Improving the Rate-distortion Model of HEVC Intra by Integrating the Maximum Absolute Error

Karina Jaskolka; André Kaup

ICASSP 2019accepted0 citations

Improving the Rate-distortion Model of HEVC Intra by Integrating the Maximum Absolute Error

Abstract

Normally, the mean squared error in conjunction with the rate is used to optimize the compression in hybrid video coding. However, in some areas, such as medical image coding, not only the average error but also the maximum error should be considered. Recently, it has been shown that incorporating the maximum absolute error into the calculation of the rate-distortion optimization (RDO) of the HEVC encoder can improve image quality, while preserving the average error and the rate. In this paper, we optimize the inclusion of the maximum absolute error in the RDO by considering the whole quantization parameter range as well as the different prediction unit sizes. Compared to the existing extended RDO, up to 1.5 % bitrate can be saved for the same maximum absolute error reduction.

BibTeX

@inproceedings{icassp2019_improvingtherate,
  title = {Improving the Rate-distortion Model of HEVC Intra by Integrating the Maximum Absolute Error},
  author = {Karina Jaskolka and André Kaup},
  booktitle = {ICASSP 2019},
  year = {2019}
}