I want to extend Alfresco to capture image from scan to Alfresco. Can someone point me how can I do it? What library can I use to integrate with Alfresco to do this?
The simplest way to capture a scanned document is to use a scanner that can save to a network share. Make the Alfresco repository available via CIFS, and then save to the network share.
If you are still looking for a solution, take a look at Ephesoft (http://www.ephesoft.com). It is a powerful Intelligent Document Capture tool that can classify and extract meta before pushing, via CMIS, to your Alfresco repository. Let me know if you want an Enterprise Trial.