Semi-automatic extraction and vectorisation of multicoloured cartographic objects
Semi-automatic extraction and vectorisation of multicoloured cartographic objects
- Author(s): V. Bucha ; S. Ablameyko ; T. Pridmore
- DOI: 10.1049/cp:20050079
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- Author(s): V. Bucha ; S. Ablameyko ; T. Pridmore Source: IEE International Conference on Visual Information Engineering (VIE 2005), 2005 p. 115 – 120
- Conference: IEE International Conference on Visual Information Engineering (VIE 2005)
- DOI: 10.1049/cp:20050079
- ISBN: 0 86341 507 5
- Location: Glasgow, UK
- Conference date: 4-6 April 2005
- Format: PDF
We describe a semi-automatic cartographic image interpretation system in which techniques previously applied to monochrome images are generalised to colour and extended to support digitization of the full range of multi-coloured cartographic objects. A snapping tool eases the selection of seed points, speeding interpretation. Line and area objects are identified automatically and a suitable target representation (skeleton or contour) produced for each. This simplifies interaction as the user does not have to vary his/her behaviour with object type. Multi-coloured objects can be constructed from their components with ease and correction tools such as snapping and undo both save time and decrease error rates.
Inspec keywords: vector quantisation; geographic information systems; edge detection; image colour analysis; image representation; cartography
Subjects: Computer vision and image processing techniques; Optical, image and video signal processing; Geography and cartography computing
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