Establishing correspondence between features of a set of images has been a long-standing issue amongst the computer vision community. We propose a method that solves the multi-frame correspondence problem by imposing a rank constraint on the observed scene, i.e. rigidity is assumed. Since our algorithm is based solely on a geometrical (global) criterion, it does not suffer from issues usually a...

The multi-frame super resolution (SR) problem is to generate high resolution (HR) images by referring to a sequence of low resolution (LR) images. However, traditional multi-frame SR methods fail to take full advantage of the redundancy in LR images. In this paper, we present a novel algorithm using a refined example-based SR framework to cope with this problem. The refined framework includes t...

May 1997. MULTI-STREAM APPROACH IN ACOUSTIC MODELING Sangita Tibrewala1 and Hynek Hermansky1;2 1Oregon Graduate Institute of Science and Technology, Portland, Oregon, USA. 2International Computer Science Institute, Berkeley, California, USA. Email: sangita,[email protected] ABSTRACT In this paper we present the general framework of the multi-stream approach for automatic speech recognition (ASR)...

i-vectors have been successfully applied over the last years in speaker recognition tasks. This work aims at assessing the suitability of i-vector modeling within the frame of speaker diarization task. In such context, a weighted cosine-distance between two different sets of i-vectors is proposed for speaker clustering. Speech clusters generated by Viterbi segmentation are first modeled by two ...

This paper uses the L1−norm and the concept of the non-dominated vector, topropose a method to find a well-dispersed subset of non-dominated (WDSND) vectorsof a multi-objective mixed integer linear programming (MOMILP) problem.The proposed method generalizes the proposed approach by Tohidi and Razavyan[Tohidi G., S. Razavyan (2014), determining a well-dispersed subset of non-dominatedvectors of...

We investigate vector-valued Gabor frames (sometimes called Gabor superframes) based on Hermite functions Hn. Let h = (H0, H1, . . . , Hn) be the vector of the first n+ 1 Hermite functions. We give a complete characterization of all lattices Λ ⊆ R such that the Gabor system {e2πiλ2th(t − λ1) : λ = (λ1, λ2) ∈ Λ} is a frame for L(R,C). As a corollary we obtain sufficient conditions for a single H...

In [1], Savage described a unified mathematical framework for strapdown inertial navigation algorithm design. The commenting note [2] showed that the " velocity translation vector " (VTV) in the Savage's framework is equivalent to the dual part of an appropriate screw vector in the dual quaternion representation [3] and significantly simplified the VTV rate equation by way of the screw vector r...

Title of dissertation: FRAME MULTIPLICATION THEORY FOR VECTOR-VALUED HARMONIC ANALYSIS Travis D. Andrews, Doctor of Philosophy, 2014 Dissertation directed by: Professor John J. Benedetto Department of Mathematics A tight frame Φ is a sequence in a separable Hilbert space H satisfying the frame inequality with equal upper and lower bounds and possessing a simple reconstruction formula. We define...

In the context of orthogonal frequency division multiplexing (OFDM), most papers define OFDM symbol synchronization as frame synchronization. In this paper, a frame is defined as a block of several OFDM symbols in the time dimension. The main contribution of this work is to propose a novel, lowcomplexity, frame synchronization method for multi-carrier systems that does not require any transmiss...

Defining the electric and magnetic field vectors in curved spacetime requires a proper choice of observer's frame four-vector. Related literature shows that this fundamental issue physics still needs to be properly resolved. In recent on using electromagnetic means detect gravitational waves, an ad hoc definition based regarding $F_{ab}$ with two covariant indices as special relativistic one is...