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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sung-Eun Kim Jong-Ki Han Jae-Gon Kim |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Inf. & Commun. Eng., Sejong Univ., Seoul, South Korea (Sung-Eun Kim; Jong-Ki Han) |
| Abstract | In this paper, we propose a fast ME (motion estimation) algorithm for MPEG-4 to H.264 transcoder. The transcoding speed is affected dominantly by the computational complexity of encoder part in transcoder, where ME module of H.264 encoder has high complexity due to considering 7 modes. In order to increase the speed of transcoding between MPEG-4 and H.264, we use 3 PMVs (predicted motion vectors) and the mode information of MBs (macroblocks) provided from the decoder part of transcoder. Since the proposed 3 PMVs are very close to an optimal motion vector, and we consider only some restricted modes according to the MB information transferred from decoder part, the proposed scheme can speed up the transcoding procedure without loss of image quality. We show simulation results that CPU time consumed by the proposed scheme has been reduced significantly while the transcoded video quality remains unchanged. |
| File Size | 350317 |
| File Format | |
| ISBN | 0780391349 |
| DOI | 10.1109/ICIP.2005.1530477 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-09-14 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Motion estimation MPEG 4 Standard Transcoding Decoding Bandwidth Bit rate Lagrangian functions Cost function Broadcasting Computational complexity Motion Estimation Transcoder MPEG-4 H.264 |
| Content Type | Text |
| Resource Type | Article |
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