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Proceedings Paper

Image Enhancement Of Handwritten Drawings And Their Recognition Followed By Interactive Processing
Author(s): Masashi Okudaira; Naonori Ueda; Tsuyoshi Aoki
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Paper Abstract

An algorithm for preprocessing scanner input data is proposed to achieve high quality bilevelization by locally adaptive pixel density enhancement. Symbol recognition based on Segment Pair Matching (SPM) and interactive processing for creating a drawing database are also discussed. The SPM can detect symbols of different sizes simultaneously and their interior patterns are recognized by using distance transformation. Further, a structure model of a drawing is presented. Finally, there is a discussion of how the elements of each model category can be interactively processed by superimposing recognized data on the enhanced image data on a CRT screen.

Paper Details

Date Published: 20 November 1986
PDF: 9 pages
Proc. SPIE 0707, Visual Communications and Image Processing, (20 November 1986); doi: 10.1117/12.937247
Show Author Affiliations
Masashi Okudaira, Nippon Telegraph and Telephone Corporation (Japan)
Naonori Ueda, Nippon Telegraph and Telephone Corporation (Japan)
Tsuyoshi Aoki, Nippon Telegraph and Telephone Corporation (Japan)


Published in SPIE Proceedings Vol. 0707:
Visual Communications and Image Processing
T. Russell Hsing, Editor(s)

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