Browsing University of Hertfordshire by Author "Ariyaeeinia, A."

Now showing items 1-20 of 28

    • Analysis and Design of Stereoscopic Television Systems 

      Ariyaeeinia, A. (1998)
      The performance of stereoscopic television systems and its dependence on various parameters are investigated. It is shown that the extent of the region of space which can be displayed in three dimensions without causing ...

    • Automatic Number Plate Recognition System on an ARM-DSP and FPGA Heterogeneous SoC Platforms 

      Jeffrey, Zoe; Zhai, Xiaojun; Bensaali, Faycal; Sotudeh, Reza; Ariyaeeinia, A. (2013-08-27)

    • Comparison of VQ and DTW classifiers for speaker verification 

      Ariyaeeinia, A.; Sivakumaran, P. (Institute of Electrical and Electronics Engineers (IEEE), 1997)
      An investigation into the relative speaker verification performance of various types of vector quantisation (VQ) and dynamic time warping (DTW) classifiers is presented. The study covers a number of algorithmic issues ...

    • Data transmission in biometrics over the internet 

      Siau, J.; Ariyaeeinia, A. (European Communities, 2002)
      Reducing the bandwidth consumption on the network traffic has been a major concern over the past many years. With the advent of biometrics over the Internet, this issue will become more apparent as the performance of such ...

    • Distinguishable de-identified faces 

      Sun, Zongji; Meng, Li; Ariyaeeinia, A. (Institute of Electrical and Electronics Engineers (IEEE), 2015-05)
      The k-anonymity approach adopted by k-Same face de-identification methods enables these methods to serve their purpose of privacy protection. However, it also forces every k original faces to share the same de-identified ...

    • Effective speaker verification via dynamic mismatch compensation 

      Pillay, Surosh; Ariyaeeinia, A.; Sivakumaran, P.; Pawlewski, M. (2012-06)
      This paper presents a new approach to Condition-adjusted T-Norm (CT-Norm) for speaker verification under significant mismatched noise conditions. The study is motivated by the fact that, whilst the standard CT-Norm method ...

    • Effectiveness in Open-Set Speaker Identification 

      Karadaghi, Rawande; Hertlein, Heinz; Ariyaeeinia, A. (2014-10)
      This paper presents investigations into the relative effectiveness of two alternative approaches to open-set text-independent speaker identification (OSTI-SI). The methods considered are the recently introduced i-vector ...

    • Effectiveness of orthogonal instantaneous and transitional feature parameters for speaker verification 

      Ariyaeeinia, A.; Sivakumaran, P. (Institute of Electrical and Electronics Engineers (IEEE), 1995)
      The effectiveness, for text-dependent speaker verification, of orthogonal instantaneous and transitional feature parameters of speech is investigated. Instantaneous spectral features are represented by cepstral coefficients ...

    • Effectiveness of speaker-dependent feature score pruning in speaker verification 

      Pillay, S.G.; Ariyaeeinia, A.; Pawlewski, M. (Institute of Electrical and Electronics Engineers (IEEE), 2008)

    • Efficient speaker change detection using adapted Gaussian mixture models 

      Malegaonkar, A.; Ariyaeeinia, A.; Sivakumaran, P. (2007)
      A new approach to speaker change detection is proposed and investigated. The method, which is based on a probabilistic framework, provides an effective means for tackling the problem posed by phonetic variation in ...

    • Enhancement of multimodal biometric segregation using unconstrained cohort normalisation 

      Alsaade, F.; Ariyaeeinia, A.; Malegaonkar, A.; Pawlewski, M.; Pillay, S.G. (2008)
      This paper presents an investigation into the effects, on the accuracy of multimodal biometrics, of introducing unconstrained cohort normalisation (UCN) into the score-level fusion process. Whilst score normalisation has ...

    • Fusion of cross stream information in speaker verification 

      Alsaade, F.; Malegaonkar, A.; Ariyaeeinia, A. (Office for Official Publications of the European Communities, 2005)
      This paper addresses the performance of various statistical data fusion techniques for combining the complementary score information in speaker verification. The complementary verification scores are based on the static ...

    • On the enhancement of speaker identification accuracy using weighted bilateral scoring 

      Malegaonkar, A.; Ariyaeeinia, A.; Sivakumaran, P.; Fortuna, J. (2008-10-16)
      This paper presents investigations into an effective bilateral scoring method in open-set speaker identification. The approach is based on the fact that two different speakers usually are not reciprocal. A difficulty in ...

    • On the use of decoupled and adapted Gaussian mixture models for open-set speaker identification 

      Fortuna, J.; Malegaonkar, A.; Ariyaeeinia, A.; Sivakumaran, P. (Office for Official Publications of the European Communities, 2005)
      This paper presents a comparative analysis of the performance of decoupled and adapted Gaussian mixture models (GMMs) for open-set, text-independent speaker identification (OSTISI). The analysis is based on a set of ...

    • Open-Set Speaker Identification under Mismatch Conditions 

      Pillay, S.G.; Ariyaeeinia, A.; Sivakumaran, P.; Pawlewski, M. (2009)
      This paper presents investigations into the performance of open-set, text-independent speaker identification (OSTI-SI) under mismatched data conditions. The scope of the study includes attempts to reduce the adverse effects ...

    • Open-Set Speaker Identification under Mismatch Conditions 

      Pillay, S.G.; Ariyaeeinia, A.; Sivakumaran, P.; Pawlewski, M. (ISCA-INST SPEECH COMMUNICATION ASSOC, 2009)
      This paper presents investigations into the performance of open-set, text-independent speaker identification (OSTI-SI) under mismatched data conditions. The scope of the study includes attempts to reduce the adverse effects ...

    • Performance evaluation in open-set speaker identification 

      Malegaonkar, A.; Ariyaeeinia, A. (Springer Nature, 2011-03-10)
      The concern in this study is the approach to evaluating the performance of the open-set speaker identification process. In essence, such a process involves first identifying the speaker model in the database that best ...

    • Pre-processing speech signals in FPGAs 

      Xu, J.; Ariyaeeinia, A.; Sotudeh, R.; Ahmad, Z. (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Algorithms are traditionally developed on off-the-shelf digital signal processors. Recent silicon technology advance has made FPGAs feasible as an alternative solution. However, most of signal processing work in the past ...

    • A Proposal for structured activities in biometric identity authentication 

      Dorizzi, B.; Ariyaeeinia, A. (European Communities, 2002)
      This paper details an expression of interest (EoI) in the area of “biometric identity authentication”. This EoI was submitted in response to an invitation made by the EC as part of its preparation of the Sixth Framework ...

    • Qualitative fusion of normalised scores in multimodal biometrics 

      Alsaade, F.; Ariyaeeinia, A.; Malegaonkar, A.; Pillay, S.G. (2009)
      A new approach to enhancing the accuracy of multimodal biometrics is investigated. The proposed approach, which involves combining score normalisation and qualitative-based fusion, is shown to considerably improve the ...