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Terrain modelling with B-spline type surfaces defined on curved knot lines
Affiliation:1. Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan;2. The UWA Institute of Agriculture and School of Agriculture & Environment, The University of Western Australia, Perth, WA 6001, Australia;3. College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia;4. Department of Environmental Science, Tezpur University, Tezpur 784028, Assam, India;5. Department of Agronomy, Bahauddin Zakariya University Multan, Pakistan;6. National Research Centre on Plant Biotechnology, Pusa Campus, New Delhi 110012, India;1. Sony Interactive Entertainment Euro R&D, 13 Great Marlborough Street, London W1F 7HP, UK;2. Bournemouth University, Poole House, Talbot Campus, Poole, Dorset BH12 5BB, UK
Abstract:B-spline type surfaces on curved knot lines are useful for interpolation of scattered data while preserving desirable terrain breaks or discontinuities which are not necessarily parallel to a given straight line. This paper considers data scattered along parallel scan profiles. It is shown how the large composite linear system which arises for curved knot lines in two directions may be decomposed into smaller linear systems with subsequent savings in storage and processing time.
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