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  • Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați
  • Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics
  • Voir le document
  •   Accueil de DSpace
  • Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați
  • Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics
  • Voir le document
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Frequency Content Oriented Modification of Quantization Matrix in DCT-Based Compression

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ugal_f3_2006_nr3_Tarniceriu.pdf (413.6Ko)
Date
2006
Auteur
Tarniceriu, Daniela
Munteanu, Valeriu
Beldianu, Florin
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Résumé
In order to improve the compression rate for comparable values of error metrics, we propose a method to modify the standard quantization matrix used in JPEG, according to image frequency content. Unlike the method which allows varying levels of image compression and quality, by scaling all the elements in the quantization matrix by the same factor, we propose a way to modify differently the quantization step for low and high frequencies, respectively.
URI
http://10.11.10.50/xmlui/handle/123456789/3863
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  • Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics [230]

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