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Scale and Rotation Invariant Detection of Singular Patterns in Vector Flow Fields

14 years 4 months ago
Scale and Rotation Invariant Detection of Singular Patterns in Vector Flow Fields
We present a method for detecting and describing features in vector flow fields. Our method models flow fields locally using a linear combination of complex monomials. These monomials form an orthogonal basis for analytic flows with respect to a correlation-based inner-product. We investigate the invariance properties of the coefficients of the approximation polynomials under both rotation and scaling operators. We then propose a descriptor for local flow patterns, and developed a method for comparing them invariantly against rigid transformations. Additionally, we propose a SIFT-like detector that can automatically detect singular flow patterns at different scales and orientations. Promising detection results are obtained on different fluid flow data.
Wei Liu, Eraldo Ribeiro
Added 08 Jun 2010
Updated 05 Aug 2010
Type Conference
Year 2010
Where S+SSPR 2010
Authors Wei Liu, Eraldo Ribeiro
I'm preparing the source code.
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