Version 8.0

• Pure .NET WPF TWAIN Scanning SDK created.
• Improved algorithm of Memory transfer mode when JPEG or CCITT4 compressed image is transferred.
• Optimized image acquisition algorithm for better compatibility with Kodak, HP, Canon, Plustek scanners.
• Improved despeckle and border removal algorithms.
• Memory usage optimized.
• New demos for WPF created.
• Some major and minor fixes.

Version 7.1

• .NET Framework 4.0 Client Profile supported.
• Memory usage optimized.
• Image processing functions optimized.
• Image acquisition algorithm optimized for compatibility with HP ScanJet 9000 scanner (blur black-white images).
• Image acquisition algorithm optimized for compatibility with Canon scanners (inverted color images).
• Image acquisition algorithm optimized for compatibility with WIA drivers.
• Some major and minor fixes.

Version 7.0

• Created new hierarchy of classes.
• .NET 4.0 supported.
• Native 64-bit mode supported.
• New image processing functions added: invert, change brightness, change contrast.
• Memory usage optimized.
• Added support for compression in Memory transfer mode.
• Added ability to use scanners from console application.
• Created new detailed SDK documentation with upgrading guide from version 6.0 to 7.0.
• New Demos created: TWAIN Simple Demo, TWAIN Advanced Demo, TWAIN Custom UI Demo, TWAIN File Transfer Demo, TWAIN Console Demo, Web TWAIN Demo.
• Some major and minor fixes.

Version 6.0

• Added ability to save acquired images to PDF/A compliant document.
• Added ability to save acquired images to TIFF or PDF files using ZIP compression.
• Image acquisition algorithm optimized.
• Memory usage optimized.
• Some minor fixes.

Version 5.1

• Added ability to swap images in the internal images buffer.
• Fixed bug in CCITT compression algorithm of PDF encoder.
• Some minor fixes.

Version 5.0

• TWAIN 2.0 specification supported.
• Added ability to detect if TWAIN is installed in the system.
• Added ability to specify path to TWAIN Data Source Manager. This feature allowed to use the SDK in Citrix systems.
• Added ability to detect if scanner has flatbed.
• Function which work with device capabilites optimized.
• Image processing functions optimized.
• Some major and minor fixes.
• Examples updated.

Version 4.4

• Added opportunity to save/load current settings of device.
• Added opportunity to create predefined session setups for mid- and high-volume scanners.
• Fixed memory leak in GetImage/GetCurrentImage method.
• Optimized DuplexEnabled property for compatibility with Epson GT 2500 scanner.

Version 4.3

• Allowed to add image into multipage TIFF or PDF file stored in a stream.
• Allowed to get/set the layout of image scanned in JavaScript more easily via two new methods (GetImageLayout and SetImageLayout).
• Added ability to disable exceptions during image processing.
• Examples updated.

Version 4.2

• Added ability to retrieve extended image information (barcode info, patch code info, ...) from scanner.
• Documentation in Visual Studio .NET 2005 format created.
• Allowed to add PDF tags (author, title, subject, creator, producer, keywords, creation and modification date) to PDF file.
• Added ability to create log-file and send it to VintaSoft support team if scanner does not work properly.
• SDK optimized for compatibility with Fujitsu scanners which support automatic border detection feature.
• Despeckle and border detection algorithms optimized.
• Examples updated.

Version 4.0

• Allowed to save acquired image to a new PDF document compatible with version 1.4 of PDF specification.
• Allowed to add acquired image into an existing PDF document compatible with version 1.4 or earlier of PDF specification.
• Exception mechanism added - all properties and methods threw exceptions (TwainException, ImagingException, PdfException) if error occured. Previous versions of library did not throw exceptions.
• Despeckle algorithm updated.
• Examples updated.
• Some minor fixes.

Version 3.1

• Optimized acquisition algorithm for compatibility with HP and Fujitsu scanners.
• Added opportunity to use any authentication scheme (such as basic, digest, NTLM, and Kerberos authentication) at image uploading.
• Redirection functionality added to image uploading algorithm.

Version 3.0

• Allowed to upload several acquired images per session to HTTP, HTTPS or FTP server via two new classes.
• New documentation in MSDN format created. XML documentation file created.
• Examples for MS Visual Studio .NET 2005 and Borland Developer Studio 2006 added.
• Examples for MS Visual Studio .NET 2003 and Borland Developer Studio 2003 updated.
• PostScan event deleted, added two new events (ImageAcquired and ScanCompleted).
• Image rotation function (RotateImage method) added.
• Adde new properties (DeviceOnline, ShowIndicators, JobControl, CapValueType).
• Rotation and NoiseLevelInBlankImage properties deleted.
• All properties began with the upper letter. C# code which uses library must be updated.

Version 2.1.5

• Modified image uploading process for compatibility with IIS 6 and IIS 7 servers.
• Fixed bug in scanning process from separate thread.

Version 2.1.1

• Added Ability to set a cookie in image uploading session. This can be useful if you must authenticate with the Lotus Domino server.
• Fixed bug in work with ADF of Canon MF5530/5550.

Version 2.1

• Image processing functions optimized and accelerated.
• Allowed to create custom progress indicator of image scan.
• Updated scanning process algorithm for compatibility with Fujitsu scanners.
• Examples updated.

Version 2.0

• Added functionality for detecting correct position of image (deskew).
• Image processing functions (despeckle, border detection, blank page detection) optimized.
• .NET 2.0 supported.