@InProceedings{Queiroz:2007:ImReMa,
author = "Queiroz, Ricardo L. de",
affiliation = "{Universidade de Brasilia}",
title = "Improved Reversible Mapping from Color to Gray",
booktitle = "Proceedings...",
year = "2007",
editor = "Falc{\~a}o, Alexandre Xavier and Lopes, H{\'e}lio C{\^o}rtes
Vieira",
organization = "Brazilian Symposium on Computer Graphics and Image Processing, 20.
(SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "colro mapping, texturization.",
abstract = "In the reversible conversion of color images to gray ones, colors
are mapped to textures and from the textures the receiver can
recover the colors, i.e. one may print a color image with a black
and white printer and, at a later time, recover colors. Such a
method was originally devised using the wavelet transform and
replacing high-frequency subbands by subsampled chrominance
planes. Here, we propose to improve the original method thorugh
the use of a largely redundant representation of the chrominance,
with multiple embedding into subbands of a general subband
transform. Our results point to minimization of the variance of
the error caused by noise when the chrominance is replicated into
many subbands and not linearly combined. Derived noise bounds
guide us on how many subbands to embed the chrominance.
Experimental results were carried for multiple noise levels,
models, transform sizes, and number of embedding subbands,
demonstrating the theoretical analysis and the method's potential.
.",
conference-location = "Belo Horizonte, MG, Brazil",
conference-year = "7-10 Oct. 2007",
doi = "10.1109/SIBGRAPI.2007.7",
url = "http://dx.doi.org/10.1109/SIBGRAPI.2007.7",
language = "en",
ibi = "6qtX3pFwXQZG2LgkFdY/RmKLz",
url = "http://urlib.net/ibi/6qtX3pFwXQZG2LgkFdY/RmKLz",
targetfile = "colortobw-subbands-sibgrapi.pdf",
urlaccessdate = "2024, Apr. 28"
}