Professor Ahmet Kondoz

Head of I-Lab

Email:
Phone: Work: 01483 68 9843
Room no: 03 BB 01

Further information

Publications

Journal articles

  • Malekmohamadi H, Fernando WAC, Kondoz AM. (2012) 'Content-based subjective quality prediction in stereoscopic videos with machine learning'. Electronics Letters, 48 (21), pp. 1344-1346.
  • Andrade MT, Dogan S, Carreras A, Barbosa V, Kodikara Arachchi H, Delgado J, Kondoz AM. (2012) 'Advanced Delivery of Sensitive Multimedia Content for Better Serving User Expectations in Virtual Collaboration Applications'. Springer Multimedia Tools and Applications (MTAP), 58 (3), pp. 633-661.
  • Nur G, Kodikara Arachchi H, Dogan S, Kondoz AM. (2012) 'Seamless Video Access for Mobile Devices by Content-Aware Utility-Based Adaptation'. Springer Multimedia Tools and Applications (MTAP),
  • Nur G, Kodikara Arachchi H, Dogan S, Kondoz AM. (2012) 'Advanced Adaptation Techniques for Improved Video Perception'. IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), 22 (2), pp. 225-240.
  • Yuan H, Alić J, Kondoz A. (2012) 'Analysis of user requirements in interactive 3D video systems'. Advances in Human-Computer Interaction, 2012

    Abstract

    The recent development of three dimensional (3D) display technologies has resulted in a proliferation of 3D video production and broadcasting, attracting a lot of research into capture, compression and delivery of stereoscopic content. However, the predominant design practice of interactions with 3D video content has failed to address its differences and possibilities in comparison to the existing 2D video interactions. This paper presents a study of user requirements related to interaction with the stereoscopic 3D video. The study suggests that the change of view, zoom in/out, dynamic video browsing, and textual information are the most relevant interactions with stereoscopic 3D video. In addition, we identified a strong demand for object selection that resulted in a follow-up study of user preferences in 3D selection using virtual-hand and ray-casting metaphors. These results indicate that interaction modality affects users' decision of object selection in terms of chosen location in 3D, while user attitudes do not have significant impact. Furthermore, the ray-casting-based interaction modality using Wiimote can outperform the volume-based interaction modality using mouse and keyboard for object positioning accuracy. © 2012 Haiyue Yuan et al.

  • Sedef Savas S, Göktuǧ Gürler C, Murat Tekalp A, Ekmekcioglu E, Worrall S, Kondoz A. (2012) 'Adaptive streaming of multi-view video over P2P networks'. Signal Processing: Image Communication, 27 (5), pp. 522-531.
  • Oztoprak H, Villette S, Kondoz A. (2012) 'Index assignment-based channel coding'. IET Communications, 6 (2), pp. 172-178.
  • Yuan H, Ćalić J, Kondoz A. (2012) 'How do users select stereoscopic 3D content?'. 3DTV-Conference,
  • Nur G, Arachchi HK, Dogan S, Kondoz AM. (2012) 'Modeling user perception of 3D video based on ambient illumination context for enhanced user centric media access and consumption'. Multimedia Tools and Applications, , pp. 1-27.
  • Carreras A, Rodríguez E, Dogan S, Kodikara Arachchi H, Delgado J, Perramon X, Kondoz A. (2011) 'Architectures and technologies for adapting secured content in governed multimedia applications'. IEEE Multimedia, 18 (4), pp. 48-61.
  • De Silva V, Fernando A, Worrall S, Kodikara H, Kondoz A. (2011) 'Sensitivity Analysis of the Human Visual System for Depth Cues in Stereoscopic 3-D Displays'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON MULTIMEDIA, 13 (3), pp. 498-506.
  • Elfitri I, Gunel B, Kondoz AM. (2011) 'Multichannel audio coding based on analysis by synthesis'. Proceedings of the IEEE, 99 (4), pp. 657-670.
  • Ahmad W, Kondoz AM. (2011) 'Generation of non-repetitive everyday impact sounds for interactive applications'. Proceedings of the 14th International Conference on Digital Audio Effects, DAFx 2011, , pp. 409-416.
  • Shi Z, Fernando WAC, Kondoz A. (2011) 'Adaptive direction search algorithms based on motion correlation for block motion estimation'. IEEE IEEE Transactions on Consumer Electronics, 57 (3), pp. 1354-1361.
  • Nur G, Arachchi HK, Dogan S, Kondoz AM. (2010) 'Ambient illumination as a context for video bit rate adaptation decision taking'. IEEE Transactions on Circuits and Systems for Video Technology, 20 (12), pp. 1887-1891.
  • Yasakethu SLP, De Silva DVSX, Fernando WAC, Kondoz A. (2010) 'Predicting sensation of depth in 3D video'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 46 (12), pp. 837-838.
  • Unver E, Villette S, Kondoz A. (2010) 'Joint quantisation strategies for low bit-rate sinusoidal coding'. INST ENGINEERING TECHNOLOGY-IET IET SIGNAL PROCESSING, 4 (5), pp. 548-559.
  • Badem MB, Fernando WAC, Kondoz AM. (2010) 'Transform domain distributed video coding with spatial correlations'. SPRINGER MULTIMEDIA TOOLS AND APPLICATIONS, 48 (3), pp. 369-379.
  • Carreras A, Delgado J, Rodriguez E, Barbosa V, Andrade MT, Kodikara Arachchi H, Dogan S, Kondoz AM. (2010) 'A Platform for Context-Aware and Digital Rights Management-Enabled Content Adaptation'. IEEE COMPUTER SOC IEEE MULTIMEDIA, 17 (2), pp. 74-89.
  • Dereboylu Z, Worrall S, Cellatoglu A, Kondoz A. (2010) 'Slice loss concealment using bridge pictures in scalable video coding'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 46 (12), pp. 842-U57.
  • Ahmad W, Kondoz AM, Hacihabiboǧluy H. (2010) 'Discretewavelet transform based shift-invariant analysis scheme for transient sound signals'. 13th International Conference on Digital Audio Effects, DAFx 2010 Proceedings,
  • De Silva DVSX, Fernando WAC, Kodikaraarachchi H, Worrall ST, Kondoz AM. (2010) 'Adaptive sharpening of depth maps for 3D-TV'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 46 (23), pp. 1546-1547.
  • Adedoyin S, Fernando WAC, Kondoz AM. (2010) 'Scalable MDC for 3D stereoscopic video using motion vector encoding'. 2010 IEEE International Conference on Multimedia and Expo, ICME 2010, , pp. 1718-1723.
  • Weerakkody WARJ, Fernando WAC, Kondoz AM. (2009) 'Enhanced reconstruction algorithm for unidirectional distributed video coding'. INST ENGINEERING TECHNOLOGY-IET IET IMAGE PROCESSING, 3 (6), pp. 329-334.
  • Mehmood K, Mrak M, Calic J, Kondoz A. (2009) 'Object tracking in surveillance videos using compressed domain features from scalable bit-streams'. ELSEVIER SCIENCE BV SIGNAL PROCESSING-IMAGE COMMUNICATION, 24 (10), pp. 814-824.
  • Yasakethu SLP, Weerakkody WARJ, Fernando WAC, Pereira F, Kondoz AM. (2009) 'An Improved Decoding Algorithm for DVC Over Multipath Error Prone Wireless Channels'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 19 (10), pp. 1543-1548.
  • Ekmekcioglu E, Worrall ST, Kondoz AM. (2009) 'A Temporal Subsampling Approach for Multiview Depth Map Compression'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 19 (8), pp. 1209-1213.
  • Arachchi HK, Perramon X, Dogan S, Kondoz AM. (2009) 'Adaptation-aware encryption of scalable H.264/AVC video for content security'. ELSEVIER SCIENCE BV SIGNAL PROCESSING-IMAGE COMMUNICATION, Xian, PEOPLES R CHINA: 24 (6), pp. 468-483.
  • Yasakethu SLP, Fernando WAC, Kamolrat B, Kondoz A. (2009) 'Analyzing Perceptual Attributes of 3D Video'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T CONSUM ELECTR, 55 (2), pp. 864-872.
  • Kamolrat B, Fernando WAC, Mrak M, Kondoz A. (2009) '3D Motion Estimation for Depth Image Coding in 3D Video Coding'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T CONSUM ELECTR, 55 (2), pp. 824-830.
  • Hewage CTER, Worrall ST, Dogan S, Villette S, Kondoz AM. (2009) 'Quality Evaluation of Color Plus Depth Map-Based Stereoscopic Video'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 3 (2), pp. 304-318.
  • Ekmekcioglu E, Mrak M, Worrall ST, Kondoz AM. (2009) 'Edge adaptive upsampling of depth map videos for enhanced free-viewpoint video quality'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 45 (7), pp. 353-U19.
  • Weerakkody WARJ, Fernando WAC, Badem MB, Kondoz AM. (2009) 'Nonlinear quantisation for pixel domain distributed video coding'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 45 (5), pp. 261-U36.
  • Yasakethu SLP, Fernando WAC, Kondoz A. (2009) 'Evolution strategy based rate controlling for off-line video coding'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 45 (4), pp. 204-U22.
  • Yasakethu SLP, Femando WAC, Kondoz AM. (2009) 'Rate Controlling in Off Line 3D Video Coding Using Evolution Strategy'. IEEE IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 55 (1), pp. 150-157.
  • Badem MB, Weerakkody R, Fernando A, Kondoz AM. (2009) 'Design of a Non-linear Quantizer for Transform Domain DVC'. IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E92A (3), pp. 847-852.
  • Adikari B, Fernando A, Weerakkody R, Kondoz AM. (2009) 'An Iterative Fusion Technique for Dynamic Side Information Refinement in Pixel Domain Distributed Video Coding'. IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E92A (6), pp. 1417-1423.
  • Yasakethu L, Adedoyin S, Fernando A, Kondoz AM. (2009) 'Rate Controlling in H.264/AVC Using Subjective Quality of Video and Evolution Strategy'. IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E92A (3), pp. 808-815.
  • Mrak M, Calic J, Kondoz A. (2009) 'Fast analysis of scalable video for adaptive browsing interfaces'. ACADEMIC PRESS INC ELSEVIER SCIENCE COMPUTER VISION AND IMAGE UNDERSTANDING, 113 (3), pp. 425-434.
  • Karim HA, Sali A, Worrall S, Sadka AH, Kondoz AM. (2009) 'Multiple description video coding for stereoscopic 3D'. IEEE Transactions on Consumer Electronics, 55 (4), pp. 2048-2056.
  • Adedoyin S, Fernando WAC, Karim HA, Hewage CTER, Kondoz AM. (2008) 'Scalable Multiple Description Coding with Side Information Using Motion Interpolation'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T CONSUM ELECTR, 54 (4), pp. 2045-2052.
  • Yasakethu SLP, Fernando WAC, Adedoyin S, Kondoz A. (2008) 'A rate control technique for off line H.264/AVC video coding using subjective quality of video'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T CONSUM ELECTR, 54 (3), pp. 1465-1472.
  • Hewage CTER, Worrall ST, Dogan S, Kondoz AM. (2008) 'Prediction of stereoscopic video quality using objective quality models of 2-D video'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 44 (16), pp. 963-965.
  • Martinez JL, Weerakkody WARJ, Fernando WAC, Quiles F, Kondoz AM. (2008) 'Turbo trellis coded modulation for transform domain distributed video coding'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 44 (15), pp. 899-901.
  • Hacihabiboglu M, Gunel B, Kondoz AM. (2008) 'Time-domain simulation of directive sources in 3-D digital waveguide mesh-based acoustical models'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING, 16 (5), pp. 934-946.
  • Gunel B, Hacihabiboglu H, Kondoz AM. (2008) 'Acoustic source separation of convolutive mixtures based on intensity vector statistics'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING, 16 (4), pp. 748-756.
  • Kamolrat B, Fernando WAC, Mrak M, Kondoz A. (2008) 'Joint source and channel coding for 3D video with depth image - Based rendering'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T CONSUM ELECTR, 54 (2), pp. 887-894.
  • Ekmekcioglu E, Worrall ST, Kondoz AM. (2008) 'Utilisation of downsampling for arbitrary views in multi-view video coding'. INST ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 44 (5), pp. 339-340.
  • Sheng Y, Sadka AH, Kondoz AM. (2008) 'Automatic single view-based 3-D face synthesis for unsupervised multimedia applications'. IEEE Transactions on Circuits and Systems for Video Technology, 18 (7), pp. 961-974.
  • Gunel B, Hacihabiboglu H, Kondoz AM. (2008) 'Blind source separation and directional audio synthesis for binaural auralization of multiple sound sources using microphone array recordings'. Proceedings of Meetings on Acoustics, 4 (1), pp. 060001-060001-7.
  • Kornycky J, Gunel B, Kondoz AM. (2008) 'Comparison of Subjective and Objective Evaluation Methods for Audio Source Separation'. Proceedings of Meetings on Acoustics, 4 (1), pp. 050001-050001-10.
  • Tan A, Kondoz AM. (2008) 'Barriers to virtual collaboration'. Conference on Human Factors in Computing Systems - Proceedings, , pp. 2045-2052.
  • Hacihabiboglu H, Gunel B, Kondoz AM. (2008) 'On the accuracy of first-order numerical derivatives in multidimensional digital waveguide mesh topologies'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE SIGNAL PROCESSING LETTERS, 15, pp. 9-12.
  • Yasakethu SLP, Hewage CTER, Fernando WAC, Kondoz AM. (2008) 'Quality analysis for 3D video using 2D video quality models'. IEEE Transactions on Consumer Electronics, 54 (4), pp. 1969-1976.
  • Karim HA, Hewage CTER, Worrall S, Kondoz AM. (2008) 'Scalable multiple description video coding for stereoscopic 3D'. IEEE Transactions on Consumer Electronics, 54 (2), pp. 745-752.
  • Hacihabiboglu H, Guenel B, Kondoz AM. (2007) 'Analysis of root displacement interpolation method for tunable allpass fractional-delay filters'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE TRANSACTIONS ON SIGNAL PROCESSING, 55 (10), pp. 4896-4906.
  • Gunel B, Hacihabiboglu H, Kondoz AM. (2007) 'Wavelet packet based analysis of sound fields in rooms using coincident microphone arrays'. ELSEVIER SCI LTD APPLIED ACOUSTICS, 68 (7), pp. 778-796.
  • Cooke N, Lee G, Kondoz A. (2007) 'IP protection: Detecting Email based breaches of confidence'. Proceedings - IAS 2007 3rd Internationl Symposium on Information Assurance and Security, , pp. 197-202.

    Abstract

    In this paper we discuss the ease with which email can be used to breach confidence by the propagation of corporate secrets and intelligence, and propose an intelligent filtering system for outgoing emails aimed at preventing disclosures. We report on a number of experiments undertaken with a corpus of over half a million Enron emails and the use of a variety of techniques from the field of Corpus Linguistics for reducing the number of false alarms produced by naïve keyword filtering systems, and discuss the results in detail. We also give due consideration to the danger of missing messages that should have been prevented from propagation. © 2007 IEEE.

  • Eminsoy S, Dogan S, Kondoz AM. (2007) 'Transcoding-based error-resilient video adaptation for 3G wireless networks'. SPRINGER EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING, Article number ARTN 39586
  • Al-Naimi K, Villette S, Kondoz A, Heikkinen AP. (2006) 'Improved line spectral frequency estimation through anti-aliasing filtering'. INSTITUTION ENGINEERING TECHNOLOGY-IET IEE PROCEEDINGS-VISION IMAGE AND SIGNAL PROCESSING, 153 (5), pp. 610-617.
  • Edwards R, Sturt C, Villette S, Kondoz A. (2006) 'Phase-spread voicing analysis in parametric speech coders'. INSTITUTION ENGINEERING TECHNOLOGY-IET ELECTRONICS LETTERS, 42 (11), pp. 665-666.
  • Uzuner H, Villette S, Al-Naimi K, Kondoz A. (2006) 'LSF aliasing removal for improved speaker verification'. IEEE 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, Vols 1-13, Toulouse, FRANCE: , pp. 649-652.

    Abstract

    Applications such as transaction authentication may require speaker recognition systems to operate on compressed speech transmitted over mobile phone networks. However, speech compression degrades speech quality, and hence causes a reduction in recognition performance. It has been shown that the classic technique for extraction of Line Spectral Frequency (LSF) parameters in speech coders is prone to aliasing distortion. The use of a low-pass filtering on upsampled LSF vectors has been shown to alleviate this problem, therefore improving speech quality. In this paper, the effect of this Non-Aliased LSF (NA-LSF) extraction method on speaker recognition performance is observed using GSM-EFR coded speech. When the NA-LSFs are used in the coder the verification performance loss introduced by the GSM-EFR is reduced, producing similar performance to uncoded speech.

  • Orozco E, Villette S, Kondoz AM. (2006) 'Multiple description coding for voice over IP using sinusoidal speech coding'. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 1

    Abstract

    CELP coders, such as G.729, are often used in VoIP systems as they offer good speech quality in the absence of packet losses. However, their reliance on long-term prediction causes propagation of errors across speech frames, and therefore makes CELP coders more sensitive to packet losses. Sinusoidal coders on the other hand do not rely on long-term prediction, and may be a good alternative for VoIP due to their higher resilience to packet losses. In this paper a comparison is made between CELP and sinusoidal coders in a VoIP application, A packetisation scheme based on Multiple Description Coding (MDC) applied to the sinusoidal coder is presented. The results show that under typical VoIP operating conditions, the sinusoidal coder based systems can outperform CELP based systems at equal bit rate, especially for high packet loss rates. © 2006 IEEE.

Conference papers

  • De Silva V, Kodikara Arachchi H, Ekmekcioglu E, Fernando A, Dogan S, Kondoz A, Savas S. (2012) 'Psycho-physical Limits of Interocular Blur Suppression and its Application to Asymmetric Stereoscopic Video Delivery'. IEEE 19th IEEE International Packet Video Workshop, Munich, Germany: PV 2012, pp. 184-189.
  • Ekmekcioglu E, Arachchi HK, Kondoz A, Goktug Gurler C, Sedef Savas S. (2012) 'Content aware delivery of visual attention based scalable multi-view video over P2P'. 2012 19th International Packet Video Workshop, PV 2012, , pp. 71-76.
  • Nur, G , De Silva, v , Kodikara Arachchi, H , Kondoz, A , Fernando, W , Martinez-Rach, M O , Dogan S. (2012) 'Sensitivity of the HVS for Binocular Disparity Cue in 3D Displays under Different Ambient Illumination Conditions'. Las Vegas, NV, USA: 30th IEEE International Conference on Consumer Electronics (ICCE 2012)
  • Yuan H, Ćalić J, Fernando A, Kondoz A. (2012) 'User requirements elicitation of stereoscopic 3D video interaction'. Proceedings of the 2012 IEEE International Conference on Multimedia and Expo Workshops, ICMEW 2012, , pp. 31-36.
  • Shi Z, Fernando WAC, Kondoz AM. (2012) 'A hybrid coded block patterns based fast mode decision in H.264/AVC'. Proceedings of the 2012 IEEE International Conference on Multimedia and Expo Workshops, ICMEW 2012, , pp. 13-18.
  • Shi Z, Fernando WAC, Kondoz A. (2012) 'An efficient fast motion estimation in H.264/AVC by exploiting motion correlation character'. CSAE 2012 - Proceedings, 2012 IEEE International Conference on Computer Science and Automation Engineering, 3, pp. 298-302.
  • Malekmohamadi H, Fernando WAC, Kondoz AM. (2012) 'Automatic QOE prediction in stereoscopic videos'. Proceedings of the 2012 IEEE International Conference on Multimedia and Expo Workshops, ICMEW 2012, , pp. 581-586.
  • Yasakethu SLP, Worrall ST, De Silva DVSX, Fernando WAC, Kondoz AM. (2011) 'A compound depth and image quality metric for measuring the effects of packet loss on 3D video'. IEEE Proceedings of 17th International Conference on Digital Signal Processing, Corfu, Greece: 2011 17th DSP
  • Nur G, Dogan S, Kodikara Arachchi H, Kondoz AM. (2011) 'Extended VQM Model for Predicting 3D Video Quality Considering Ambient Illumination Context'. Antalya, Turkey: 5th IEEE 3DTV Conference (3DTV-CON 2011)
  • De Silva DVSX, Fernando WAC, Worrall ST, Kondoz AM. (2011) 'A novel depth map quality metric and its usage in depth map coding'. Proceedings 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video, Antalya, Turkey: 3DTV-CON 2011
  • De Silva DVSX, Fernando WAC, Kodikaraarachchi H, Worrall ST, Kondoz AM. (2011) 'Improved depth map filtering for 3D-TV systems'. Digest of Technical Papers - IEEE International Conference on Consumer Electronics, , pp. 645-646.
  • Badem M, Fernando WAC, Kondoz AM. (2010) 'Unidirectional distributed video coding using dynamic parity allocation and improved reconstruction'. Proceedings of the 5th International Conference on Information and Automation for Sustainability, Colombo, Sri Lanka: 5th ICIAFs 2010, pp. 335-340.
  • Günel B, Ekmekcioglu E, Kondoz AM. (2010) 'Spatial synchronization of audiovisual objects by 3D audio object coding'. Proceedings of IEEE International Workshop on Multimedia Signal Processing, MMSP2010, Saint Malo, France: IEEE MMSP 2010, pp. 460-465.
  • Nur G, Dogan S, Kodikara Arachchi H, Kondoz AM. (2010) 'Assessing the Effects of Ambient Illumination Change in Usage Environment on 3D Video Perception for User Centric Media Access and Consumption'. 2nd ICST International Conference on User Centric Media (UCMedia 2010), Palma de Mallorca, Spain: 2nd ICST International Conference on User Centric Media (UCMedia 2010)
  • Ekmekcioglu E, Worrall S, De Silva D, Fernando W, Kondoz A. (2010) 'Depth based perceptual quality assessment for synthesised camera viewpoints'. Springer LNICST, Palma de Mallorca, Spain: Second International Conference on User Centric Media, 2010
  • Lopez F, Nur G, Dogan S, Kodikara Arachchi H, Mrak M, Martinez JM, Garcia N, Kondoz A. (2010) 'Improving Scalable Video Adaptation in a Knowledge-Based Framework'. Desenzano Del Garda, Italy: 11th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2010)
  • Günel B, Nikolopoulos G, Hacihabiboǧlu H, Kondoz AM. (2010) 'Performance of closed-form acoustic scene decomposition for forensic analysis'. Proceedings of AES 39th International Conference: Audio Forensics: Practices and Challenges, Hillerød, Denmark: 39th International Conference: Audio Forensics: Practices and Challenges, pp. 117-126.
  • Joveluro P, Malekmohamadi H, Fernando WAC, Kondoz AM. (2010) 'Perceptual Video Quality Metric for 3D video quality assessment'. 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON), 2010, Tampere, Finland: 3DTV-CON, 2010, pp. 1-4.
  • Nur G, Dogan S, Kodikara Arachchi H, Kondoz AM. (2010) 'Impact of Depth Map Spatial Resolution on 3D Video Quality and Depth Perception'. Tampere, Finland: 4th IEEE 3DTV Conference (3DTV-CON 2010)
  • De Silva DVSX, Ekmekcioglu E, Abdul-Hameed O, Fernando WAC, Worrall ST, Kondoz AM. (2010) 'Performance evaluation of 3D-TV transmission over WiMAX broadband access networks'. Proceedings of the 2010 5th International Conference on Information and Automation for Sustainability, ICIAfS 2010, , pp. 298-303.
  • Ekmekcioglu E, De Silva DVSX, Fernando WAC, Worrall ST, Kondoz AM. (2010) 'Utilisation of motion similarity in colour-plus-depth 3D video for improved error resiliency'. Proceedings of the 2010 5th International Conference on Information and Automation for Sustainability, ICIAfS 2010, , pp. 475-478.
  • De Silva DVSX, Fernando WAC, Worrall ST, Yasakethu SLP, Kondoz AM. (2010) 'Just noticeable difference in depth model for stereoscopic 3D displays'. 2010 IEEE International Conference on Multimedia and Expo, ICME 2010, , pp. 1219-1224.
  • Ekmekcioglu E, Günel B, Dissanayake M, Worrall ST, Kondoz AM. (2010) 'A scalable multi-view audiovisual entertainment framework with content-aware distribution'. Proceedings - International Conference on Image Processing, ICIP, , pp. 2401-2404.
  • Unver E, Villette S, Kondoz A. (2009) 'Joint Quantization Strategies for Low Bit-Rate Sinusoidal Coding'. ISCA-INST SPEECH COMMUNICATION ASSOC 10TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION, Brighton, UK: INTERSPEECH 2009, pp. 2571-2574.
  • Nur G, Kodikara Arachchi H, Dogan S, Kondoz AM. (2009) 'A Novel Scalability Adaptation Concept for Higher R-D Performances of Scalable Video'. ICT Mobile and Wireless Communications Summit (ICT-MobileSummit 2009), Santander, Spain: ICT Mobile and Wireless Communications Summit (ICT-MobileSummit 2009)
  • Arvanitidou MG, Glantz A, Krutz A, Sikora T, Mrak M, Kondoz A. (2009) 'Global motion estimation using variable block sizes and its application to object segmentation'. IEEE Proceedings of 10th International Workshop on Image Analysis for Multimedia Interactive Services, London, UK: WIAMIS '09, pp. 173-176.
  • Ahmad W, Hacihabiboǧlu H, Kondoz AM. (2009) 'Morphing of transient sounds based on shift-invariant discrete wavelet transform and singular value decomposition'. Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing, Taipei, Taiwan: ICASSP 2009, pp. 297-300.
  • Badem MB, Fernando A, Weerakkody R, Arachchi HK, Kondoz AM. (2009) 'Transform Domain Unidirectional Distributed Video Coding Using Dynamic Parity Allocation'. IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, Karuizawa, JAPAN: 21st Workshop on Circuits and Systems E92A (4), pp. 1202-1208.
  • Ma Y, Worrall S, Kondoz AM. (2009) 'Depth Assisted Visual Tracking'. IEEE 2009 10TH INTERNATIONAL WORKSHOP ON IMAGE ANALYSIS FOR MULTIMEDIA INTERACTIVE SERVICES, London, ENGLAND: 10th International Workshop on Image Analysis for Multimedia Interactive Services, pp. 157-160.
  • Kornycky J, Günel B, Kondoz A. (2009) 'Robustness comparison of moving convolutive source separation techniques'. Proceedings Elmar - International Symposium Electronics in Marine, , pp. 209-212.
  • Yasakethu SLP, Fernando WAC, Adedoyin S, Kondoz A. (2009) 'A Rate Control Technique for H.264/AVC Using Subjective Quality of 2D/3D Video'. IEEE 2009 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS, Las Vegas, NV: 27th IEEE International Conference on Consumer Electronics, pp. 451-452.
  • Ekmekcioglu E, Mrak M, Worrall S, Kondoz A. (2009) 'Utilisation of edge adaptive upsampling in compression of depth map videos for enhanced free-viewpoint rendering'. Proceedings - International Conference on Image Processing, ICIP, , pp. 733-736.
  • Carreras A, Delgado J, Andrade MT, Barbosa V, Masterton T, Arachchi HK, Dogan S, Kondoz AM. (2009) 'Contextual information in virtual collaboration systems beyond current standards'. 2009 10th International Workshop on Image Analysis for Multimedia Interactive Services, WIAMIS 2009, , pp. 209-213.
  • Nur G, Arachchi HK, Dogan S, Kondoz AM. (2009) 'EVALUATION OF QUALITY SCALABILITY LAYER SELECTION FOR BIT RATE ADAPTATION OF SCALABLE VIDEO CONTENT'. IEEE 2009 10TH INTERNATIONAL WORKSHOP ON IMAGE ANALYSIS FOR MULTIMEDIA INTERACTIVE SERVICES, London, ENGLAND: 10th International Workshop on Image Analysis for Multimedia Interactive Services, pp. 218-221.
  • Nasir S, Hewage CTER, Mrak M, Worrall S, Kondoz AM. (2009) 'Depth based object prioritisation for 3D video communication over wireless LAN'. Proceedings - International Conference on Image Processing, ICIP, , pp. 4269-4272.
  • Guenel B, Hacihabiboglu H, Kondoz AM. (2009) 'INTENSITY VECTOR DIRECTION EXPLOITATION FOR EXHAUSTIVE BLIND SOURCE SEPARATION OF CONVOLUTIVE MIXTURES'. IEEE 2009 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1- 8, PROCEEDINGS, Taipei, TAIWAN: IEEE International Conference on Acoustics, Speech and Signal Processing, pp. 41-44.
  • Hewage CTER, Ahmad Z, Worrall ST, Dogan S, Fernando WAC, Kondoz A. (2009) 'Unequal Error Protection for Backward Compatible 3-D Video Transmission over WiMAX'. IEEE ISCAS: 2009 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-5, Taipei, TAIWAN: IEEE International Symposium on Circuits and Systems (ISCAS 2009), pp. 125-128.
  • Badem MB, Fernando WAC, Weerakkody WARJ, Yasakethu SLP, Kondoz AM. (2008) 'Region-of-Activity Based Coding for Transform Domain DVC'. IEEE 24th International Conference on Information and Automation for Sustainability, Colombo, Sri Lanka: 4th ICIAFS, pp. 154-157.
  • Yasakethu SLP, Fernando WAC, Badem MB, Kondoz AM. (2008) 'Quality Analysis of Side Information Refinement in Transform-Based DVC'. IEEE 4th International Conference on Information and Automation for Sustainability, Colombo, Sri Lanka: 4th ICIAFS, pp. 148-153.
  • Yaici K, Kondoz A. (2008) 'A model-based approach for the generation of adaptive user interfaces on portable devices'. Proceedings of the 2008 IEEE International Symposium on Wireless Communication Systems, Reykjavik, Iceland: ISWCS'08, pp. 164-167.
  • Ma Y, Worrall S, Kondoz AM. (2008) 'Automatic video object segmentation using depth information and an active contour model'. Proceedings of the 2008 IEEE 10th Workshop on Multimedia Signal Processing, Cairns, Australia: MMSP 2008, pp. 910 -914-910 -914.
  • Velisavljevic V, Mrak M, Kondoz A. (2008) 'Application of directionlets in video coding'. Proceedings of 5th International Conference on Visual Information Engineering, Xian, China: 5th VIE 2008 (543), pp. 71-76.
  • Mohammadi-Aragh MJ, Ziegeler S, Martin J, Moorhead RJ. (2008) 'Visualization of time-varying features'. Proceedings of the Department of Defense High Performance Computing Modernization Program, Seattle, USA: Users Group Conference: Solving the Hard Problems, pp. 396-399.
  • Shi X, Lutz T, Giannakidis A, Goulianos A, Watts P, Yaici K, Evans B, Kondoz A, Petrou M, Silva SRP, de Silva S. (2008) 'The Guardian Angel Project: Using an unobtrusive Wireless Sensor Network System to Improve Health and Well-being in the 21st Century'. Montpellier, France: NT08, Ninth International Conference on the Science and Application of Nanotubes
  • Calic J, Mrak M, Kondoz A. (2008) 'Dynamic layout of visual summaries for scalable video'. IEEE Proceedings of International Workshop on Content-Based Multimedia Indexing, London, UK: CBMI 2008, pp. 46-50.

    Abstract

    The paper brings a novel method for generating visual summaries of scalable videos. The generated summaries can dynamically adapt to requirements defined by display size, userpsilas needs or channel limitations. It utilises compressed domain features coupled with efficient contour evolution algorithm in order to generate a scale space of temporal video descriptors. The layout of the visual summary is created using an efficient graph clustering technique and a fast discrete optimisation algorithm, enabling dynamic video summarisation in real-time. The experimental results show good scalability of the dynamic layout and highly efficient generation of visual summaries.

  • Ekmekcioglu E, Worrall ST, Kondoz AM. (2008) 'Bit-rate adaptive downsampling for the coding of multi-view video with depth information'. IEEE Proceedings of 3DTV-CON 2008, Istanbul, Turkey: 2008 3DTV-Conference: The True Vision – Capture, Transmission and Display of 3D Video, pp. 117-120.
  • Kakouros S, Villette S, Kondoz AM. (2008) 'Quantisation for Multiple Description coding for voice over IP'. Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing, Las Vegas, USA: IEEE ICASSP 2008, pp. 4793-4796.
  • Salman M, Worrall S, Kondoz A, Yuan BZ, Ruan QQ, Tang XF. (2008) 'An Efficient Steganographic Algorithm for 3-D Models'. IEEE ICSP: 2008 9TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING, VOLS 1-5, PROCEEDINGS, Beijing, PEOPLES R CHINA: 9th International Conference on Signal Processing, pp. 2739-2742.
  • Ahmad Z, Salman M, Worrall S, Kondoz A. (2008) 'Error robust video communications for wireless networks'. IET Conference Publications, (543 CP), pp. 524-527.
  • Weerakkody WARJ, Fernando WAC, Kondoz AM. (2008) 'An enhanced reconstruction algorithm for unidirectional distributed video coding'. IEEE 2008 IEEE INTERNATIONAL SYMPOSIUM ON CONSUMER ELECTRONICS, VOLS 1 AND 2, Vilamoura, PORTUGAL: IEEE International Symposium on Consumer Electronics, pp. 47-50.
  • Adikari ABB, Fernando WAC, Weerakkody WARJ, Kondoz AM. (2008) 'JOINT SPATIAL AND TEMPORAL CORRELATION EXPLOITATION FOR WYNER-ZIV FRAMES CODING IN DVC'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 589-+.
  • Hewage CTER, Worrall S, Dogan S, Kondoz AM. (2008) 'FRAME CONCEALMENT ALGORITHM FOR STEREOSCOPIC VIDEO USING MOTION VECTOR SHARING'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 485-488.
  • Kamolrat B, Fernando WAC, Mrak M, Kondoz A. (2008) 'FLEXIBLE MOTION MODEL WITH VARIABLE SIZE BLOCKS FOR DEPTH FRAMES CODING IN COLOUR-DEPTH BASED 3D VIDEO CODING'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 573-576.
  • Dissanayake MB, Hewage CTER, Worrall ST, Fernando WAC, Kondoz AM. (2008) 'REDUNDANT MOTION VECTORS FOR IMPROVED ERROR RESILIENCE IN H.264/AVC CODED VIDEO'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 25-28.
  • Nasir S, Worrall S, Mrak M, Kondoz AM. (2008) 'Multi bearer channel resource allocation for optimised transmission of video objects'. Proceedings - International Conference on Image Processing, ICIP, , pp. 3100-3103.
  • Ahmad Z, Worrall S, Kondoz A. (2008) 'UNEQUAL POWER ALLOCATION FOR SCALABLE VIDEO TRANSMISSION OVER WIMAX'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 517-520.
  • Adikari ABB, Fernando WAC, Weerakkody WARJ, Kondoz A, Martinez JL, Cuenca P, AlBegain K, Cuevas A. (2008) 'DVC Based Stereoscopic Video Transmission in a Mobile Communication System'. IEEE COMPUTER SOC NGMAST 2008: SECOND INTERNATIONAL CONFERENCE ON NEXT GENERATION MOBILE APPLICATIONS, SERVICES, AND TECHNOLOGIES, PROCEEDINGS, Cardiff, WALES: 2nd International Conference on Next Generation Mobile Applications, Services and Technologies, pp. 439-443.
  • Nasir S, Worrall S, Mrak M, Kondoz AM. (2008) 'An unequal error protection scheme for object based video communications'. Proceedings of the International Symposium on Consumer Electronics, ISCE,
  • Rodriguez D, Goldmann L, Ongkittikul S, Karaman M, Worrall S, Sikora T, Kondoz A, Grgic M, Grgic S. (2008) 'A System for Personalized Human Computer Interaction'. CROATIAN SOCIETY ELECTRONICS MARINE PROCEEDINGS ELMAR-2008, VOLS 1 AND 2, Zadar, CROATIA: 50th International Symposium ELMAR, pp. 439-442.
  • Arachchi HK, Hewage CTER, Dogan S, Mrak M, Barbosa V, Andrade MT, Kondoz AM, Grgic M, Grgic S. (2008) 'Context-aware adaptation of SVC scalability structure for improved coding efficiency'. CROATIAN SOCIETY ELECTRONICS MARINE PROCEEDINGS ELMAR-2008, VOLS 1 AND 2, Zadar, CROATIA: 50th International Symposium ELMAR, pp. 443-446.
  • Calic J, Mrak M, Kondoz A. (2008) 'FLEXIBLE GENERATION OF VIDEO SUMMARIES FROM LAYERED VIDEO BIT-STREAMS'. IEEE 2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5, San Diego, CA: 15th IEEE International Conference on Image Processing (ICIP 2008), pp. 2516-2519.
  • Ongkittikul S, Worrall S, Kondoz A. (2008) 'Enhanced hand tracking using the k-means embedded particle filter with mean-shift vector re-sampling'. IET Conference Publications, (543 CP), pp. 23-28.
  • Ekmekcioglu E, Worrall ST, Kondoz AM. (2008) 'LOW-DELAY RANDOM VIEW ACCESS IN MULTI-VIEW CODING USING A BIT-RATE ADAPTIVE DOWNSAMPLING APPROACH'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 745-748.
  • Yaici K, Kondoz A. (2008) 'Runtime Middleware for the Generation of Adaptive User Interfaces on Resource-Constrained Devices'. IEEE 2008 THIRD INTERNATIONAL CONFERENCE ON DIGITAL INFORMATION MANAGEMENT, VOLS 1 AND 2, Univ E London, London, ENGLAND: , pp. 599-604.
  • Mrak M, Calic J, Cordara G, Kondoz A. (2008) 'HIERARCHICAL MOTION ANALYSIS FOR FAST SUMMARISATION OF SCALABLE CODED VIDEO'. IEEE 2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4, Hannover, GERMANY: IEEE International Conference on Multimedia and Expo (ICME 2008), pp. 1309-1312.
  • Ongkittikul S, Worrall S, Kondoz A, Snasel V, Abraham A, Saeed K, Pokorny J. (2008) 'Two hand tracking using colour statistical model with the K-means embedded particle filter for hand gesture recognition'. IEEE COMPUTER SOC SEVENTH INTERNATIONAL CONFERENCE ON COMPUTER INFORMATION SYSTEMS AND INDUSTRIAL MANAGEMENT APPLICATIONS, PROCEEDINGS, Ostrava, CZECH REPUBLIC: 7th International Conference on Computer Information Systems and Industrial Management Applications, pp. 201-206.
  • Karim HA, Worrall S, Kondoz AM. (2008) 'Reduced resolution depth compression for scalable 3D video coding'. IET Conference Publications, (543 CP), pp. 765-770.
  • Hewage CTER, Worrall ST, Dogan S, Kondoz AM. (2008) 'A novel frame concealment method for depth maps using corresponding colour motion vectors'. 2008 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video, 3DTV-CON 2008 Proceedings, , pp. 149-152.
  • Salman M, Ahmad Z, Worrall S, Kondoz AM. (2008) 'Robust watermarking of 3-D polygonal models'. 2008 3rd International Symposium on Communications, Control, and Signal Processing, ISCCSP 2008, , pp. 340-343.
  • Günel B, Hacihabiboǧlu H, Kondoz AM. (2007) 'Plane wave decomposition with regularization using a single rotating microphone'. Proceedings of the AES International Conference,
  • Arachchi HK, Dogan S, Uzuner H, Kondoz AM, Delgado J, Ng K, Nesi P, Bellini P. (2007) 'Utilising macroblock SKIP mode information to accelerate cropping of an H.264/AVC encoded video sequence for user centric content adaptation'. IEEE COMPUTER SOC AXMEDIS 2007: THIRD INTERNATIONAL CONFERENCE ON AUTOMATED PRODUCTION OF CROSS MEDIA CONTENT FOR MULTI-CHANNEL DISTRIBUTION, PROCEEDINGS, Barcelona, SPAIN: 3rd International Conference on Automated Production of Cross Media Content for Multi-Channel Distribution, pp. 3-6.
  • Abdul-Hameed O, Nasir S, Karim H, Masterton T, Kondoz AM. (2007) 'Enhancing wireless video transmissions in virtual collaboration environments'. IEEE 2007 PROCEEDINGS OF THE 16TH IST MOBILE AND WIRELESS COMMUNICATIONS, VOLS 1-3, Budapest, HUNGARY: 16th IST Mobile and Wireless Communications, pp. 1484-1488.
  • Hewage CTER, Worrall S, Dogan S, Kodikaraarachchi H, Kondoz AM. (2007) 'Stereoscopic TV over IP'. IET Conference Publications, (534 CP)
  • Hewage CTER, Arachchi HK, Masterton T, Yu AC, Uzuner H, Dogan S, Kondoz AM. (2007) 'Content adaptation for virtual office environment using scalable video coding'. IEEE 2007 PROCEEDINGS OF THE 16TH IST MOBILE AND WIRELESS COMMUNICATIONS, VOLS 1-3, Budapest, HUNGARY: 16th IST Mobile and Wireless Communications, pp. 1479-1483.
  • Hacihabiboǧlu H, Günel B, Kondoz AM. (2007) 'Source directivity simulation in digital waveguide mesh-based room acoustics models'. Proceedings of the AES International Conference,
  • Andrade MT, Delgado J, Rodríguez E, Carreras A, Arachchi HK, Nasir S, Dogan S, Uzuner H, Kondoz AM, Masterton T, Craddock R. (2007) 'Using context to assist the adaptation of protected multimedia content in Virtual Collaboration applications'. Proceedings of the 3rd International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2007, , pp. 233-242.
  • Hacihabiboglu H, Gunel B, Kondoz AM. (2006) 'Interpolated allpass fractional-delay filters using root displacement'. IEEE 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, Vols 1-13, Toulouse, FRANCE: 31st IEEE International Conference on Acoustics, Speech and Signal Processing, pp. 3315-3318.
  • Hacihabiboǧlu H, Günel B, Kondoz AM. (2006) 'Interpolated allpass fractional-delay filters using root displacement'. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3
  • Uzuner H, Villette S, Al-Naimi K, Kondoz A. (2006) 'LSF aliasing removal for improved speaker verification'. IEEE 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing, Vol I, Proceedings, Toulouse, FRANCE: 31st IEEE International Conference on Acoustics, Speech and Signal Processing, pp. 649-652.

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