In this paper we do a systematic investigation of continuous methods for pixel, line pixel and line dejittering. The basis for these investigations are the discrete line dejittering algorithm of Nikolova and the partial differential equation of Lenzen et al for pixel dejittering. To put these two different worlds in perspective we find infinite dimensional optimization algorithms linking to the...

Video stabilization is one of the most important enhancements where jittering caused by un-intentional movements is removed. Existing video stabilizer software and tools cannot differentiate between intentional and un-intentional jitters in the video and treats both equally. In this paper, the authors propose an efficient and practical approach of video stabilization by differentiating between ...

We consider fast algorithms of wavelet decomposition of a function f when discrete observations of f (suppf [0; 1]) are available. The properties of the algorithms are studied for three types of observation design: the regular design, when the observations f(xi) are taken on the regular grid xi = i=N , i = 1; :::; N ; the case of jittered regular grid, when it is only known that for all 1 i N i...

Spectral weighting functions were estimated in a pitch-comparison task to assess the relative influence of individual harmonics on listeners' pitch judgment. The stimuli were quasi-harmonic complex tones composed of the first 12 components, with fundamental frequencies ranging from 100 to 800 Hz. On each stimulus presentation the frequency of each harmonic was randomly jittered by a small amoun...

The compass operator has proven to be a useful tool for the detection of color edges in real images. Its fundamental contribution is the comparison of oriented distributions of image features over a local area at each pixel. This paper presents extensions and modifications to the operator to make it applicable to texture edge detection in high dimensional images whose dimensions represent the o...

The voice changes with normal aging. For instance, older adults may have more extreme values on measures of irregularities in fundamental frequency (jitter) and intensity (shimmer) than the voices of younger adults [1]. Listeners perceive such voices to be rougher [2] and perform more poorly on word recognition when speech has been synthetically jittered [3]. Given that some older adults have v...

Pixel-trace filtering is an efficient anti-aliasing technique for sequence animation because its computation cost is constant regardless of scene complexity. Although it works well in simple cases, it has shortcomings with steady objects, moving shadows, reflective/refractive objects, and deforming objects. This paper significantly improves pixel-trace filtering and eliminates all these restric...