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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
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  •   DSpace Principal
  • 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
  • Ver ítem
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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 (413.6Kb)
Fecha
2006
Autor
Tarniceriu, Daniela
Munteanu, Valeriu
Beldianu, Florin
Metadatos
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Resumen
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
Colecciones
  • Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics [230]

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