The motion-compensated temporal filtering is an essential part of a scalable wavelet-based video coding scheme, which applies a temporal wavelet transform in the motion direction over the frames of a video sequence. The lifting structure of the temporal filter bank tackled in this paper involves a predict operator which makes use of two motion vector fields to bidirectionally predict frames fro...

Most motion compensation methods dealt with in the literature make strong assumptions about the smoothness of the underlying motion eld. For instance, block-matching algorithms assume a blockwise-constant motion eld and are adequate under translational motion models; triangle motion compensation assumes a piecewise-planar motion eld, and this model captures zooming, warping and rotational motio...

In this paper we present a framework for analyzing and determining robot motion plans for situations in which the robot is aaected by an environment that prob-abilistically changes over time. In general, motion planning under uncertainty has recently received substantial interest, and in particular a changing-environment has been recognized as an important aspect of motion planing under uncerta...

This study evaluates the role of shock wave motion on the instability of the plume exiting an over-expanded, convergent-divergent nozzle. An array of wall pressure transducers was used to track the position of the shock in time, and a Pitot probe was used to obtain simultaneous measurement of the total pressure fluctuations at various points in the jet that emerges from the separation shock. An...

This paper describes a video coding algorithm that combines new ideas in motion estimation wavelet l ter design and wavelet based coding techniques A mo tion compensation technique using image warping and over lapped block motion compensation OBMC is employed to reduce temporal redundancies in a given image sequence This combined motion model has the advantage of repre senting more complex moti...

In inverse planning of lung radiotherapy, techniques are required to ensure dose coverage of target disease in the presence of tumor motion as a result of respiration. A range of published techniques for mitigating motion effects were compared for dose stability across 5 breath cycles of ±2 cm. Techniques included planning target volume (PTV) expansions, internal target volumes with (OITV) and ...

BACKGROUND Infarct size is a strong predictor of mortality and major adverse cardiovascular events after myocardial infarction. Acute reperfusion therapy limits infarct size and improves survival, but its use has been confined to patients with ST-segment-elevation myocardial infarction. The purpose of this study was to assess the relationship between echocardiographic parameters of left ventric...

It has recently been reported (Van Dijk et al., 2011) that in-scanner head motion can have a substantial impact on MRI measurements of resting-state functional connectivity. This finding may be of particular relevance for studies of neurodevelopment in youth, confounding analyses to the extent that motion and subject age are related. Furthermore, while Van Dijk et al. demonstrated the effect of...

Most motion compensation methods dealt with in the literature make strong assumptions about the smoothness of the underlying motion field. For instance, block-matching algorithms assume a blockwiseconstant motion field and are adequate for translational motion models; control grid interpolation assumes a block-wise bilinear motion field, and captures zooming and warping fairly well. Time-varyin...