Bit-rate reduction of MPEG compressed video
Compressed video processing is becoming increasingly important in many digital video applications. There are two main approaches for compressed video processing. The first approach is called re-encoding and the second is called compressed domain processing (CDP). Bit-rate reduction is a very common...
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| Published in: | IEEE CCECE2002. Canadian Conference on Electrical and Computer Engineering. Conference Proceedings (Cat. No.02CH37373) Vol. 2; pp. 1049 - 1054 vol.2 |
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| Main Authors: | , , , |
| Format: | Conference Proceeding |
| Language: | English |
| Published: |
IEEE
2002
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Compressed video processing is becoming increasingly important in many digital video applications. There are two main approaches for compressed video processing. The first approach is called re-encoding and the second is called compressed domain processing (CDP). Bit-rate reduction is a very common process in video processing applications. In our research, the bit-rate reduction process is implemented using an SNR-scaling scheme. We have implemented enhanced compressed domain processor software in order to reduce the MPEG video bit-rate in the compressed domain. The software includes two additional algorithms to achieve better quality. The first is to remove the propagated requantization noise by calculating the noise with DCT domain motion compensation (MC-DCT) method. And the second is an optimized rate-control to improve the quality. Simulation results show that our proposed CDP algorithms outperform re-encode algorithm in terms of speed and quality. |
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| ISBN: | 0780375149 9780780375147 |
| ISSN: | 0840-7789 2576-7046 |
| DOI: | 10.1109/CCECE.2002.1013090 |