Сжатие видео - 2-3 pull down
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Английские материалы |
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| Авторы | Название статьи | Описание | Рейтинг |
| Judder-free video on PCs | G.de Haan |
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| R.J. Schutten and G. de Haan Philips Research Laboratories, Eindhoven, The Netherlands | REAL-TIME 2–3 PULL-DOWN ELIMINATION APPLYING MOTION ESTIMATION/COMPENSATION IN A PROGRAMMABLE DEVICE |
ABSTRACT A software package realizes real-time video processing on a commercially available programmable device1. The software implements a motion estimator and a picture rate convertor to provide judder-free display of movie material broadcast in 2–3 pull-down mode. A new object-based true-motion estimation algorithm efficiently uses the VLIW core of the processor. It permits quasi-simultaneous motion estimation/segmentation for a fixed maximum number of objects. RAR 127 кбайт |
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| G. de Haan R.J. Schutten | Real-time 2{3 Pull-down elimination applying motion estimation/compensation on a programmable device |
Picture sequences come in various picture rates. Movie material in 24, 25, and 30 Hz, and video usu- ally in 50 and 60 Hz. The simple picture rate con- vertors repeat pictures until the next arrives, which results in blur and/or judder when motion occurs. These e ects can be eliminated if the motion is known. Motion Estimation (ME), however, has only recently reached a quality and price level that en- abled introduction in consumer equipment [2]. This paper shows new progress, introducing ME and MC (motion compensation), for judder elimination of 60 Hz TV movies, as a software package that runs real time on a programmable platform1 [1]. Earlier, de- interlacing and movie detection on this CPU has been reported [4]. The new concept is an extension of that work applicable in high end TVs and broadcast PCs. RAR 128 кбайт |
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| G.de Haan | Video Format Conversion |
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| A. Pelagotti and G. de Haan Philips Research Laboratories Prof. Holstlaan 4 5656 AA Eindhoven (NL) | High Quality Video on MultiMedia PCs |
Abstract Displaying broadcast video on a MultiMedia PC, implies the use of video format conversion (VFC) techniques, as computer displays and television receivers use quite distinct scanning rasters. VFC consists of spatial scaling, deinterlacing and picture rate conversion. Although scaling is rather straightforward, the other two tasks are far from trivial, and advanced motion compensated interpolation techniques are necessary to achieve a performance level that can compete with that of a standard TV. This paper discusses the options for picture rate conversion, and shows how even advanced motion compensated algorithms can run real time on a currently available programmable device. section 3 provides the details on the proposed algorithm. We evaluate the proposal in section 4, and we draw our conclusion in section 5. RAR 159 кбайт |
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| A. Pelagotti and G. de Haan Philips Research Laboratories Prof. Holstlaan 4 5656 AA Eindhoven (NL) | High quality picture rate up-conversion for video on TV and PC |
Abstract To interface broadcast video and a high-end TV, or a PC, display, the original sequence often needs to be upconverted to a higher picture rate. To achieve a good motion portrayal in the up-converted sequence, motion compensated interpolation techniques are necessary. But at boundaries of moving objects, where either covering or uncovering of background occurs (occlusion areas), wrong values are likely in the motion vectors, and in the up-converted pictures. This leads to visible and annoying artefacts. This paper presents two methods to deal with occlusion areas, designed for a high quality interpolation and a low complexity. RAR 1340 кбайт |
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| G. de Haan | Video display format conversion |
Abstract: High quality video format converters apply motion estimation and motion compensation to prevent judder, resulting from picture rate conversion, and alias, due to de-interlacing, in sequences with motion. Although initially considered being too expensive, high quality conversion is now economically feasible, and since 1995 available in consumer television ICs. This paper addresses the issues in format conversion and shows recent progress, introducing a new high quality video format conversion IC for consumer applications. RAR 1042 кбайт |
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| R.B. Wittebrood and G. de Haan, Philips Research Laboratories, Eindhoven, The Netherlands | SECOND GENERATION DSP SOFTWARE FOR PICTURE RATE CONVERSION |
Great progress has recently been made in motion estimation (ME). This has led to a high-quality secondgeneration scan-rate conversion (SRC) algorithm which runs on a commercially available programmable platform1. The new system has a higher quality of motion estimation/ compensation and de-interlacing than the first generation. The paper presents the new algorithm, and highlights the advances in performance. RAR 161 кбайт |
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| R.J. Schutten and G. de Haan Philips Research Laboratories, Eindhoven, The Netherlands | REAL-TIME 2–3 PULL-DOWN ELIMINATION APPLYING MOTION ESTIMATION/COMPENSATION IN A PROGRAMMABLE DEVICE |
A software package realizes real-time video processing on a commercially available programmable device1. The software implements a motion estimator and a picture rate convertor to provide judder-free display of movie material broadcast in 2–3 pull-down mode. A new object-based true-motion estimation algorithm efficiently uses the VLIW core of the processor. It permits quasi-simultaneous motion estimation/segmentation for a fixed maximum number of objects. RAR 127 кбайт |
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Подготовили Сергей Гришин и Дмитрий Ватолин