GOP Structure Conversion in Transcoding MPEG-2 to H.264/AVC
| Autor: | Jechang Jeong, Kangjun Lee, Gwanggil Jeon |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Computational complexity theory
Computer science Real-time computing ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Universal multimedia access Data_CODINGANDINFORMATIONTHEORY computer.file_format Transcoding Video quality computer.software_genre Motion vector Video compression picture types MPEG-2 computer Group of pictures |
| Zdroj: | Multimedia Techniques for Device and Ambient Intelligence ISBN: 9780387887760 Multimedia Techniques for Device and Ambient Intelligence |
| DOI: | 10.1007/978-0-387-88777-7_1 |
| Popis: | Currently, H.264/AVC is adopted in many applications. In the existing coding standard, the MPEG-2 main profile which supports B pictures for bidirectional motion prediction is widely used in applications such as HDTV and DVD's. Therefore, transcoding the MPEG-2 main profile to the H.264/ AVC baseline profile is necessary for universal multimedia access. In this transcoding architecture including the group of pictures structure conversion, for fast re-estimation, the proposed algorithms adopt the adaptive search range selection through the linearity test of a predictive motion vector. And for fast mode decision, the reference region information is used. The proposed algorithms reduce the computational complexity while maintaining the video quality. |
| Databáze: | OpenAIRE |
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