters.Add(ip.FilterInfos("Convert").FilterID)
                    ip.Filters(1).Properties("FormatID").Value = wiaFormatJPEG
                    ip.Filters(1).Properties("Quality").Value = 20
                    imageFile = ip.Apply(imageFile)
                End If

However I am getting ComAutomation_BadParamCount, Argument: FilterID. Can anyone help me or at least point me in the right direction?

Thanks

SD

Answer 1

If you are tring to convert bitmap to jpg, ImageTools for silverlight will do what you want.

For details, please refer to

http://imagetools.codeplex.com/wikipage?title=Working%20with%20different%20image%20formats&referringTitle=Home