Real-Time Video Compression Techniques and Algorithms /

• Κύριοι συγγραφείς: Westwater, Raymond (Συγγραφέας), Furht, Borko (Συγγραφέας)
• Συγγραφή απο Οργανισμό/Αρχή: SpringerLink (Online service)
• Μορφή: Ηλεκτρονική πηγή Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Boston, MA : Springer US, 1997.
• Σειρά: The Kluwer International Series in Engineering and Computer Science, Multimedia Systems and Applications, 376
• Θέματα: Engineering.; Computer science.; Computer communication systems.; Special purpose computers.; Electrical engineering.; Electrical Engineering.; Special Purpose and Application-Based Systems.; Computer Communication Networks.; Computer Science, general.

 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. 

 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.