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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Panusopone, K. Xue Fang Limin Wang |
| Copyright Year | 2007 |
| Description | Author affiliation: Connected Home Solutions, Motorola, San Diego, CA (Panusopone, K.; Xue Fang; Limin Wang) |
| Abstract | ITU-T H.264 | MPEG-4 AVC includes weight prediction in inter prediction process to improve coding efficiency when encoding video with a fading scene. Weight prediction, however, increases complexity of motion estimation (ME) process significantly in terms of additional operations and extra memory requirement. AVC performs weight prediction by scaling pixel value of the reference block to match with the fading effect. To follow this approach in ME, scaling operation has to be done at every pixel of all search blocks or precalculated before encoding. This paper proposes an efficient implementation method of weight prediction by scaling pixel value of the current block with an inverse of the weight factor instead. The proposed method reduces both the number of operations and memory requirement while sacrificing a negligible loss due to rounding error. |
| Starting Page | 1 |
| Ending Page | 2 |
| File Size | 269853 |
| Page Count | 2 |
| File Format | |
| ISBN | 1424407621 |
| DOI | 10.1109/ICCE.2007.341451 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-01-10 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Motion estimation MPEG 4 Standard Automatic voltage control Fading Encoding Layout Switches Equations Bidirectional control Roundoff errors |
| Content Type | Text |
| Resource Type | Article |
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