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échelon de quantification

quantization step

électronique et électrotechnique - iate.europa.eu

Un DAC génère une tension de polarisation avec un petit échelon de quantification, fournissant en outre une granularité fine de contrôle du gain.

A DAC generates a bias voltage with a small quantization step, additionally providing a fine granularity of gain control.

électronique et électrotechnique - wipo.int

Les coefficients de correction sont réglés de façon à s'inscrire dans la gamme de quantification définie par la taille de l'échelon de quantification utilisé pendant le codage.

The correction coefficients are adjusted to be within the quantization range of the quantization step size used during the coding process.

informatique et traitement des données - wipo.int

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Image compression by perceptual vector quantization... Because of its structure, the vector quantizer can be implemented efficiently as a uniform product vector quantizer using a variable quantization step...

général - core.ac.uk - PDF: citeseerx.ist.psu.edu

Research on applied technology in blind and shape-preserving watermarking of vector map data using variable quantization stepfidelity; robustness Abstract: This paper explored the applied technology in vector map data watermarking and proposes a blind and shape-preserving watermarking model by inserting the watermark information into the curve shape characteristic set using quantized index modulation (QIM) based on variable quantization step...

PDF: www.scientific.net

On error-rate characteristics of oversampled a/d conversionimproved by refining either sampling interval or quantization step...

PDF: citeseerx.ist.psu.edu

Transcoding method for regions of interest... Then, a proposed method assigns a specific quantization step-size differentially according to the ROI within a video...

PDF: citeseerx.ist.psu.edu

A transcoding method for improving the subjective picture quality... In the proposed method, the quantization step-size obtained by the homogeneous or heterogeneous approach is reassigned to improve the subjective picture quality...

PDF: paper.ijcsns.org

échelon de quantification

quantisation step

électronique et électrotechnique - iate.europa.eu

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The effect of signal digitisation in cmb experimentsSignal digitisation may produce significant effects in balloon - borne orspace CMB experiments, since the limited bandwidth for downlink of datarequires imposes a large quantisation step q applied on board by the instrumentacquisition chain...

général - core.ac.uk - PDF: arxiv.org

Nonlinear predictive rate control for constant bit rate mpeg video coders... The quantiser control surfaces based on nonlinear equations, which map both estimated and current buer occupancies to a suit-able quantisation step size, have also been used to achieve quicker responses to dramatic video rate variation...

PDF: mirlab.org

Subjective assessment of impairment in scale-space-coded images... Category scaling of impairment and category scaling of differences ill impairment, created by presenting the images according to a factorial design as dictated by Functional MeiUlurement Tileory, gave the same monotone S-shaped relation between impairment and size of the quantisation step...

PDF: www.loc.gov

Codebook-free exemplar models for object detection... Recently codebook-free methods that avoid the vector-quantisation step have become more popular...

PDF: citeseerx.ist.psu.edu

Linear real-time rate control... This work investigated the relationship of bit rate and distortion with MB quantisation step size and these factors...

PDF: www.scopus.com