Liu, Jia and Hewitt, W. T. and Lionheart, W.R.B. and Montaldi, J and Turner, M. (2008) A Lemon is not a Monstar: visualization of singularities of symmetric second rank tensor fields in the plane. Eurographics UK Theory and Practice of Computer Graphics (2008). pp. 99106.
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Abstract
In the visualization of the topology of second rank symmetric tensor ﬁelds in the plane one can extract some key points (degenerate points), and curves (separatrices) that characterize the qualitative behaviour of the whole tensor ﬁeld. This can provide a global structure of the whole tensor ﬁeld, and effectively reduce the complexity of the original data. To construct this global structure it is important to classify those degenerate points accurately. However, in existing visualization techniques, a degenerate point is only classiﬁed into two types: trisector and wedge types. In this work, we will apply the theory from the analysis of binary differential equations and demonstrate that, topologically, a simple degenerate point should be classiﬁed into three types: star (trisector), lemon and monstar. The later two types were mistakenly regarded as a single type in the existing visualization techniques.
Item Type:  Article 

Additional Information:  Small correction made to published version 
Uncontrolled Keywords:  visualization, tensor field, singularity theory 
Subjects:  MSC 2010, the AMS's Mathematics Subject Classification > 15 Linear and multilinear algebra; matrix theory MSC 2010, the AMS's Mathematics Subject Classification > 58 Global analysis, analysis on manifolds MSC 2010, the AMS's Mathematics Subject Classification > 68 Computer science 
Depositing User:  Prof WRB Lionheart 
Date Deposited:  13 Jun 2008 
Last Modified:  20 Oct 2017 14:12 
URI:  https://eprints.maths.manchester.ac.uk/id/eprint/1104 
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A Lemon is not a Monstar: visualization of singularities of symmetric second rank tensor fields in the plane. (deposited 27 Apr 2008)
 A Lemon is not a Monstar: visualization of singularities of symmetric second rank tensor fields in the plane. (deposited 13 Jun 2008) [Currently Displayed]
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