Lagrange multiplier selection in hybrid video coder control

نویسندگان

  • Thomas Wiegand
  • Bernd Girod
چکیده

The Lagrangian coder control together with the parameter choice is presented that lead to the creation of the new hybrid video coder specifications TMN-10 for H.263 and TML for H.26L. An efEcient approach for the determination of the encoding parameters is developed. It is shown by means of experimental results that the Lagrange multiplier for the macroblock mode decision corre sponds to the negative slope of the distortion-rate curve of the p r e diction error coding. This distortion-rate curve is parameterized by the quantization parameter of the DCT coefficients motivating the established dependency with the Lagrange multiplier.

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تاریخ انتشار 2001