Authors: Žunić, Joviša 
Rosin, Paul
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: An alternative approach to computing shape orientation with an application to compound shapes
Journal: International Journal of Computer Vision
Volume: 81
Issue: 2
First page: 138
Last page: 154
Issue Date: 1-Feb-2009
Rank: M21a
ISSN: 0920-5691
DOI: 10.1007/s11263-008-0149-1
We consider the method that computes the shape orientation as the direction α that maximises the integral of the length of projections, taken to the power of 2N, of all the straight line segments whose end points belong to the shape, to a line that has the slope α. We show that for N=1 such a definition of shape orientation is consistent with the shape orientation defined by the axis of the least second moment of inertia. For N>1 this is not the case, and consequently our new method can produce different results. As an additional benefit our approach leads to a new method for computation of the orientation of compound objects.
Keywords: Early vision | Image processing | Orientation | Shape
Publisher: Springer Link

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