Visual information of videos is based on spatial and temporal extents. However, most of video indexing techniques work in the spatial extent. Thus, spatial features are extracted from individual frames and then temporal information is introduced by their temporal evolution or tracking in order to construct motion vectors that serve as temporal features. In this paper we present a novel approach...

The “shape” of the desired frequency passband is an important consideration in the design of nonseparable multidimensional ( -D) filters in -D multirate systems. For -D th-band filters, the passband shape should be chosen such that the th-band constraint is satisfied. The most commonly used shape of the passband for -D th-band low-pass filters is the so-called symmetric parallelepiped (SPD) . I...

A novel topological and computational method for ‘motion’ is described. Motion is constrained by inequalities in terms of Kolmogorov Complexity. Causality is obtained as the output of a high-pass filter, passing through only high values of Kolmogorov Complexity. Motion under the electromagnetic field described with immediate relationship with G2 Holonomy group and its corresponding dense free 2...

In this paper, a technique for temporal embedding of a multibit watermark on an audio signal is proposed. The method is based on generating a chaotic sequence which is used for modifying the audio samples. A chaotic sequence generates the watermark, while the parameters of the embedding procedure are chosen so as to minimize the perceivable distortion of the initial signal, while preserving the...

We tested the hypothesis that, given the consistency of tonesyllable alignment found in recent research, accuracy of tone perception is dependent on the accuracy of syllable perception. In two experiments, subjects either judged the number of syllables or identified the tones in nonsense sentences that were spectrally intact, low-pass filtered at 300 Hz or converted to sustained schwa carrying ...

In this paper, we propose the parameterization of all robust stabilizing simple multi-period repetitive controllers with the specified input-output characteristic. Recently, Yamada et al. proposed the parameterization of all robust stabilizing simple multi-period repetitive controllers for the plant with uncertainty such that the controller works as a robust stabilizing multi-period repetitive ...

In this paper, a supra-threshold spatio-velocity CSF experiment is described. It consists in a contrast matching task with a methods of limits procedure. Results enable the determination of contrast perception functions which give, for given spatial and temporal frequencies, the perceived contrast of a moving stimulus. These contrast perception functions are then used to construct supra-thresho...

This paper presents semicircular microstrip low pass filter with the sharp rejection and wide stop band. The proposed filter design is based on the calculations of filter parameters from traditional Hi-Lo impedance method and is available in the literature of microstrip filter. To further improve the design performance, high impedance lines are magnetically coupled, resulting an attenuation pol...