VintaSoft Twain.NET SDK is a pure .NET Library which allows to control
work of scanners, cameras and any other TWAIN devices. With this
library you can fully control the image acquisition process, use the
automatic document feeder, clean up images using noise removal, auto
border crop, blank page detection etc. Acquired images can be saved to
local disk or into table of SQL database, images also can be uploaded
onto Web or FTP server. Library was tested and has examples of use in:
VB.NET, C#,
ASP.NET, Microsoft Dynamics Axapta Document Management.
What's new in this version:
1) New hierarchy of classes.
2) .NET 4.0 supported.
3) Native 64-bit mode supported.
4) SDK was successfully tested with Kofax VRS 4.5.
5) New processing functions added: invert, change brightness, change
contrast.
6) Memory usage has been optimized.
7) Added support for compression in Memory transfer mode.
8) Ability to use scanners from console applications added.
You can see more info about library here: http://www.vintasoft.com/vstwain-dotnet-index.html