Result Details

Improving Quality of Video Signals Encoded by 3D DCT Transform

FRÝZA, T. Improving Quality of Video Signals Encoded by 3D DCT Transform. In Proceedings ELMAR-2006. Zadar (Croatia): Croatian Society Electronics in Marine, 2006. p. 89-93. ISBN: 953-7044-03-3.
Type
conference paper
Language
English
Authors
Frýza Tomáš, doc. Ing., Ph.D., UREL (FEEC)
Abstract

This paper deals with the properties of a compression method based on the 3D DCT. During the video compression process with 3D DCT the image data are transformed into frequency domain and the cross-correlation between adjacent pixels and even between frames is being removed without any quality loss. By implementing the quantization and thresholding operations, the number of 3D DCT coefficients is reducing. The situation is even worse while a group of encoded frames contains several types of video sequences, i.e. the cut is presents. In decompressed sequence the disturbing cross-fade effect is perceptible. In the next text a method for removing this effect based on the 3D DCT coder modifications is described.

Keywords

Compression, video signal, 3D DCT, cross-fade effect elimination, improving quality

URL
Published
2006
Pages
89–93
Proceedings
Proceedings ELMAR-2006
Conference
48th International Symposium ELMAR-2006
ISBN
953-7044-03-3
Publisher
Croatian Society Electronics in Marine
Place
Zadar (Croatia)
BibTeX 
@inproceedings{BUT18552,
  author="Tomáš {Frýza}",
  title="Improving Quality of Video Signals Encoded by 3D DCT Transform",
  booktitle="Proceedings ELMAR-2006",
  year="2006",
  pages="89--93",
  publisher="Croatian Society Electronics in Marine",
  address="Zadar (Croatia)",
  isbn="953-7044-03-3",
  url="http://www.elmar-zadar.org/2006/"
}
Departments
Department of Radio Electronics (UREL)
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