Luther, A.C., Digital Video in the PC Environment, 2nd edition, McGraw-Hill Book Company, New York, 1991.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....pipeline. This seems like a fruitful area for future research. Another possibility is to augment a transform coding scheme by adding basis functions that directly represent edges and bilinearly interpolated shading. The screen axis aligned rectangles of Intel s DVI PLV standard offer some of this [Luther91] The present paper can be viewed as a generalization of this scheme to unconstrained overlapping triangles. For animation sequences, a geometric model can be used to derive optical flow the interframe movement of each pixel in an image. Optical flow can in turn be used to compute block motion ....

Luther, A.C., Digital Video in the PC Environment, 2nd edition, McGraw-Hill Book Company, New York, 1991.

....imagery and spatially distributed audio combine to present a virtual world that is fairly close to real world to end users. In the virtual world, individuals can interact with other individuals in a manner that is almost as effective as real world interaction. Users can carry out surrogate travel [3], in which, an individual sitting in his or her living room can view scenes of distant sites and navigate through them almost as effectively as real world travel. Using sophisticated information services, users can create their own personalized newspapers tailored to suit their reading preferences ....

A.C. Luther. Digital Video in the PC Environment. Chapters 3, 4, 5, and 6, pages 45--99, McGraw Hill, February 1989.

....in Section 5. A survey of related work is covered in Section 6. Finally, the conclusion and future directions are included in Section 7 and Section 8. 2 Two buffer Scheme Advances in compression techniques make it possible to have VLSI chips perform decompression on the fly when displaying video [8, 5, 10, 13]. Management of the buffers for compressed video and audio data has an advantage over uncompressed data because of the reduced size of compressed continuous media and the decreased bandwidth requirement. To provide a better illustration of the k buffer compensation scheme, we introduce the ....

A. Luther. Digital Video in the PC Environment. McGraw-Hill, New York, NY, 2 edition, 1991.

....that require this level of service include scientific visualization, image processing, and recording and playback of color video. The data rates required by some of these applications range from 1:2 1 megabytes second for DVI compressed video and 1:4 megabits second for CD quality audio [1], and up to 90 megabytes second for uncompressed full frame color video. Using data striping [2] a technique that distributes the data of an individual object over several storage servers, we have built a system, called Swift, that addresses the problem of data rate mismatches between the ....

A. C. Luther, Digital Video in the PC Environment. M c Graw-Hill, 1989.

....switch as illustrated in Figure 2.12. Similarly, facilities such as synchronisation and decompression are viewed as shared networked services within a DAN. In conventional architectures, lack of bus bandwidth generally forces decompression to be performed on the same physical board as the device [Luther89, Szabo91] requiring hardware which is dedicated to each workstation. Decompression CPU Audio Device Display Device Synchronisation ATM Switch Network Device Figure 2.12: The DAN Multimedia Workstation. The local nature of the environment provides highly predictable communication ....

....the disk as illustrated in Figure 3.4. Algorithms which aim to provide an optimal layout for audio on a CD ROM are given in [Yu89] The file format used in the DVI system for CD ROM is composed of a sequence of blocks which may contain data interleaved from a collection of video and audio streams [Luther89] The DVI Audio Video Support System (AVSS) also allows still images, application data and real time underlay data to be incorporated into an interleaved file. A similar approach is used in the MPEG standard which aims to be both application and device independent [Szabo91] Both of these ....

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A. C. Luther. Digital Video in the PC Environment. McGrawHill, New York, 1989. (pp 30, 38, 62)

....that require this level of service include scientific visualization, image processing, and recording and play back of color video. The data rates required by some of these applications 1 vary from 1:2 megabytes second for DVI compressed video and 1:4 megabits second for CD quality audio [1], to more than 20 megabytes second for full frame color video. Advances in VLSI, data compression, processors, communication networks, and storage capacity mean that systems capable of integrating continuous multimedia will soon emerge. In particular, the emerging ANSI fiber channel standard will ....

A. C. Luther, Digital Video in the PC Environment. M c Graw-Hill, 1989.

....network as an interconnect for a MM workstation allowing the use of multiple highbandwidth streams without significant contention on the resources. In conventional workstations, the bus bandwidth problem forces, for example, decompression to be performed on the same physical board as the device [Luther 89, Szabo 91] requiring hardware which is dedicated to each workstation. 4.1.3. Operating System MM applications must perform activities such as acquisition presentation, compression decompression and processing of continuous media within specified time constraints to guarantee the QoS required by ....

A. Luther, Digital Video in the PC Environment, McGraw Hill, New york, 1989

....features of the image the face to enhance the image. Alternatively, the user might be able to delimit regions that they want to enhance, and region encoding might select the objects within the image that should be tracked. Intel s Digital Video Interactive (DVI) is based upon this concept, [65,66]. The image is analysed into regions, which are then also split into regions, and so on, until the regions can be mapped onto certain basic shapes to fit the required quality or bandwidth. The chosen shapes can be reproduced well at the decoder. The data sent is a description of the region tree ....

Arch Luther, Digital Video in the PC Environment, McGraw-Hill, 1990.

....network as an interconnect for a MM workstation allowing the use of multiple high bandwidth streams without significant contention on the resources. In conventional workstations, the bus bandwidth problem forces, for example, decompression to be performed on the same physical board as the device [Luther 89, Szabo 91] requiring hardware which is dedicated to each workstation. 4.1.3. Operating System MM applications must perform activities such as acquisition presentation, compression decompression and processing of continuous media within specified time constraints to guarantee the QoS required by ....

A. Luther, Digital Video in the PC Environment, McGraw Hill, New york, 1989

.... i Techniques for Multimedia Synchronization in Network File Systems 1 1 Introduction Future advances in networking and storage [2, 4] will make it feasible to design computer systems capable of offering services such as multimedia mail, news distribution, advertisement, and entertainment [6, 10]. Supporting such services requires the ability to capture multimedia objects digitally at their sources, transmit the objects to network file servers for storage, and later retrieve them for display at various destinations on the network. One of the unique features that distinguishes digital ....

A.C. Luther. Digital Video in the PC Environment. Chapters 3, 4, 5, and 6, pages 45--99, McGraw Hill, February 1989.

....applications require this level of service and include scientific visualization, image processing, and recording and play back of color video. The data rates required by some of these applications range from 1:2 megabytes second for DVI compressed video and 1:4 megabits second for CD quality audio [1], and up to 90 megabytes second for uncompressed full frame color video. Advances in VLSI, data compression, processors, communication networks, and storage capacity mean that systems capable of integrating continuous multimedia will soon emerge. In particular, the emerging ANSI fiber channel ....

A. C. Luther, Digital Video in the PC Environment. M c Graw-Hill, 1989.

.... DVI technology, which comprises a set of video and audio peripheral controller boards, each containing highperformance video and audio processors, large memories, and high level functions programmed in microcode such as pixel processing, polygon manipulation, and data compression decompression [Luther89]. At the highest level of abstraction in computer systems, we see the appearance of multi media applications already in the marketplace, such as those based on interactive CD ROM. These applications include hypertext programs, browsers for dictionaries and encyclopedias, and interactive games, ....

A.C. Luther, Digital Video in the PC Environment, McGraw Hill, New York, 1989.

....does incur some computational overhead for scheduling concurrent processes. Figure 2.11 suggests that prefetching and display processes can be viewed as a pipeline. Many continuous media players are organized as a pipeline of storage access, network transport, decoding and display processes [48, 4, 66, 13, 39]. Let us generalize the idea of prefetching to describe any decoupling of a computation into concurrent producer and consumer processes. By this definition, an interrupt driven process that reads from a 31 time prefetched consumed buffer full r p r c r p = r c r p r c Figure 2.12: Greedy ....

....competition for resources from other users, the performance of multimedia applications can be predictable. Even 35 with multi tasking, the scheduling of multimedia digital video and audio has been successfully achieved on single user systems by elevating the priority of the media handling tasks [48]. In a multi user environment, reservations have been used to guarantee the availability of resources for a real time application. Real time file systems have been designed that guarantee a lower bound on bandwidth for sequential access to a file [46, 61, 5] The RealTime Mach operating system ....

Luther, A. C. Digital Video in the PC Environment. McGraw-Hill, New York, 1989.

....network as an interconnect for a MM workstation allowing the use of multiple high bandwidth streams without significant contention on the resources. In conventional workstations, the bus bandwidth problem forces, for example, decompression to be performed on the same physical board as the device [Lut 89, Sza 91] requiring hardware which is dedicated to each workstation. 3.1.3 Operating System MM applications must perform activities such as acquisition presentation, compression decompression and processing of continuous media within specified time constraints to guarantee the QoS required by ....

A.Luther, Digital Video in the PC Environment, McGraw Hill, New york, 1989

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Luther, A.C. (1991). Digital Video in the PC Environment, 2nd edition. McGrawHill.

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Luther, A.C., 1991. Digital Video in the PC Environment, McGraw-Hill, Second Ed.

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Luther, A.C., 1991. Digital Video in the PC Environment, McGraw-Hill, Second Ed.

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Luther, A.C., 1990. "Digital Video in the PC Environment," McGraw-Hill, Second Ed.

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Luther, A.C., 1990. "Digital Video in the PC Environment," McGraw-Hill, Second Ed.

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