Material
Abstract
Image analysis and enhancement tasks such as tone mapping, colorization, stereo depth, and photomontage, often require computing a solution (e.g., for exposure, chromaticity, disparity, labels) over the pixel grid. Computational and memory costs often require that a smaller solution be run over a downsampled image. Although general purpose upsampling methods can be used to interpolate the low resolution solution to the full resolution, these methods generally assume a smoothness prior for the interpolation. We demonstrate that in cases, such as those above, the available high resolution input image may be leveraged as a prior in the context of a joint bilateral upsampling procedure to produce a better high resolution solution. We show results for each of the applications above and compare them to traditional upsampling methods.
BibTeX
@article{Kopf2007JointBilateralUpsampling,
acmid = {1276497},
address = {New York, NY, USA},
articleno = {96},
author = {J. Kopf and M. Cohen and D. Lischinski and M. Uyttendaele},
doi = {10.1145/1276377.1276497},
issn = {0730-0301},
issue_date = {July 2007},
journal = {ACM Transactions on Graphics},
keywords = {bilateral filter, upsampling},
month = {jul},
number = {3},
publisher = {ACM},
title = {Joint Bilateral Upsampling},
url = {http://johanneskopf.de/publications/jbu/index.html},
volume = {26},
year = {2007},
}