JPEG issues a call for proposals on light field coding technologies
JPEG PLENO – This newly initiated project encompasses future image representations that will move beyond the traditional planar image representations. Potential representations can include omnidirectional, depth enhanced, light fields, point cloud and holographic imagery. JPEG committee is taking a holistic approach to cover the entire content workflow from capture, production, post-production and rendering.
As part of the JPEG Pleno standard, JPEG has continued work on workflows, conversion between the various modalities (light fields, point clouds, depth, …), and rendering. An important part of the work is a concerted effort to develop quality metrics for objective testing and procedures for effective subjective quality assessment.
Version 2 of the JPEG Pleno Call for Proposals was issued and requests contributions for solutions in the area of light fields, which the JPEG committee believes has reached a sufficient maturity for standardisation to be the first step towards JPEG Pleno specifications.
A final version of the JPEG Pleno Call for Proposals for light fields is expected at the 74th JPEG meeting located in Geneva, Switzerland during January 16-20, 2017. Subsequent calls addressing other modalities such as omnidirectional, depth enhanced, point cloud and holographic imagery are planned to follow.
JPEG XS – This project was recently initiated to provide a low-latency lightweight coding system, supporting higher resolutions and frame rates while also assuring transparent visual quality and compression efficiency under reasonable low-power and bandwidth restrictions. A Call for Proposals was published in March 2016 and based on objective and subjective assessments of submitted technologies, a first test model for the upcoming JPEG XS standard was created during the 73rd JPEG meeting in Chengdu, China. JPEG committee invites interested parties – in particular coding experts, codec providers, system integrators and potential users of the foreseen solutions – to contribute to the further specification process.
JPEG Privacy & Security – The 3rd public workshop on JPEG Privacy & Security was organised at the JPEG meeting in Chengdu on October 18, 2016. In this workshop, 8 speakers delivered attractive presentations addressing various issues on privacy and security and solutions such as encryption methods and steganography for JPEG images, face transmorphing compliant with legacy JPEG, cryptanalysis, and standard framework applied to big data. The proceedings of this workshop are published on the JPEG website.
The JPEG committee continues investigating solutions that will empower end-users to protect their privacy when sharing JPEG files or to allow professional and cultural heritage archives to signal traceable information such as ownership rights and history of changes.
JPEG intends to issue a future Call for Proposals with respect to privacy and security technologies based on the identified use cases and requirements.
JPEG AIC – Qualinet, a European network on Quality of Experience in Multimedia Systems and Services (www.qualinet.eu) and the JPEG committee cooperated to identify the next generation of still image codecs and organized a Grand Challenge on Image Compression at the ICIP 2016 conference in Phoenix, Arizona (2016.ieeeicip.org). Both lossy and lossless image codecs were accessed, amongst them HEVC SCC, Daala – an open source video codec by Mozilla – and an improved and fully compliant JPEG encoder called "JPEG on Steroids". Compression performance was evaluated both objectively by mathematical quality indices, and subjectively by human observers. Most notably, the improved JPEG compliant encoder – "JPEG on Steroids" – turned out to be very competitive at higher bitrates. The presentation made at the ICIP can be downloaded here from JPEG website.
"JPEG continues to define the future of imaging through its standardization initiatives and helps industry to offer novel products and services with new and enhanced imaging experiences." said Prof. Touradj Ebrahimi, the Convener of the JPEG committee.
The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG PLENO families of imaging standards.
The WG1 group meets nominally three times a year, in Europe, North America and Asia. The latest 72nd meeting was held on May 30 - June 3, 2016 in Geneva, Switzerland and was hosted by UTU-T. The next (74th) WG1 Meeting will be held on Januari 16-20, 2017, in Geneva, Switzerland.
More information about JPEG and its work is available at www.jpeg.org or by contacting Peter Schelkens and Fumitaka Ono of the JPEG PR subgroup at .
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