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Videoconferencing server with camera shake detection

  • US 9,762,856 B2
  • Filed: 11/25/2013
  • Issued: 09/12/2017
  • Est. Priority Date: 11/29/2012
  • Status: Expired due to Fees
First Claim
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1. A video conferencing server for immersive video conferencing, said video conferencing server being adapted to receive and combine video streams captured by cameras of plural video clients and to generate immersive video streams for delivery to and play-out by said plural video clients,wherein said video conferencing server comprises:

  • a cut-out module adapted to generate a foreground mask for a video frame received from a conferencing client;

    a camera shake detector adapted to determine a displacement vector for a subset of features in said video frame, said displacement vector representing a two-dimensional motion of said subset of features between a background mask obtained by inverting said foreground mask and a previous background mask generated for a previous video frame received from said conferencing client;

    a camera shake correcting module adapted to apply a displacement opposite to said displacement vector to said foreground mask before use thereof in said immersive video streams to thereby correct camera shake effects of said conferencing client; and

    a signaling unit adapted to generate a shake indication into an immersive video stream delivered to said conferencing client.

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