This article has been cited
17
times
in Scopus:
(Showing the 2 most recent)
Nakashima, N.
,
Shimizu, S.
,
Okamura, K.
Development of a broadband telemedical network based on internet protocol in the Asia-Pacific region
(2007)
Methods of Information in Medicine
Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, United Kingdom
Abstract
In this paper, we seek to provide an introduction
to the fast-moving field of digital video on the Internet, from the
viewpoint of the biological microscopist who might wish to store or
access videos, for instance in image databases such as the BioImage
Database (http://www.bioimage.org). We describe and evaluate the
principal methods used for encoding and compressing moving image data
for digital storage and transmission over the Internet, which involve
compromises between compression efficiency and retention of image
fidelity, and describe the existing alternate software technologies for
downloading or streaming compressed digitized videos using a Web
browser. We report the results of experiments on video microscopy
recordings and three- dimensional confocal animations of biological
specimens to evaluate the compression efficiencies of the principal
video compression-decompression algorithms (codecs) and to document the
artefacts associated with each of them. Because MPEG-1 gives very high
compression while yet retaining reasonable image quality, these studies
lead us to recommend that video databases should store both a
high-resolution original version of each video, ideally either
uncompressed or losslessly compressed, and a separate edited and highly
compressed MPEG-1 preview version that can be rapidly downloaded for
interactive viewing by the database user.