Data compression systems for home-use digital video recording

Breeuwer, Marcel; Grinsven, P.A.M. van

doi:10.1109/49.124463

Cited by 13 publications

(3 citation statements)

References 48 publications

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“…Video coding algorithms for digital storage media must satisfy several requirements which often do not arise in other applications of video compression [3]. This is especially the case when * The work reported in this paper was carried out in the framework of the European RACE 2026 DART project and was sponsored by the European Community.…”

Section: Recording Requirementsmentioning

confidence: 99%

<title>Forward rate control for MPEG recording</title>

1993

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The MPEG video coding algorithm will be used in a large variety of video recording applications.A key constraint for video coding algorithms for consumer (tape) recorder applications is the bit stream editability requirement; i.e. it must be possible to replace N consecutive frames by N new consecutive frames on the storage media, using at most the same number of bits. In this paper this constraint is satisfied by the use of a forward rate control mechanism, such that each Group of Pictures (GoP) will be encoded using a fixed number of bits (within a tolerance margin to be minimized). The problem of performing a forward state allocation (quantizer step allocation) is limited to the picture level by performing a pre-allocation, assigning a fraction of the available bits to each of the frames of a GoP. The state allocation per picture amounts to the correct selection of the quantization step size for all slices. This is done by forming parametric models for both the rate (R) and the distortion (D), such that for a particular slice, the R-D curve can be predicted. Using the R-D curves of every slice of the picture, the state allocation can be performed. With the described algorithm the GoP rate error will be within 4% in the stationary mode; if a nonstationary mode that includes a re-allocation based on feedback information is added, the error will be within 1%.

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Section: Recording Requirementsmentioning

confidence: 99%

<title>Forward rate control for MPEG recording</title>

1993

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“…For a consumer tape recorder system, an important requirement is the availability of trick modi [2], i.e. still picture, slow motion, fast forward and fast playback (both forward and reverse).…”

Section: Mpeg Recording Requirementsmentioning

confidence: 99%

<title>Trick mode solutions for MPEG tape recording</title>

Frimout

Biemond

Lagendijk

1994

Visual Communications and Image Processing '94

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In this paper several formatting solutions with trick mode (fast forward, fast reverse) support for helical scan recording are proposed. First, two basic methods where the trick mode signal is built up from semi-random sections of the normal stream, will be discussed. These low complexity methods form the basis for the extension to more advanced solutions that employ a dedicated bit stream for trick modes. A method of formatting this dedicated trick stream on a recorder without phase lock between the scanner and the tape during fast forward is presented by means of three separate case studies. In order to guarantee that the trick mode stream is read at the chosen speed multiple copies of the same stream need to be placed at well chosen places on the tape. This solution is extremely attractive for systems where a limited number of speedup levels are required. Recorders that can perform phase locking during fast forward yield a particular advantage for high speed-up (n=1 2, 18, . . .) factors and allow for the support of more distinct speedup levels.

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“…Such video libraries are already available to commercial service providers. We expect that the digital storage of video material at home will soon overtake the current analog video cassette recording systems [9], [13], [16]- [18].…”

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confidence: 99%

Automated high-level movie segmentation for advanced video-retrieval systems

Hanjalic

Lagendijk

Biemond

1999

IEEE Trans. Circuits Syst. Video Technol.

243

142

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Abstract-We present a newly developed strategy for automatically segmenting movies into logical story units. A logical story unit can be understood as an approximation of a movie episode, which is a high-level temporal movie segment, characterized either by a single event (dialog, action scene, etc.) or by several events taking place in parallel. Since we consider a whole event and not a single shot to be the most natural retrieval unit for the movie category of video programs, the proposed segmentation is the crucial first step toward a concise and comprehensive contentbased movie representation for browsing and retrieval purposes. The automation aspect is becoming increasingly important with the rising amount of information to be processed in video archives of the future. The segmentation process is designed to work on MPEG-DC sequences, where we have taken into account that at least a partial decoding is required for performing content-based operations on MPEG compressed video streams. The proposed technique allows for carrying out the segmentation procedure in a single pass through a video sequence.Index Terms-Video content analysis, video data bases, video segmentation.

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Data compression systems for home-use digital video recording

Cited by 13 publications

References 48 publications

<title>Forward rate control for MPEG recording</title>

<title>Forward rate control for MPEG recording</title>

<title>Trick mode solutions for MPEG tape recording</title>

Automated high-level movie segmentation for advanced video-retrieval systems

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