NDLI: A high quality vectorization combining local quality measures and global constraints

Content Provider	IEEE Xplore Digital Library
Author	Roosli, M. Monagan, G.
Copyright Year	1995
Description	Author affiliation: Inst. fur Informationssyst., Eidgenossische Tech. Hochschule, Zurich, Switzerland (Roosli, M.)
Abstract	We present a vectorization system to generate vector data which corresponds to the line structures of a raster image. The vector data consists of the primitives: "straight lane segment" and "circular arc". The vectorization system measures the quality of each primitive generated. Thus, the vectorization does not only produce high quality vector data, it also gives a precise description of the quality of the data generated. This is crucial if the requirements set by industrial applications are to be met. In order not to lose the quality of the vector data while constructing primitives into line objects, geometric constraints are incorporated already at the vectorization level: constraints like requiring segments to be parallel or perpendicular, circular arcs to be concentric, or tangents of the primitives to be equal at their connection point. After the constraints have been satisfied the resulting primitives still fulfil the quality requirements as before the constraints were imposed. The possibility to refit the generated vector data under adapted constraints allows for an efficient interactive postprocessing of the data.
Starting Page	243
Ending Page	248
File Size	721624
Page Count	6
File Format	PDF
ISBN	0818671289
DOI	10.1109/ICDAR.1995.598986
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-08-14
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Information systems Costs Data acquisition Engineering drawings Image segmentation Computer aided manufacturing CADCAM Geographic Information Systems Computer industry Hardware
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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