Image processing

Details Image processing Image processing

1997-02-04

1998-07-21

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345422, 345501, 358448, G00T 1500

Patent

active

057840644

ABSTRACT:
Moving output images are presented to a two dimensional display, such as a conventional television receiver (26). Three video sources are read from a compact disc, a notional front image and a notional back image being in the form of CD-I A and B planes. A notional back plane is a full frame, full video rate image, read from the disc as a coded MPEG data stream. After decoding, each pixel of each image includes depth data and opacity data. It is thus possible for an image in the notional front or notional middle plane to pass behind an object in the notional back plane. The depth and opacity data is severely compressed for the MPEG stream, by a process of quantisation and run-length encoding. The low resolution depth values for each pixel are converted to high resolution depth values via a look up table in order to further define the depth of each notional plane.

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