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Video encoding in a video conference

  • US 8,269,816 B2
  • Filed: 02/08/2010
  • Issued: 09/18/2012
  • Est. Priority Date: 04/28/2005
  • Status: Active Grant
First Claim
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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.

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