New Zealand Journal of Agricultural Research abstracts
Soil pore visualisation using 3D Koch curves
Zhao Chunjiang*
Wang Gongming
Guo Xinyu
Li Changfeng
Lu Shenglian
Du Xiaohong
Hao Ruirui
National Engineering Research Center for Information Technology in
Agriculture
PO Box 2449-26, Beijing
100097, PR China
*Author for correspondence: zhaocj@nercita.org.cn
Abstract In this article an algorithm for creating 3D Koch
curves is proposed. Based on this algorithm, a 3D visualisation of soil
pores is constructed. Firstly according to the minimal value principle
of generalised energy, we computed the turning point coordinates of the
Koch curve and extended it into a 3D curve, and analysed the soil pore
structure and the aperture’s statistical characteristics; then we
modelled the quantificational control of the aperture’s variety and
distribution and transferred the agriculture parameters of the soil
into system parameters. The technique of layer rendering was used to
boost the realism of visualisation. Comparing the virtual pictures
generated with the metrical data and using the method of qualitative
and quantificational contrastive analysis, our approach can generate
soil pore 3D structures more realistically and better representing the
soil features.
Keywords 3D Koch curve; minimal value principle of
generalised energy; soil pore characteristics on a small scale; soil
pore visualisation
A07109; Online publication date 8 February 2008; Received and
accepted 10 August 2007
New Zealand Journal of Agricultural Research, 2007, Vol. 50:
919–926
0028–8233/07/5005–0919 © The Royal Society of New Zealand 2007
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