×

Methods and systems for scalable-to-non-scalable bit-stream rewriting

  • US 8,767,834 B2
  • Filed: 01/24/2008
  • Issued: 07/01/2014
  • Est. Priority Date: 03/09/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for image bitstream processing, said method comprising:

  • extracting symbols from a multi-layer image bitstream, said symbols being related to an image portion;

    generating combined transform coefficients from said symbols, wherein said combined transform coefficients are a combination of enhancement layer coefficients and base layer coefficients;

    determining whether said combined transform coefficients comprise any non-zero coefficients;

    when said combined transform coefficients comprise a non-zero coefficient, using a quantization parameter identified in said symbols for processing said image portion; and

    when said combined transform coefficients do not comprise a non-zero coefficient, using a default quantization parameter, wherein said default quantization parameter is a quantization parameter used for a previous image portion, for processing said image portion.

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