Christine Guillemot
Towards dense multi-view imaging: challenges and research issues

Christine Guillemot, INRIA, France


Abstract: All imaging systems are about capturing light rays emitted by the imaged 3D scene. While in classical 2D cameras, each sensor element sums light rays emitted by one point of the scene, research effort has been dedicated in the past decade to the design of imaging systems, e.g. rigs of cameras, cameras mounted on a moving gantry, or plenoptic cameras, to record light rays along different viewpoints or emitted by the scene along different orientations.

This talk will review recent progress in multi-view and plenoptic imaging. It will focus on several challenging processing problems, the representation and compression of the very large volume of captured visual data, the problem of restoration to overcome technological limitations.  It will finally present processing problems such as editing, now common with 2D images, which must also be made possible with these – possibly very dense – multi-view captures, if in the future we want a wide deployment of these imaging modalities.

Brief Biography: Christine Guillemot holds a PhD degree from ENST (Ecole Nationale Superieure des Telecommunications) Paris. From November 1985 to October 1997, she has been with FRANCE TELECOM, where she has been involved in various projects in the area of coding for TV, HDTV and multimedia. From Jan.90 to mid 91, she has worked at Bellcore, NJ, USA, as a visiting scientist.  Since November 1997, she is 'Director of Research' at INRIA, head of a research team dedicated to the design of algorithms for the image and video processing chain, with a focus on analysis, representation, compression, and editing, including for emerging modalities such as high dynamic range imaging and light fields. She has served as Associate Editor for several IEEE journals (IEEE Trans. on Image Processing, IEEE Trans. on Circuits and Systems for Video Technology, IEEE Trans. on Signal Processing, …) and She is currently a member of the IEEE IVMSP Committee.  She is currently Senior Area Editor of IEEE Trans. On Image Processing (2016-2017) and member of the IEEE- trans. On Multimedia steering committee. She has been a member of the IEEE IMDSP (2002-2007) and IEEE MMSP (2005-2008) technical committees. Christine Guillemot is an IEEE fellow.


Light-field Processing – a New Way of Creating Images and Movies

Siegfried Foessel, Fraunhofer IIS, Germany


 Abstract: In the last century, imaging technology captured a scene, but with restrictions due to the lack of development in technology. In addition, the photographer was responsible for the right camera adjustment, including viewing direction, focal length, focus, aperture and release time. Furthermore, light rays at the single camera entrance pupil were bundled together and projected to a sensitive surface; so, all adjustments were burnt into an image and could not be altered afterward. Today, due to advancements in camera technology, we can capture light-field information with much greater detail. Plenoptic cameras with micro-lens arrays or camera arrays can be used to capture light-field with more granularity. This new method allows for separating tiny, individual light ray bundles, and recombining them in new ways. Refocusing virtual viewpoints, along with calculating depth information and reflectance functions can be processed in a post-capturing step. In addition, new special effects such as depth-based color grading, relighting and virtual camera movements allow for mixing real-world and computer generated images. This presentation will provide an outlook on future capabilities using various workflows and computational steps.

Brief Biographyis head of the department Moving Picture Technologies at the Fraunhofer IIS in Erlangen and spokesman of the Fraunhofer Alliance Digital Media. He was responsible for projects like the camera development ARRI D20/D21, the DCI (Digital Cinema Initiatives) certification test plan or the JPEG2000 standardisation for Digital Cinema. Siegfried is member of various standardisation bodies and organisations like SMPTE, FKTG, ISO and DIN. In 2013 he received the SMPTE Fellow award for his work in Digital Cinema. In 2014 he received the Josef-von-Fraunhofer award for the development of easyDCP, a tool for creating and playback of Digital Cinema Packages. In 2014 he was elected to the president of the FKTG (Fernseh- und Kinotechische Gesellschaft e.V.), the german equivalent to SMPTE. Since 2016 he is SMPTE board member and regional governor for EMEA, Africa and South America.