Bats are among a variety of animals that researchers are analyzing with computer-vision methods. The focus of our work is on using shape analysis to estimate the wing beat of individual bats. Our proposed system works with thermal infrared video of bats flying in their natural environment where field conditions make it challenging to record high-quality data. We present wing beat estimates for ...

We propose an alternative to Kendall’s shape space for reflection shapes of configurations in Rm with k labelled vertices, where reflection shape consists of all the geometric information that is invariant under compositions of similarity and reflection transformations. The proposed approach embeds the space of such shapes into the space P(k − 1) of (k − 1) × (k − 1) real symmetric positive sem...

The analytical Fourier-Mellin transform is used in order to assess motion parameters between gray-level objects having the same shape with distinct scale and orientation. From results on commutative harmonic analysis, a functional is constructed in which the location of the minimum gives an estimation of the size and orientation parameters. Furthermore, when the set of geometrical transformatio...

We aim at checking safety properties on systems manipulating dynamic linked lists. First we prove that every pointer system is bisimilar to an effectively constructible counter system. We then deduce a two-step analysis procedure. We first build an over-approximation of the reachability set of the pointer system. If this overapproximation is too coarse to conclude, we then extract from it a bis...

Dentistry can contribute for the distinguishing proof of human stays after any fiascos or wrongdoings in help to other medicinal strengths. The calculation can be produced by contrasting posthumous and bet mortem dental radiographs. This work intends to acquaint photographic pictures moreover with radiographs. In this examination a form and skeleton-based shape extraction and in addition coordi...

Since their introduction in the shape analysis community, functional maps have met with considerable success due to their ability to compactly represent dense correspondences between deformable shapes. Despite the numerous advantages of such representation, however, the problem of converting a given functional map back to a point-topoint map has received a surprisingly limited interest. In this...

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Abstract. Structural pattern recognition plays a central role in many applications. Recent advances include new theoretical results, methods and successful applications. In the present talk, some recent graph-based methods for shape analysis will be shown. The presented methods include a new representation for graph-matchingbased interactive segmentation and models for the analysis of spatial r...

-Determination of the rotational symmetry of a shape is useful for object recognition and shape analysis in computer vision application. However, the usual normalization methods are inapplicable when the shape is N-fold rotationally-symmetric (N > = 3). In this paper, an efficient and reliable new method using modified Fourier transform is introduced to normalize such a 2D rotationally-symmetri...

The notion of skeleton plays a major role in shape analysis. Some usually desirable characteristics of a skeleton are: sufficient for the reconstruction of the original object, centered, thin and homotopic. The Euclidean Medial Axis presents all these characteristics in a continuous framework. In the discrete case, the Exact Euclidean Medial Axis (MA) is also sufficient for reconstruction and c...