Stewart Worrall.Homepage1.0

Lecturer in video communications at CCSR, University of Surrey
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Publications

The following is a list of publications where I am a named author.





Journal.Papers

Quality Evaluation of Colour plus Depth Map Based Stereoscopic Video
C.T.E.R. Hewage, S. Worrall, S. Dogan, A. M. Kondoz
IEEE Journal of Selected Topics in Signal Processing: Visual Media Quality Assessment, April 2009.

Prediction of stereoscopic video quality using objective quality models of 2-D video
C.T.E.R. Hewage, S. Worrall, S. Dogan, A. M. Kondoz
IET Electronics Letters, Vol. 44, July 31 2008, pp. 963-965. Download PDF document

Scalable Multiple Description Video Coding for Stereoscopic 3D
H. Abdul Karim, C.T.E.R. Thushara, S.T. Worrall, A.M. Kondoz
IEEE Trans. Consumer Electronics, Vol. 54, No. 2, May 2008, pp. 745-752. Download PDF document

Utilisation of downsampling for arbitrary views in multi-view video coding
E. Ekmekcioglu, S.T. Worrall, A.M. Kondoz
IET Electronics Letters, 28 February 2008, Volume 44, Issue 5, p. 339-340. Download PDF document

Optimal settings of Maximum Transfer Unit (MTU) for efficient wireless video communications
C. Kodikara, S.T. Worrall, A.M. Kondoz
IEE Proceedings: Communications, v 152, n 5, October, 2005, pp. 648-654. Download PDF document

Automatic scalable face model design for 2-D model-based video coding
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
Elsevier Signal processing: Image communication (19) 2004, pp. 421-436. Download PDF document

Model design for scalable two-dimensional model-based video coding
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
Electronics Letters vol. 38, no. 24, 21st November, 2002, p. 1513-1515 Download PDF document

Optimal packetisation of MPEG-4 using RTP over mobile networks
S.T. Worrall, A.H. Sadka, P. Sweeney, A.M. Kondoz
IEE Proceedings - Communications, Vol. 148, No. 4, August 2001, pp. 197-201. Download PDF document

Prioritisation of Data Partitioned MPEG-4 over Mobile Networks
S.T. Worrall, S. Fabri, A.H. Sadka, A.M. Kondoz
ETT - European Transactions on Telecommunications, Vol. 12, No. 3, May/June 2001. Download PDF document

Motion Adaptive Intra Refresh for MPEG-4
S.T. Worrall, A.H. Sadka, P. Sweeney, A.M. Kondoz
IEE Electronics Letters, 9th November 2000, Vol. 36, No. 23, pp. 1924-1925. Download PDF document

Backward Compatible Insertion of User Defined Data into MPEG-4
S.T. Worrall, A.H. Sadka, P. Sweeney, A.M. Kondoz
IEE Electronics Letters, 8th June 2000, Vol. 36, No. 12, pp. 1036. Download PDF document

Conference.Papers

Error Robust Video Communications for Wireless Networks
Z. Ahmad, S. Worrall, A. M. Kondoz
IET VIE 2008, 5th Int. Conf. Visual Info. Eng., 29 July-1 August 2008, Xi'an, China.

Reduced Resolution Depth Compression for Scalable 3D Video Coding
H. Abdul Karim, S. Worrall, A. M. Kondoz
IET VIE 2008, 5th Int. Conf. Visual Info. Eng., 29 July-1 August 2008, Xi'an, China.

Multi Bearer Channel Resource Allocation For Optimised Transmission Of Video Objects
S. Nasir, M. Mrak, S. Worrall, A. M. Kondoz
ICIP 2008, Int. Conf. Image Proc., 12-15 October 2008, San Diego, California.

Redundant Motion Vectors For Improved Error Resilience In H.264/AVC Coded Video
M. B. Dissanayake, C.T.E.R. Thushara, S. Worrall, A. M. Kondoz
ICME 2008, Int. Conf. Multimedia and Expo, 23-26 June 2008, Hannover, Germany.

Frame Concealment Algorithm For Stereoscopic Video Using Motion Vector Sharing
C.T.E.R. Thushara, S. Worrall, S. Dogan, A. M. Kondoz
ICME 2008, Int. Conf. Multimedia and Expo, 23-26 June 2008, Hannover, Germany.

Unequal Power Allocation for Scalable Video Transmission Over WiMAX
Z. Ahmad, S. Worrall, A. M. Kondoz
ICME 2008, Int. Conf. Multimedia and Expo, 23-26 June 2008, Hannover, Germany.

Low-Delay Random View Access In Multi-View Coding Using A Bit-Rate Adaptive Downsampling Approach
E. Ekmekcioglu, S. Worrall, A. M. Kondoz
ICME 2008, Int. Conf. Multimedia and Expo, 23-26 June 2008, Hannover, Germany.

Bit-Rate Adaptive Downsampling For The Coding Of Multi-View Video With Depth Information
E. Ekmekcioglu, S. Worrall, A. M. Kondoz
3DTV-Conference 2008, The True Vision Capture, Transmission And Display Of 3D Video, 28-30 May 2008, Hotel Dedeman, Istanbul, Turkey.

A Novel Frame Concealment Method For Depth Maps Using Corresponding Colour Motion Vectors
C.T.E.R. Thushara, S. Worrall, S. Dogan, A. M. Kondoz
3DTV-Conference 2008, The True Vision Capture, Transmission And Display Of 3D Video, 28-30 May 2008, Hotel Dedeman, Istanbul, Turkey.

An unequal error protection scheme for object based video communications
S. Nasir, M. Mrak, S. Worrall, A. M. Kondoz
ISCE 2008, Int. Sym. Consumer Elec., 14-16 April 2008, Algarve, Portugal.

Multi-View Video Coding Via Virtual View Generation
E. Ekmekcioglu, S. Worrall, A. M. Kondoz
Picture Coding Symposium (PCS 2007), November 7-9 2007, Lisbon, Portugal. Download PDF document

Transform Domain Residual Coding Technique For Distributed Video Coding
M.B. Badem H. Kodikaraarachchi, S. Worrall, A. M. Kondoz
Picture Coding Symposium (PCS 2007), November 7-9 2007, Lisbon, Portugal. Download PDF document

Scalable Multiple Description 3D Video Coding Based On Even And Odd Frame
H.A. Karim, C.T.E.R. Thushara, A.C. Yu, S. Worrall, S. Dogan, A. M. Kondoz
Picture Coding Symposium (PCS 2007), November 7-9 2007, Lisbon, Portugal. Download PDF document

A Redundant Frame Strategy Towards Error Robustness For The H.264-Based Scalable Video Coding Systems
A.C. Yu, C.T.E.R. Thushara, S. Worrall, H.A. Karim, S. Dogan, A. M. Kondoz
Picture Coding Symposium (PCS 2007), November 7-9 2007, Lisbon, Portugal. Download PDF document

Stereoscopic TV Over IP
C.T.E.R. Thushara, S. Worrall, S. Dogan, H. Kodikaraarachchi, A. M. Kondoz
4th European Conference on Visual Media Production (CVMP 2007), 27-28 November 2007, Savoy Place, London. Download PDF document

Error-Resilient Transmission of H.264 SVC Streams Over DVB-T/H and WiMAX Channels with Multiple Description Coding Techniques
P. Schelkens, A. Gavrilescu, A. Munteanu, Yves D'Hondt, K. Vermeirsch, R. Van de Walle, O. Guye, Stewart Worrall, A. Navarro
15th European Signal Processing Conference (EUSIPCO 2007), September 3-7, 2007, Poznań, Poland Download PDF document

Hybrid WIMAX and DVB-H Emulator for Scalable Multiple Descriptions Video Coding Testing
C.H. Liew, S. Worrall, M. A. Mota, A. Navarro
International Symposium on Consumer Electronics (ISCE 2007), June 20-23, 2007, Dallas, Texas, USA. Download PDF document

Comparison of Stereo Video Coding Support in MPEG-4 MAC, H.264/AVC and H.264/SVC
C.T.E.R. Thushara, S. Worrall, S. Dogan, A. M. Kondoz
4th International Conference on Visual Information Engineering (VIE 2007) Download PDF document

3D Point Segmentation Using Critical Points and Fuzzy Clustering
Y. Ma, S. Worrall, A. M. Kondoz
4th International Conference on Visual Information Engineering (VIE 2007) Download PDF document

Header Compression based error Resilience for Wireless Communication
Z. Ahmad, S. Worrall, A. M. Kondoz
4th International Conference on Visual Information Engineering (VIE 2007) Download PDF document

H.264 Header Compression Scheme for Wireless Communication
Z. Ahmad, S. Worrall, A. M. Kondoz
4th International Conference on Visual Information Engineering (VIE 2007) Download PDF document

An Unequal Power Allocation Scheme for 3D Model Transmission
P.O. Ilodibia, Z. Ahmad, S. Worrall, A. M. Kondoz
4th International Conference on Visual Information Engineering (VIE 2007)

Product Code Framework For 3D Model Transmission Over WCDMA Networks
P.O. Ilodibia, S. Worrall, A. M. Kondoz
3rd International Conference on Visual Information Engineering (VIE 2006) Download PDF document

Multiple description video coding using frame interpolation
H.A. Karim, C. Kodikara, S.T. Worrall, A.H. Sadka, A.M. Kondoz
Polish National Conference on Radiocommunications and Broadcasting, 2005, Warsaw, Poland.

Scalable shape coding of video objects using temporal prediction
M. Hu, A.H. Sadka, S.T. Worrall, A.M. Kondoz
ICME 2005, July 6-8, 2005, Amsterdam, The Netherlands, July 2005. Download PDF document

A novel compression scheme for MPEG-4 headers over 3G wireless systems
Z. Ahmad, S.T. Worrall, A.H. Sadka, A.M. Kondoz
Proceedings of the IEE International Conference on Visual Information Engineering (VIE 2005): Convergence in Graphics and Vision, University of Glasgow, Glasgow, UK, 4-6 April 2005, pp. 309-314. Download PDF document

3-D video compression using MPEG4-multiple auxiliary component (MPEG4-MAC)
H.A. Karim, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE 2nd International Conference on Visual Information Engineering (VIE'2005), Convergence in Graphics and Vision, April 2005.

QoS Mapping for Video Services in Heterogeneous Networks
C. Kodikara, J. Wang, S.T. Worrall, A.H. Sadka, A.M. Kondoz
6th International Workshop on Image Analysis for Multimedia Interactive Services, WIAMIS 2005, Montreux, Switzerland, April 13-15, 2005. Download PDF document

Highly scalable 2D model-based video coding scheme using warping motion compensated temporal filtering
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS-2005), April 2005. Download PDF document

Performance Enhancement of Real-Time Video Communications over UTRAN by Adaptive Resource Allocation: System Level Evaluation
C. Kodikara, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE Fifth International Conference on 3G Mobile Communication Technologies (3G 2004),IEE Conference Publication No. 503, London, UK, 18-20 October 2004, pp. 427-431. Download PDF document

A novel packetization scheme for MPEG-4 over 3G wireless systems
Z. Ahmad, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE Fifth Conference on 3G Mobile Communication Technologies (3G 2004), IEE Conference Publication No. 494, London, UK, 18-20 October 2004, pp. 302-306. Download PDF document

DCT-domain downscaling for transcoding MPEG-2 video
S. Dogan, S.T. Worrall, A.H. Sadka, A.M. Kondoz
International Conference on Computer Vision and Graphics (ICCVG'2004), Warsaw, Poland, September 2004.

A Scalable Vertex-based Shape Intra-coding Scheme for Video Objects
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
ICASSP, Montreal, Canada, May 2004. Download PDF document

Link Adaptation for Streaming Video in EGPRS Mobile Networks
C. Kodikara, S.T. Worrall, A.M. Kondoz, S.N. Fabri
IEEE VTC-Spring 2004, 17-19 May 2004, Milan, Italy. Download PDF document

Energy Efficient Video Telephony over UMTS
C. Kodikara, S.T. Worrall, A.M. Kondoz
IEEE VTC-Spring 2004, 17-19 May 2004, Milan, Italy. Download PDF document

Combined adaptive spreading gain control and unequal error protection for real-time video communications over WCDMA system
C. Kodikara, S.T. Worrall, A.M. Kondoz, A.H. Sadka
5th Int. Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS'2004), Lisbon, Portugal, 21-23 April 2004.

Face feature detection and model design for 2-D scalable model-based video coding
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE Visual Information Engineering (VIE) 2003, 7 July 2003, Guildford, UK. Download PDF document

A Fast and Efficient Chin Detection Method for 2-D Scalable Face Model Design
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE Visual Information Engineering (VIE) 2003, 7 July 2003, Guildford, UK. Download PDF document

3-D facial animation for very low bit-rate mobile video
S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE 3rd Int. Conf. 3G Mobile Comm. Techn. (3G 2002), London, UK, 8-10 May 2002, pp. 371-375. Download PDF document

A Scalable and low bit-rate video codec based on two-dimensional meshmotion compensation
M. Hu, S.T. Worrall, A.H. Sadka, A.M. Kondoz
Workshop on visual media standards for today and tomorrow, 25 April 2002, Savoy Place, London, UK. Download PDF document

Motion Adaptive Error Resilient Encoding for MPEG-4
S.T. Worrall, A.H. Sadka, P. Sweeney, A.M. Kondoz
IEEE ICASSP 2001, Salt Lake City, USA, May 2001, Vol. 3, pp. 1389-1392. Download PDF document

Robust Header Compression for Real-time Services in Cellular Networks
A. Cellatoglu, S. Fabri, S. Worrall, A.H. Sadka, A.M. Kondoz
IEE 3G 2001, London, UK, March 2001, pp. 124-128. Download PDF document

Video Communications over Mobile Networks
S.N. Fabri, S.T. Worrall, A.M. Kondoz
Communicate 2000, Online Conference, London, 2-13 October, 2000. Download PDF document

Performance of RTP/UDP/IP header compression in cellular networks
A. Cellatoglu, S.T. Worrall, S.N. Fabri, A.M. Kondoz, A.H. Sadka
London Communications Symposium, University College London, 14-15 September, 2000. Download PDF document

Prioritisation of Data Partitioned MPEG-4 over Mobile Networks
S.T. Worrall, S. Fabri, A.H. Sadka, A.M. Kondoz
IEEE Packet Video 2000, Sardinia, May 1-2, 2000. Download PDF document

Real-time Video Communications over GPRS
S. Fabri, S.T. Worrall, A.H. Sadka, A.M. Kondoz
IEE 3G2000, London, March 2000, pp. 426-430. Download PDF document

Use of Prioritised Object-Oriented Video Coding for the Provision of Multiparty Video Communications in Error-Prone Environments
A. Cellatoglu, S. Fabri, S.T. Worrall, A.M. Kondoz
IEEE VTC-Fall, Amsterdam, 1999, pp. 401-405. Download PDF document