In this paper, we applied local warping techniques to construct a frame work of image-based morphing for facial expressions animation with low complexity. From the experience we obtained in various spatial transformations, the local warping methods are more adequate for facial expressions morphing. We utilized two transformations that can deal with local deformations: piecewise polynomial trans...

In this paper, we describe some considerations on a speaker-independent word recognition method on a large vocabulary size by the concatenation of syllable templates and a stochastic dynamic time warping method, where syllable templates are taken from spoken words. We got the reference patterns from 216 words uttered by 30 male speakers and recognized the other 200 words uttered by the other 10...

Nowadays a wide variety of warping applications is known, like educational ones and entertainment ones. The method presented in this work modifies conventional warping techniques in order to applicate it in ageing facial manipulation. We used ageing curves of facial region to show forward and backward ageing face.

Among the class of block-based motion estimators, warping prediction and overlapped block motion estimation have emerged recently as two of the most eeective inter-frame estimation algorithms. Warping estimation is based on linear operations in the motion eld, while overlapped block estimators are based on a linear sum of motion-based estimators in the intensity eld. In this paper, we propose a...

The inner region of the accretion disk around a magnetized neutron star is subjected to magnetic torques that induce warping and precession of the disk. These torques arise from interactions between the stellar field and the induced electric currents in the disk. We carry out a global analysis of warping/precession modes in a viscous accretion disk, and show that under a wide range of condition...

UNLABELLED motivation: Increasingly, biological processes are being studied through time series of RNA expression data collected for large numbers of genes. Because common processes may unfold at varying rates in different experiments or individuals, methods are needed that will allow corresponding expression states in different time series to be mapped to one another. RESULTS We present impl...

UNLABELLED Dynamic time warping (DTW) is a well-known quadratic time algorithm to determine the smallest distance and optimal alignment between two numerical sequences, possibly of different length. Originally developed for speech recognition, this method has been used in data mining, medicine and bioinformatics. For gene expression time series data, time warping distance is arguably a more fle...

Vocal Tract Length Normalization (VLTN), usually implemented as a frequency warping procedure (e.g. bilinear transformation), has been used successfully to adapt the spectral characteristics to a target speaker in speech recognition. In this study we exploit the same concept of frequency warping but concentrate explicitly on mapping the first four formant frequencies of 5 long vowels from sourc...

A method to improve the results of image enhancement is proposed. The method is based on pixel grid warping, the main idea is moving pixels in the direction of the nearest image edges. Warping allows to make edges sharper while keeping textured areas almost intact. Experimental applications of the proposed method for image enhancement algorithms show the improvement of image quality.