An important part of the 3D@Home Consortium's mission is to support the creation of QUALITY 3D content of all types. But what is "Quality 3D" content and how should "Quality 3D" be defined?
To begin to answer these questions and assist other artists and stereographers, we assembled a number of experts who offer their individual observations, recommendations and guidelines for making Quality 3D films, programs and games. Read More
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3D Stereo Rendering: New Processing & Perception Challenges
May 11, 2010 - Laurent Blondé, Didier Doyen, Thierry Borel, Technicolor
The advent of 3D to the home raises a number of challenges beyond the basic display of an available stereo pair. A number of them are technical challenges, for example the adaptation of various 3D content types to different display technologies. Besides these, perception challenges relate to the quality of the experience, fatigue, eye strain, or variability of perception, and involve observation conditions and observers.
This paper presents a basic tutorial on “3D Stereo Rendering” technology, a consumer-side constituent of the 3D delivery chain. As a shorthand way of saying “Adapting decoded 3D content to each target 3D display technology — taking into account Video Quality and Human Factors”, “3D Stereo Rendering” brings together perceptual understanding and know-how, algorithms and video processing techniques.
3D stereo rendering can be implemented as a set-top, gateway, or software-processing block, getting its input signals from 3D decoding unit(s) and providing output signals to various 3D display technologies. A number of processing modules need to be developed and assembled to perform 3D rendering. These include disparity or depth map extraction, view interpolation, subtitle and graphic insertion, color and disparity processing, resampling, etc. While some modules depend mainly on the technical environment – as display characteristics and signal formats – some others will depend on observer characteristics and observation conditions. This is a new and fundamental aspect in the design of home entertainment products.
The aim of this paper is to present and discuss the topic of 3D stereo rendering, and the related technical and perception challenges. After a general introduction and some definition, a modular structure is presented, first addressing technical challenges and introducing processing modules related to quality-of-experience enhancement. A following section introduces the needs for perception-related processing and, finally, elements are given to address these perception challenges thanks to automatic or user-adjustable 3D rendering.
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