NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 3 of 3 (0.024 seconds)

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1

Contribution à la modélisation des propriétés photoréfractives des phases Bi12MO20 : M = Ge, Ti : cristallogénèse, dopage et étude des niveaux profonds par spectroscopie optique

Laulan Boudy, Caroline 23 November 1990 (has links) (PDF)
Des monocristaux de Bi12MO20 (M=GE, Ti) dopes et non dopes ont été élaborés par croissance czochralski et tssg. La caractérisation physico-chimique et optique de ces matériaux a été réalisée. La détermination des niveaux d'énergie localisée dans la bande interdite a été effectuée. nous proposons une hypothèse sur les mécanismes de l'effet photoréactif et nous explicitons une des applications optiques de cas matériaux.
Physique
Sciences des matériaux
Rhéologie
Croissance cristalline
Résonnance paramagnetique electronique
Niveaux profonds
Effets photoréactifs
2

Komprese videa v obvodu FPGA / Implementation of video compression into FPGA chip

Tomko, Jakub January 2014 (has links)
This thesis is focused on the compression algorithm's analysis of MJPEG format and its implementation in FPGA chip. Three additional video bitstream reduction methods have been evaluated for real-time low latency applications of MJPEG format. These methods are noise filtering, inter-frame encoding and lowering video's quality. Based on this analysis, a MJPEG codec has been designed for implementation into FPGA chip XC6SLX45, from Spartan-6 family.
3

Analýza kvality obrazu v digitálních televizních systémech / Picture Quality Analysis in Digital Television Systems

Bednarz, Robin January 2009 (has links)
Diploma thesis deals with the analysis of quality in digital television systems and contains theoretical description of subjective and objective assessment of quality picture methods. The thesis contains short-term and long-term analysis of quality picture of terrestrial television DVB-T. Measurements and experimentations were carried out with the help of Rohde&Schwarz DVQ analyzer of picture quality and software MPEG-2 Quality Monitor and MPEG-2 Elementary stream analyzer.

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