Method and apparatus for a layout of a document image

Image analysis – Histogram processing – For setting a threshold

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382173, 382176, G06F 1700

Patent

active

055553621

ABSTRACT:
The present invention provide a method for extracting a tree structure by using image analysis results of an actual document and generating a flexible layout model. A tree structure and layout model are newly generated by automatically extracting the tree structure in accordance with document image analysis before a user executes graphical correction. That is, an inputted document image is physically analyzed to extract a separator with a high possibility to separate the objects of the document and segment the above document image into a plurality of areas in accordance with the information for the separator. Then, the area segmentation is displayed on a display unit together with a document image and interactively corrected by the user to define a desired tree structure and complete a flexible layout model by setting a parameter to each node of the tree structure.

REFERENCES:
patent: 5073953 (1991-12-01), Westdijk
patent: 5185813 (1993-02-01), Tsujimoto
patent: 5379373 (1995-01-01), Hayashi et al.
Tsujimoto et al., "Understanding Multi-articled Documents", Proceedings of the 10th International Conference on Pattern Recognition, (IEEE 1990), pp. 551-556.
Casey, "Intelligent Forms Processing", IBM Systems Journal, vol. 29 No. 3 (1990), pp. 435-450.
Fletcher, "A Robust Algorithm for Text String Separation from Mixed Text/Graphics Images", IEEE Transaction on Pattern Analysis and Machine Intelligence, vol. 10 No. 6 (Nov. 1988), pp. 910-918.

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