Real-time video compression :techniques and algorithms
- 作者: Westwater, Raymond.
- 其他作者: Furht, Borivoje.
- 出版: Boston : Kluwer ©1997.
- 稽核項: 1 online resource (vii, 164 pages) :illustrations.
- 叢書名: The Kluwer international series in engineering and computer science ;SECS 376.Multimedia systems and applications
- 標題: TECHNOLOGY & ENGINEERING , TECHNOLOGY & ENGINEERING Television & Video. , Video compression. , Multimedia systems. , Television & Video. , Real-time data processing. , Electronic books.
- ISBN: 0585323135 , 9780585323138
- ISBN: 0792397878 , 9780792397878 , 9780585323135
- 試查全文@TNUA:
- 附註: Includes bibliographical references (pages 155-161) and index. The Problem of Video Compression -- The MPEG Video Compression Standard -- The H.261/H.263 Compression Standard for Video Telecommunications -- The XYZ Video Compression Algorithm -- Discrete Cosine Transform -- Quantization -- Entropy Coding -- VLSI Architectures for the XYZ Video Codec -- Experimental Results Using XYZ Compression -- Conclusion.
- 摘要: Real-Time Video Compression: Techniques and Algorithms introduces the XYZ video compression technique, which operates in three dimensions, eliminating the overhead of motion estimation. First, video compression standards, MPEG and H.261/H.263, are described. They both use asymmetric compression algorithms, based on motion estimation. Their encoders are much more complex than decoders. The XYZ technique uses a symmetric algorithm, based on the Three-Dimensional Discrete Cosine Transform (3D-DCT). 3D-DCT was originally suggested for compression about twenty years ago; however, at that time the computational complexity of the algorithm was too high, it required large buffer memory, and was not as effective as motion estimation. We have resurrected the 3D-DCT-based video compression algorithm by developing several enhancements to the original algorithm. These enhancements make the algorithm feasible for real-time video compression in applications such as video-on-demand, interactive multimedia, and videoconferencing. The demonstrated results, presented in this book, suggest that the XYZ video compression technique is not only a fast algorithm, but also provides superior compression ratios and high quality of the video compared to existing standard techniques, such as MPEG and H.261/H.263. The elegance of the XYZ technique is in its simplicity, which leads to inexpensive VLSI implementation of any XYZ codec. Real-Time Video Compression: Techniques and Algorithms can be used as a text for graduate students and researchers working in the area of real-time video compression. In addition, the book serves as an essential reference for professionals in the field.
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Real-Time Video Compression: Techniques and Algorithms introduces the XYZ video compression technique, which operates in three dimensions, eliminating the overhead of motion estimation. First, video compression standards, MPEG and H.261/H.263, are described. They both use asymmetric compression algorithms, based on motion estimation. Their encoders are much more complex than decoders. The XYZ technique uses a symmetric algorithm, based on the Three-Dimensional Discrete Cosine Transform (3D-DCT). 3D-DCT was originally suggested for compression about twenty years ago; however, at that time the computational complexity of the algorithm was too high, it required large buffer memory, and was not as effective as motion estimation. We have resurrected the 3D-DCT-based video compression algorithm by developing several enhancements to the original algorithm. These enhancements make the algorithm feasible for real-time video compression in applications such as video-on-demand, interactive multimedia, and videoconferencing. The demonstrated results, presented in this book, suggest that the XYZ video compression technique is not only a fast algorithm, but also provides superior compression ratios and high quality of the video compared to existing standard techniques, such as MPEG and H.261/H.263. The elegance of the XYZ technique is in its simplicity, which leads to inexpensive VLSI implementation of any XYZ codec. Real-Time Video Compression: Techniques and Algorithms can be used as a text for graduate students and researchers working in the area of real-time video compression. In addition, the book serves as an essential reference for professionals in the field.
來源: Google Book
來源: Google Book
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