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Dual Stream - Black Images (Error: Input file name not found or output file name invalid) Started by grasslead at 06-03-2008 13:57. Topic has 1 replies. LEAD Support Fo... » Developer » Scanning/Captur... » Dual Stream - Black Images (Error: Input file name not found or output file name invalid)

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06-03-2008, 13:57 grasslead Joined on 06-01-2008 Posts 2 Dual Stream - Black Images (Error: Input file name not found or output file name invalid)   Hi! We are writing a sample program to drive our Kodak i65 scanners so that, when scanning Black & White doc, it will use TIFF Group 4 compression, while scanning Color doc, it will use JPEG compression. The source code is attached for your reference. We use the QueryFileSystem method to change the camera:  Session.QueryFileSystem fileSystem, LTDTwainInterop.TwainFileSystemMessage_ChangeDirectory When doing B&W or Color document separately (by pressing “Scan BW” or “Scan Color” buttom, no error occur.  However, the image shown was ALL BLACK: When using Dual Stream, that is, setting the 4 cameras, namely the Bitonal_Top, Bitonal_Bottom, Color_Top, Color_Bottom (pressing the “Scan Both” bottom, the following error occur when trying to set the Color_Top and Color_Bottom cameras: Error: Input file name not found or output file name invalid Any idea on what are the causes of those 2 errors? Thanks!    Report

06-04-2008, 9:54 Adnan Ismail Joined on 07-31-2006 Posts 1,124 Re: Dual Stream - Black Images (Error: Input file name not found or output file name invalid) There was no attachment with your post. When attaching project files, please follow these guidelines: - Put all attachments in one ZIP or RAR file. - Make sure there are no serial numbers or unlock key strings in the project. - Please don't send your full application, but only a small test harness. Adnan Ismail LEADTOOLS Technical Support    Report

LEAD Support Fo... » Developer » Scanning/Captur... » Dual Stream - Black Images (Error: Input file name not found or output file name invalid)

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