Patent ID: 8027385
Filing Date: 2011-09-27
Classification: G06F,G09G,H04N

Abstract:
1. A computer-implemented method of encoding a first image and a second image in a sequence of images of a video stream for transmission over a communication network, said computer running an object-based computer graphics application, the method comprising the steps of: (i) rendering a first portion of the first image from a display list in the object-based computer graphics application; (ii) encoding the first portion according to a predetermined encoding scheme; (iii) rendering a second portion of the second image at a corresponding location of the first portion from the display list in the object-based computer graphics application; (iv) interpreting the display list in the computer graphics application to identify changes between the first image and the second image and an attribute of an object at the location of the rendered portion; and (v) using the identified changes and the attribute of the object to determine an amount of quantization in which the second image is encoded according to the predetermined encoding scheme.