Concept
First quantization
Related publications (8)
Finite-Level Quantization Procedures for Construction and Decoding of Polar Codes
We consider finite-level, symmetric quantization procedures for construction and decoding of polar codes. Whether polarization occurs in the presence of quantization is not known in general. Hassani and Urbanke have shown that a simple three-level quantiza ...
2020Optimized Quantization in Distributed Graph Signal Filtering
Pascal Frossard, Isabela Cunha Maia Nobre
Distributed graph signal processing algorithms require the network nodes to communicate by exchanging messages in order to achieve a common objective. These messages have a finite precision in realistic networks, which may necessitate to implement message ...
2019Geometry-driven quantization for omnidirectional image coding
Pascal Frossard, Francesca De Simone
In this paper we propose a method to adapt the quantization tables of typical block-based transform codecs when the input to the encoder is a panoramic image resulting from equirectangular projection of a spherical image. When the visual content is project ...
2016Polariton polarization-sensitive phenomena in planar semiconductor microcavities
From a theoretical point of view, we discuss a variety of phenomena linked to the spin and polarization degree of freedom of exciton-polaritons in semiconductor microcavities. We start with linear optical effects including the optical spin Hall effect, for ...
2010Space-frequency quantization for image compression with directionlets
Martin Vetterli, Vladan Velisavljevic
The standard separable 2-D wavelet transform (WT) has recently achieved a great success in image processing because it provides a sparse representation of smooth images. However, it fails to efficiently capture 1-D discontinuities, like edges or contours. ...
2007Oversampled A/D Conversion of Non-Bandlimited Signals with Finite Rate of Innovation
We consider the problem of A/D conversion for non-bandlimitedsignals that have a finite rate of innovation, in particular, theclass of continuous periodic stream of Diracs, characterized by aset of time positions and weights. Previous research has onlycons ...
2004Adaptive scalar quantization without side information
In this paper, we introduce a novel technique for adaptive scalar quantization. Adaptivity is useful in applica- tions, including image compression, where the statistics of the source are either not known a priori or will change over time. Our algorithm us ...
1997Accelerometer - enhanced speed estimation for linear - drive machine tool axes
Machine-tool axes for high-speed machining make great demands on the mechanical system, the actuators, and the numerical control. They require a high stiffness, a high bandwidth, and a precise motion at maximum speed. Linear motors as direct drives for mac ...
EPFL1996