A Streaming Piecewise-Constant Model
نویسنده
چکیده
The piecewise-constant image model (PWC) is remarkably effective for compressing palette images. This paper discloses a new streaming version of PWC that retains the excellent compression efficiency of the original algorithm while dramatically enhancing compression performance. Further, compression throughput is made more constant, making it possible to code sparse images very quickly.
منابع مشابه
FGS MPEG-4 Video Streaming with Constant-Quality Rate Adaptation, Prioritized Packetization and Di erentiated Forward
A video streaming solution with the ner granular scalable (FGS) MPEG-4 stream delivered over prioritized networks is investigated in this work. An optimal truncation strategy for constant-quality rate adaptation is rst presented by embedding the rate-distortion (R-D) information based on a piecewise linear R-D model. Then, the video stream is prioritized for di erentiated dropping and forwardin...
متن کاملConstant quality rate control for streaming MPEG-4 FGS video
This paper presents a constant quality video rate control (CQVRC) scheme for MPEG-4 FGS (fine-grain scalability) video. The proposed scheme can mitigate quality variations among consecutive frames during the period when there is significant change in the video source or the transmission bandwidth. CQVRC utilizes both non-scalable base layer (BL) and scalable enhancement layer (EL) of MPEG-4 for...
متن کاملHYBRID FUNCTIONS APPROACH AND PIECEWISE CONSTANT FUNCTION BY COLLOCATION METHOD FOR THE NONLINEAR VOLTERRA-FREDHOLM INTEGRAL EQUATIONS
In this work, we will compare two approximation method based on hybrid Legendre andBlock-Pulse functions and a computational method for solving nonlinear Fredholm-Volterraintegral equations of the second kind which is based on replacement of the unknown functionby truncated series of well known Block-Pulse functions (BPfs) expansion
متن کاملPredicting the Efficiency of Decision-Making Unit by Using Piecewise Polynomial Extrapolation in Different Times
In this article, we will estimate efficiency amountof decision-making unit by offering the continuous piecewise polynomialextrapolation and interpolation by CCR model input-oriented on the assumptionthat it is constant returns to scale in different times. And finally, we willestimate efficiency amount of decision-making unit indifferent times byoffering an example.
متن کامل