In this paper, we consider hybrid models of mechanical systems undergoing impacts — Lagrangian hybrid systems, and study their periodic orbits in the presence of Zeno behavior, where an infinite sequence of impacts converges in finite time. The main result of this paper is explicit conditions under which the existence of stable periodic orbits for a Lagrangian hybrid system with perfectly plast...

Following PET/CT, PET/MR is the newest diagnostic whole-body hybrid imaging modality. Simultaneous PET and MR data acquisition requires novel technical solutions and offers new diagnostic opportunities. Attenuation correction (AC) and motion correction (MC) of PET data are current hot topics in PET/MR hybrid imaging research. The added diagnostic value of PET/MR in whole-body imaging is current...

This paper addresses the motion planning problem using hybrid symbolic techniques. The proposed approach develops a unified hierarchical hybrid control framework using a bismulation-based abstraction technique over the partitioned motion space that can be applied to autonomous aerial robots (3-D symbolic motion planning) or ground vehicles (2-D symbolic motion planning). The bisimulation relati...

This paper proposes a new system for detecting human motion in a monocular video stream. It is focused on precise tracking of articulated human motion based on skeleton model and joint motion detection. To realize this approach, we introduce the hybrid model consisting of optical tracking and dynamic tracking based on Bayes rule. In this paper, we also introduce the system design integrated wit...

Cues from human visual system (HVS) can be used for further optimization of compression in modern hybrid video coding platforms. We present work that explores and exploits motion related attentional limitations. Algorithms for exploiting motion triggered attention were developed and compared with MPEG AVC/H.264 encoder with various settings for different bitrate levels. For the sequences with h...

In this paper, we propose a novel markovian hybrid system CRF/HMM for gesture recognition, and a novel motion description method called gesture signature for gesture characterisation. The gesture signature is computed using the optical flows in order to describe the location, velocity and orientation of the gesture global motion. We elaborated the proposed hybrid CRF/HMM model by combining the ...

In this paper we present a robust hybrid motion/force controller for rigid robot Abstract manipulators. The main contribution of this paper is that the proposed hybrid control system is able to accomplish motion object ives in free direct ions and force object ives in constrained directions under parametric uncertainty both in robot dynamics and stiffness constraint constant. Also, the given sc...

We demonstrate coherent quantum control of a single spin driven by the motion of a mechanical resonator. The motion of a mechanical resonator is magnetically coupled to the electronic spin of a single nitrogen-vacancy center in diamond. Synchronization of spin-addressing protocols to the motion of the driven oscillator is used to fully exploit the coherence of this hybrid mechanical-spin system...

In this paper, we propose a hybrid microrobot concept to increase dynamic efficiency and adapt these systems for use in various working environments. The microrobot consists of a head capable of spiral motion, legs capable of paddling motion, and fish-like fins. We developed a prototype with a rotatable head and a body that has legs and fins. Additionally, we developed a control system and carr...