Patent ID: 8269816
Filing Date: 2012-09-18
Classification: H04N

Abstract:
1. A computing device for distributing video image data during a multi-participant conference, said computing device comprising: a set of receiving modules for receiving image data from participant devices of the multi-participant conference; and an encoding module for generating, from the received image data, composite image data that includes sub-images from the participant devices, wherein the encoding module generates the composite image data by inter-block encoding each of the sub-images by examining blocks that are aligned with sub-pixel locations, wherein said examining comprises calculating a value for a sub-pixel location by performing interpolation operations on sets of pixels vertically and horizontally aligned with the sub-pixel location, wherein a set of constraints is applied to a region within which the interpolation operations are performed to allow the encoding of the sub-image to be independent of the encoding of any other sub-image.