Abstract: A system for collaborative document annotation whereby notes (i.e. annotations) associated with a document, such as an image or text document, are stored in a notes database on a central notes server. The documents and associated annotations are treated independently from each other whereby separate data structures are created for the documents and for the associated annotations. A web server application on the server side functions to capture requests from one or more note client applications for creating, storing, editing and retrieving annotations related to specific documents stored on the notes server. On the client side, the notes client functions to display the document that the user wishes to annotate and provides the tools necessary to permit the user to create, edit, delete, retrieve and store notes. A synchronization process transmits the annotations generated by the user from the notes client to the notes server.

Abstract: A client/server system for reading, measuring and displaying color density of documents located on a remote file system accessed over a WAN such as the Internet. The color density information displayed corresponds to specific coordinates of documents that are located on the remote image file servers. The invention provides means for reading, displaying and recording color density measurements of original digital images located on remote image file servers rather than representations of these digital images stored on the user's local computer or LAN. A web server application on the server side functions to capture measurement requests from one or more client applications for measuring, sending, recording and retrieving color density measurements related to specific positions of specific documents located on an image filer server.