Abstract: Document fragments are managed by the use of fragment objects. Fragment objects contain a reference to a portion of a source document. Referencing documents contain a reference to a fragment object which delivers the content of the fragment of the source document to the referencing document. The source document can be directly updated through updating the fragment of the source document contained in the referencing document via the use of the fragment object. Source document deletion is controlled by storing the references to the source document by fragment objects so that no fragment object has a reference to a nonexistent source document.

Abstract: Memory colors are colors of common objects that are known and recognized by most people of a common culture. For example, apple red, sky blue and flesh tones are memory colors. A method for correcting the color cast of an image includes selecting a portion of an image related to a memory color and indicating which memory color the selected portion should be. The color of the selected portion and the color of the memory color are compared. For example, a difference in chrominance, between the indicated memory color and the selected portion, is determined. The difference in chrominance is applied to colors of the image to generate an adjusted or corrected image. An image processing system operative to correct color cast includes a palette of memory colors and means for receiving an image portion selection and a memory color selection. A color cast calculator calculates a comparison vector. A color cast corrector shifts colors of the input image based on the comparison vector.

Abstract: A system and method for automatic and semi-automatic document indexing preferably performs document recognition procedures on scanned document data and searches for sub-section delimiters. An index or table of contents is then generated for the document based on sub-section delimiters located in the search. For example, text strings, font size, or other symbols or distinguishing characteristics are used as delimiters in order to automatically find chapter or sub-section headings. A system operator may make adjustments to the automatically determined subdivisions. Alternatively, a plurality of document pages is displayed, for example, in thumbnail form, and the system operator indicates subdivision demarcation points within the displayed thumbnails. The indicated demarcation points are used as sub-section delimiters, and document subdivision is performed as described above. In yet another alternative, demarcation symbols are added to the document prior to scanning.