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In this paper an approach to adjustment and reduction of the number of parameters controlling simple 2D to 3D image conversion schemes is presented. With the reported experiments five 2D to 3D conversion methods were examined and compared. The controlling parameters were experimentally adjusted by the viewers. The results of experiments indicate a linear dependence between the parameters. Thus it...
The paper presents a comparison of speaker models used for fast speaker identification in short recordings of telephone conversations. The knowledge of the encoder type used during the transmission of speech allows to apply a model that takes specific characteristics of the encoder into account. This improves efficiency of the speaker recognition process. The influence of the following GSM encoders...
In this paper an analysis and implementation of the new algorithm for detecting and counting people in video surveillance systems is presented. First, we recapitulate methods used in the commercial systems, which can be used for people counting. Next, we concentrate on our new Matlab/Simulink model for detecting people, who are passing under a camera positioned vertically down at the entrance to a...
In the paper the results of investigations indicating computational efficiency of Discrete Trigonometric Transforms (DTTs) used to design filters by means of the complete wavelet-like decomposition/reconstruction procedure, are presented. The study indicates flexibility when comparing DTT selection from the set of 16 transforms, and the sampling type used. The results, obtained for the block length...
A problem of design of a system for real-time voice watermarking using a digital signal processor (DSP) is studied and presented in this paper. The authors prepared and compared three versions of the considered system using different types of data formats (fixed-point and floating-point) and various ways of programming (Matlab/Simulik compiler for Code Composer Studio and plain C/C++ programming).
This paper presents analysis of impact of the image resolution on the efficacy of the automatic face recognition. During experimental studies three databases were tested, where the head in the photos is set at different angles. The effectiveness of face location detection was examined with the use of the skin color and geometric models. Next, we tested the influence of the head position and the image...
This paper deals with the problem of processing of I-vectors in the text-independent speaker verification systems. A new generalized cosine similarity optimization technique is proposed. The optimization is performed over sets of orthogonal and diagonal matrices. Lie group techniques are used in order to obtain exact orthogonal matrix solution. The experiments have been performed using the NIST 2010...
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