Previous research has shown that people represent the abstract concept of time by constructing metaphoric mappings from the more concrete domain of space. Earlier studies have revealed that different spatial metaphorical mapping systems are employed when people think about time (e.g., front/back, ego-moving/time-moving). However, it is possible that the abstract concept of time is also represen...

Tracking and recognizing non-rigid objects in video image sequences are complex tasks of increa sing importance to many applications. For the tracking of such objects in a video sequence e.g. "active shape models" can be applied. The existing active shape models are usually based on intensity information and they do not consider color information. However, active shape models are sensitive to o...

Segmentation of the left ventricle in echocardiographic images is a task with important diagnostic power. We propose a model-based approach that aims at extracting the left ventricle for each frame of the cardiac cycle. Our approach exhibits several novel elements. Modelling consists of two separate components, one for the systolic and one for the diastolic moment. Segmentation is considered in...

Cells owe their internal organization to self-organized protein patterns, which originate and adapt to growth and external stimuli via a process that is as complex as it is little understood. Here, we study the emergence, stability, and state transitions of multistable Min protein oscillation patterns in live Escherichia coli bacteria during growth up to defined large dimensions. De novo format...

The outer or inner approximation of the convex hull of a grid point set may be used to speed up the feature extraction process in a shape analysis system. Some properties of these approximations are given.

This work presents a novel surface matching and registration method based on the landmark curve-driven canonical surface quasiconformal mapping, where an open genus zero surface decorated with landmark curves is mapped to a canonical domain with horizontal or vertical straight segments and the local shapes are preserved as much as possible. The key idea of the canonical mapping is to minimize t...

Device drivers often keep data in multiple data structures simultaneously while embedding list or tree related records into the records containing the actual data; this results in overlapping structures. Shape analyses have traditionally relied on a graph-based representation of memory where a node corresponds to a whole record and edges to pointers. As this is ill-suited for encoding overlappi...

Modeling and understanding complex non-manifold shapes is a key issue in shape analysis and retrieval. The topological structure of a non-manifold shape can be analyzed through its decomposition into a collection of components with a simpler topology. Here, we consider a decomposition of a non-manifold shape into components which are almost manifolds, and we present a novel graph representation...