@InProceedings{JourdanAlca:1994:PrCoIm,
author = "Jourdan, Marcelo Mollica and Alcaim, Abraham",
affiliation = "{Centro Cient{\'{\i}}fico Rio da IBM Brasil} and {Centro de
Estudos em Telecomunica{\c{c}}{\~o}es (CETUC) da
Pontif{\'{\i}}cia Universidade Cat{\'o}lica do Ri o de Janeiro
(PUC-Rio)}",
title = "Pr{\'e}-processamento em codifica{\c{c}}{\~a}o de imagens por
sub-bandas para redu{\c{c}}{\~a}o de irrelev{\^a}ncia visual",
booktitle = "Anais...",
year = "1994",
editor = "Freitas, Carla dal Sasso and Geus, Klaus de and Scheer,
S{\'e}rgio",
pages = "23--29",
organization = "Simp{\'o}sio Brasileiro de Computa{\c{c}}{\~a}o Gr{\'a}fica e
Processamento de Imagens, 7. (SIBGRAPI)",
publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
address = "Porto Alegre",
keywords = "irrelev{\^a}ncia visual, codifica{\c{c}}{\~a}o de imagens,
pr{\'e}-processamento de imagens, codificadores de imagens,
imagens por sub-bandas.",
abstract = "In low bit-rate coding of images, it has been show that
compression ratio can be greatly improved by eliminating
information irrelevant to the human eye. In this paper we describe
a technique for accomplishing this task. The image spectrum is
decomposed in 10 sub-bands and, for each band; blocks of pixels
are discarded if they do not satisfy thresholds of average energy.
The benefits of this technique are reduction of pixels to be coded
(typically to 15-50% of the original), low computational
complexity and very little side information generated.",
conference-location = "Curitiba, PR, Brazil",
conference-year = "9-11 Nov. 1994",
isbn = "978-85-7669-272-0",
language = "pt",
ibi = "8JMKD3MGPBW34M/3DD7AEE",
url = "http://urlib.net/ibi/8JMKD3MGPBW34M/3DD7AEE",
targetfile = "4 Pre processamento em codifica{\c{c}}{\~a}o de imagens por sub
bandas.pdf",
type = "Processamento de Imagens I",
volume = "1",
urlaccessdate = "2024, May 02"
}