Interpolation free sub-pixel motion estimation for H.264

PR Hill, T-K Chiew, DR Bull

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)
558 Downloads (Pure)


Sub-pixel motion compensation plays an important role in compression efficiency within modern video codecs such as MPEG2, MPEG4 and H.264. Sub-pixel motion compensation is implemented within these standards using interpolated pixel values at 1/2 or 1/4 pixel accuracy. Such interpolation gives a good reduction in residual energy for each predicted macroblock and therefore improves compression. However, such interpolation is very computationally complex for the encoder. This is especially true for H.264 where the cost of an exhaustive set of macroblock segmentations need to be estimated in order to obtain an optimal mode for prediction. This paper presents a novel interpolation-free scheme for sub-pixel motion compensation using the result of the full pixel SAD distribution of each motion compensated block applied to an H.264 encoder. This system produces reduced complexity motion compensation with a controllable trade-off between compression performance and encoder speed. These methods facilitate the generation of a real time software H.264 encode.
Translated title of the contributionInterpolation free sub-pixel motion estimation for H.264
Original languageEnglish
Title of host publication2006 IEEE International Conference on Image Processing, Atlanta, GA, United States
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1337 - 1340
Number of pages4
ISBN (Print)1424404819
Publication statusPublished - Oct 2006
EventInternational Conference on Image Processing - Atlanta, United States
Duration: 1 Oct 2006 → …

Publication series

ISSN (Print)15224880


ConferenceInternational Conference on Image Processing
Country/TerritoryUnited States
Period1/10/06 → …

Bibliographical note

Other: 10.1109/ICIP.2006.312581
Rose publication type: Conference contribution

Terms of use: Copyright © 2006 IEEE. Reprinted from IEEE International Conference on Image Processing, 2006.

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  • video coding
  • interpolation
  • motion compensation


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