×

Methods and Systems for Maintenance and Use of Coded Block Pattern Information

  • US 20080008394A1
  • Filed: 03/31/2007
  • Published: 01/10/2008
  • Est. Priority Date: 07/10/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method for combining layers in a multi-layer bitstream, said method comprising:

  • a) receiving a bitstream comprising encoded image coefficients and encoded block pattern (Cbp) information wherein said Cbp information identifies regions in said bitstream that comprise transform coefficients;

    b) decoding said Cbp information;

    c) parsing said bitstream by using said Cbp information to identify bitstream regions comprising transform coefficients;

    d) scaling first-layer transform coefficients in said bitstream to match a characteristic of a second-layer in said bitstream;

    e) adding said scaled, first-layer transform coefficients to second-layer transform coefficients to form combined coefficients in a combined layer; and

    f) calculating combined Cbp information for said combined layer wherein said combined Cbp information identifies regions in said combined layer that comprise transform coefficients.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×