quantization


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quantization

[‚kwän·tə′zā·shən]
(communications)
Division of the range of values of a wave into a finite number of subranges, each of which is represented by an assigned or quantized value within the subrange.
(quantum mechanics)
The restriction of an observable quantity, such as energy or angular momentum, associated with a physical system, such as an atom, molecule, or elementary particle, to a discrete set of values.
The transition from a description of a system of particles or fields in the classical approximation where canonically conjugate variables commute, to a description where these variables are treated as noncommuting operators; quantization (first definition) is a result of this procedure.
(science and technology)
The restriction of a variable to a discrete number of possible values; thus the age of a person is usually quantized as a whole number of years.

quantization

(1) The division of a range of values into a single number, code or classification. For example, class A is 0 to 999, class B is 1000 to 9999 and class C is 10000 and above.

(2) In analog to digital conversion, the assignment of a number to the amplitude of a wave. The larger the range of numbers, the finer the increments can be measured, and the more the digital sample represents the analog signal. See sampling and quantization error.
References in periodicals archive ?
Along with distortion, we use Signal to Quantization Noise Ratio for the performance estimation [1]-[3]
In this section, we describe some existing quantization approaches and discuss why the performance of those approaches is not satisfactory in terms of the bit mismatch rate and the key generate rate.
Next, the baseline DSMC will be updated with the predicted ADC imprecisions to make the controller more robust against sampling and quantization imprecisions.
i] is denoted the quantization cell, where [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].
Neural-gas' network for vector quantization and its application to time-series prediction," IEEE Transactions on Neural Networks, vol.
In multiplierless-based schemes, if data are quantized with integer format, the length of the internal signals is significantly lower than in the case of multiplier-based topology, even if the later uses integer quantization, too.
Piva shows that, the performance of STDM watermarking [5] in the presence of two important classes of non-additive attacks, such as the gain attack with noise addition, and the quantization attack are evaluated.
After the abstracted quantization processing and contour extraction, we overlap the extracted contour line with quantized image, and the color space of acquired image is converted from space to RGB space.
As of this date, the satellites of Pluto actually offer the best test of QCM and its quantization of angular momentum per unit mass prediction.
In this paper the histogram equalization and the successive mean quantization transform methods for contrast enhancement of a low dynamic range image were evaluated and a comparison with an HDR--camera was shown.
Complete quantization feature: fitness value is only 0 or 1, and there is no intermediate and accumulation relation between the design variables and the objective value.
Among the non-transformed approaches Vector Quantization [2] based techniques encodes a sequence of samples rather than encoding a sample and automatically exploits both linear and non-linear dependencies.