The XWand is a wireless UI device that enables styles of natural interaction with intelligent environments. The XWand system exploits human intuition, allowing control of everyday objects through pointing and gesturing. We describe the hardware device and then examine several approaches to gesture recognition. We discuss results from experiments using a linear time warping method, a dynamic tim...

In this paper a motion estimation algorithm is presented, based on spatio-temporal warping of an image sequence. The motion field function is modeled by isoparametric cubic finite elements, depending on a set of elementary displacement vectors. A model refinement scheme is proposed for the adaptively higher bit allocation to motion information in locations with high motion activity. Keywords— M...

Frequency warping using allpass structures or Laguerre filters has found increasingly applications in audio signal processing due to good match with the auditory frequency resolution. Kautz filters are an extension where the frequency warping and related resolution can have more freedom. In this paper we discuss the properties of Kautz filters and how they meet typical requirements found in mod...

A stereo vision system for detecting 3D-objects is presented. The method uses a pair of externally uncalibrated cameras and is able t o detect objects located on a staircase. Detection is based on differencing stereo pair images, where a warping transform is used to overlay the left onto the right image, and vice versa. The 3D camera positions are obtained through model t~ased pose estimation a...

This paper aims to develop a writing robot by recognizing the speech signal from the user. The robot arm constructed mainly for the disabled people who can’t perform writing on their own. Here, dynamic time warping (DTW) algorithm is used to recognize the speech signal from the user. The action performed by the robot arm in the environment is done by reducing the redundancy which frequently fac...

Dynamic time warping is a simple classic method for aligning two sampled functions of time. The sequence of time shifts computed by this method are a globally optimal solution to a non-linear optimization problem with linear inequality constraints that may be directly related to subsurface properties. In applications to seismic traces, the time shifts may increase or decrease rapidly in time (a...

In this thesis, I designed and implemented a background subtraction method based upon disparity verification that is invariant to run-time changes in illumination. Using two or more cameras, the method models the background by using disparity maps, which warp the primary image to each of the additional auxiliary images. During run-time, segmentation is performed by checking the color and lumino...

We analyze supersymmetry breaking by anti-self-dual flux in the deformed conifold. This theory has been argued to be a dual realization of susy breaking by antibranes. As such, one might expect it to lead to a hierarchically small breaking scale, but only if the warp factor is taken into account. We verify this by explicitly computing the warp-modified moduli space metric. This leads to a new t...

Time series are a ubiquitous form of data occurring in virtually every scientific discipline. A common task with time series data is comparing one sequence with another. In some domains a very simple distance measure, such as Euclidean distance will suffice. However, it is often the case that two sequences have the approximately the same overall component shapes, but these shapes do not line up...

Expression cloning plays an important role in facial expression synthesis. In this paper, a novel algorithm is proposed for facial expression cloning. The proposed algorithm first introduces a new elastic model to balance the global and local warping effects, such that the impacts from facial feature diversity among people can be minimized, and thus more effective geometric warping results can ...