Codec Quality Assessment and Benchmarking
An important aspect of image coding is assessment
of the quality or fidelity of the reproduced image or video. This
project is researching techniques that can be used to benchmark
the quality of a codec by applying it to specially designed test
images. This allows objective quality metrics to be used to
characterise the performance of codecs, and their tendency to produce
particular artefacts.
Participating Staff
- Amal Punchihewa (Project Leader)
- Donald Bailey
- Bob Hodgson
Visiting professor
- Peter Kwon, Korea (2010-2011)
Students
- Ann De Silva (ME: 2011-2012) "Exploring the Implemenation of JPEG Compression of FPGA"
- Jawad Hussain (PhD: 2009 - )
- Alexander Keerl (ME: 2009-2010)
- Ann Malsha de Silva (UG: 2008-2010)
Publications
- A.M. De Silva, D.G. Bailey, and A. Punchihewa, "Exploring the implementation of JPEG compression on FPGA", in 6th International Conference on Signal Processing and Communication Systems, Gold Coast, Australia, (12-14 December, 2012).
- Kwon, S.K., Kim, S.W., Lee, J., Punchihewa, A. and Bailey, D. (2012) "Adaptive simplification of prediction modes for H.264 intra-picture coding", IEEE Transactions on Broadcasting, vol. 58, no. 1, pp. 125-129 [doi:10.1109/TBC.2011.2174894].
- S.K. Kwon, A. Punchihewa, and D.G. Bailey, "Simplification of intra prediction mode", International Journal of Computer Science and Network Security, 11:(8) 102-106 (2011).
- A. Punchihewa, D. Bailey, and A. Keerl, "Validation of compression distortion metrics for blockiness, blur and colour bleeding", in Fourth International Workshop on Image Media Quality and its Applications (IMQA2010), Tokyo, Japan, 68-73 (13-14 May, 2010).
- A. Punchihewa, Synthetic test patterns and compression artefact distortion metrics for image codecs. School of Engineering and Advanced Technology. PhD Thesis. Palmerston North: Massey University. (2009).
- A. Punchihewa, A. M. De Silva, " Influence of luminance on colour bleeding artefacts in colour image compression ", European Signal Processing Conference, Glasgow, Scotland, pp. 1607-1611 (2009)
- A. Punchihewa, J Armstrong, " Objective evaluation of components colour distortions due to image compression", Image and Media Quality Assessment, Kyoto, Japan, pp. 1-6 (2008)
- A. Punchihewa, " Objective evaluation of colour bleeding artefact due to image codecs", Proceedings of the 2008 IET Visual Information Engineering Conference, Xian, China, pp. 801-806 (2008)
- G.A.D. Punchihewa, J. Armstrong, "Encoder Artefact Assessment for Visual media; An Engineering Approach", Broadcast Asia Conference, Singapore, pp. 1-6 (2008)
- A. Punchihewa, J. Armstrong, "Benchmarking Video Codecs for Blockiness Compression Artefacts", Image and Vision Computing New Zealand (IVCNZ'07), Hamilton, New Zealand, pp. 467-472 (2007)
- A. Punchihewa, J Armstrong, "Objective Evaluation of Intra-Frame Coded Codecs for Blockiness Artefact", Electronics New Zealand Conference, Wellington, NZ, pp. 312-317 (2007)
- G.A.D. Punchihewa, D.G. Bailey, and R.M. Hodgson, "Integrated Test and Measurement Environment to Evaluate Codecs for Compression Artefacts", in Broadcast Asia Conference, Singapore, 1-6 (2007).
- G.A.D. Punchihewa, D.G. Bailey, and R.M. Hodgson, "Integrated Test Pattern Generator and Measurement Algorithm for Colour Compression Artefacts in Ubiquitous Colour Spaces", in Image and Vision Computing New Zealand (IVCNZ'06), Great Barrier Island, NZ, 467-472 (27-29 November, 2006).
- G.A.D. Punchihewa, D.G. Bailey, and R.M. Hodgson, "Synthetic Colour Test Image for Objective Quality Assessment of Digital Codecs", Broadcast Asia Conference (2006).
- G.A.D. Punchihewa, D.G. Bailey and R.M. Hodgson, "Benchmarking Image Codecs by Assessment of Coded Test Images: The development of Test Images and New Objective Quality Metrics", Journal of Telecommunications and Information Technology, 1/2006, pp 11-16 (2006)
- A. Punchihewa, D.G. Bailey, and R.M. Hodgson, "Colour Reproduction Performance of JPEG and JPEG2000 Codecs", 8th International Symposium on DSP and Communication Systems, (DSPCS'2005) and 4th Workshop on the Internet, Telecommunications and Signal Processing, (WITSP'2005), Noosa Heads, Australia, pp 312-317 (19-21 December, 2005)
- G.A.D. Punchihewa, D.G. Bailey, and R.M. Hodgson, "Objective evaluation of edge blur and ringing artefacts: application to JPEG and JPEG2000 image codecs", Image and Vision Computing New Zealand, Dunedin, New Zealand, pp 61-66 (28-29 November, 2005)
- G.A.D. Punchihewa, D.G. Bailey and R.M. Hodgson, "The Development of a Synthetic Colour Test Image for Subjective and Objective Quality Assessment of Digital Codecs", 11th Asia Pacific Conference on Communications, Perth, Australia, pp 881-885 (October 2005)
- G.A.D Punchihewa, D. G. Bailey and R. M. Hodgson, "Objective Quality Assessment of Coded Images: The development of New Quality Metrics", 3rd Workshop on the Internet, Telecommunications and Signal Processing, WITSP'04, Adelaide, Australia, pp 1-6, (December 2004)
- A. Punchihewa, D.G.Bailey, R.M. Hodgson, "MPEG-4 and the challenges of benchmarking its implementations", Proceedings Image and Vision Computing New Zealand 2004, Akaroa, New Zealand, pp 71-76 (November 2004)
- G.A.D. Punchihewa, D.G. Bailey, R.M. Hodgson, "Z-Domain Analysis of Ghost Cancellation for Television Signals", Proceedings of the 7th International Symposium on Digital Signal Processing for Communication Systems DSPCS'2003, Coolongatta, Australia, pp 550-556 (December 2003).
- A. Punchihewa, D.G. Bailey, R.M. Hodgson, "A Survey of Coded Image and Video Quality Assessment", Proceedings of Image and Vision Computing New Zealand, Palmerston North, pp 326-331 (November 2003).
- A. Punchihewa and D.G. Bailey, "Artefacts in Image and Video Systems: Classification and Mitigation", Proceedings Image and Vision Computing New Zealand, Auckland, New Zealand, pp 197-202 (November 2002).
- Marco Carli, Mylene Farias, Donald Bailey, Sanjit Mitra, "Error control and Concealment for Video Transmission", 2002 International Symposium on Wireless Personal Multimedia Communications, Honolulu, Hawaii, pp 812-815 (October, 2002).
- Donald Bailey, Marco Carli, Mylene Farias, Sanjit Mitra, "Quality Assessment for Block-based Compressed Images and Videos with regard to Blockiness Artefacts", 2002 Tyrrhenian International Workshop on Digital Communications, IWDC 2002, Capri, Italy, pp 237-241, (September 2002).