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Technical Program
Paper Detail
| Paper: | MA-L2.4 |
| Session: | H.264 Video Coding - I |
| Time: | Monday, October 9, 10:40 - 11:00 |
| Presentation: |
Lecture
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| Title: |
A MAP FRAMEWORK FOR EFFICIENT SKIP/CODE MODE DECISION IN H.264 |
| Authors: |
Yafan Zhao; Robert Gordon University | | | | | Maja Bystrom; Boston University | | | | | Iain Richardson; Robert Gordon University | | |
| Abstract: |
While the H.264 standard offers improved compression efficiency compared with prior video coding standards, this efficiency arises at the cost of significant complexity. We present a method of reducing complexity which estimates, prior to coding each macroblock, whether the coder would choose the skip or code mode for the macroblock. Computation savings is achieved, since pre-coding of skipped macroblocks is avoided. The decision to skip a macroblock is based on estimating and modelling mode cost differences, and employing these models in a MAP framework. Results are shown which indicate that for low-activity sequences savings of over 70% in computation time can be achieved with little or no decrease in video quality. |
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