منابع مشابه
Scalable Internet video using MPEG-4
Real-time streaming of audio-visual content over Internet Protocol (IP) based networks has enabled a wide range of multimedia applications. An Internet streaming solution has to provide real-time delivery and presentation of a continuous media content while compensating for the lack of Quality-of-Service (QoS) guarantees over the Internet. Due to the variation and unpredictability of bandwidth ...
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This paper presents a scalable rate control (SRC) scheme based on a more accurate second-order rate-distortion model. A sliding-window method for data selection is used to mitigate the impact of a scene change. The data points for updating a model are adaptively selected such that the statistical behavior is improved. For video object (VO) shape coding, we use an adaptive threshold method to re...
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Dynamic behavior of the Internet’s transmission resources makes it difficult to provide perceptually good quality of streaming video. MPEG-4 Fine-Grained Scalable coding is proposed to deal with this problem by distributing the data in enhancement layers over a wide range of bit rates. However, encoded video also exhibits significant data rate variability to provide a consistent quality video. ...
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The universal scalability, which integrates different types of scalabilities and consequently provides a large scaling range for each codec parameter, is of high interests to the applications in the current heterogeneous surroundings. In our previous work, an MPEG-4 universal scalable codec basing on a layered path-tree structure [1,2] has been addressed, in which a video layer and the coding o...
متن کاملQuality Assessment of the MPEG-4 Scalable Video CODEC
In this paper, the performance of the emerging MPEG-4 SVC CODEC is evaluated. In the first part, a brief introduction on the subject of quality assessment and the development of the MPEG-4 SVC CODEC is given. After that, the used test methodologies are described in detail, followed by an explanation of the actual test scenarios. The main part of this work concentrates on the performance analysi...
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ژورنال
عنوان ژورنال: Signal Processing: Image Communication
سال: 1999
ISSN: 0923-5965
DOI: 10.1016/s0923-5965(99)00026-0