Media Technology
Research Centre
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  Quasi-3D Rendering
  This project is an investigation of the compositing and rendering of scenes which appear to be 3D, using techniques more closely related to 2D. This is being done using multi-layer scan-conversion in order to attain very high resolutions, as needed for cinematography, upto 32k by 32k pixels.

We start from source pictures which are either synthetic graphics or captured real images. These are converted to a pixel-free form, using technology we developed as part of our Picture Representation work.

  Dr Man Qi   Dan Su

Phil Willis (Grant holder)

  Research Results

Quasi3D Examples

This section includes a cross-section of working material used by the project. They are samples of movie-specification directories, used by us to compile stacks of cels and animate them over time. In selected cases we have included avi movies. We also show small jpeg images taken from different movie frames. There are files showing the language used to locate and animate the various cels: these would be used to build complete stack files for each frame, which our renderer then turns into pictures. The rendering output resolution is chosen independently of the input pictures'. Supersampling allows us to tailor the output quality. Focus can be adjusted. Lighting can be dynamically changed. The viewpoint can be dynamically changed.

The sample pictures and files are to give the reader an idea of the range of tests we performed when validating the system, as well as give a feel for how it works and the range of input visual quality supported. The movies are compressed with WinZip, for faster web transmission.

A note on the quality of the movies: The movies are prepared using Adobe Premier and we view them with the Microsoft Media Player. Our experience is that this sometimes introduce defects, notably small runs of "missing" pixels and ghosting of earlier frames, which are not present in our source material. Each movie is created from Targa images (lossless) generated by Quasi3D. As movie files are intrinsically very large, we have restricted the image size, the frame rate, or both.

Quasi3D Papers

The papers are shown in increasing date order.
  Funding Agency
  The work is funded by EPSRC and the European Union and Universities UK.
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