JHelioviewer: Open-Source Software for Discovery and Image Access in the Petabyte Age (Invited)

Details JHelioviewer: Open-Source Software for Discovery and Image Access in the Petabyte Age (Invited) JHelioviewer: Open-Source Software for Discovery and Image Access in the Petabyte Age (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh22a..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH22A-05

Astronomy and Astrophysics

Astrophysics

[1916] Informatics / Data And Information Discovery, [1976] Informatics / Software Tools And Services, [1994] Informatics / Visualization And Portrayal, [7500] Solar Physics, Astrophysics, And Astronomy

Scientific paper

The unprecedented torrent of data returned by the Solar Dynamics Observatory is both a blessing and a barrier: a blessing for making available data with significantly higher spatial and temporal resolution, but a barrier for scientists to access, browse and analyze them. With such staggering data volume, the data is bound to be accessible only from a few repositories and users will have to deal with data sets effectively immobile and practically difficult to download. From a scientist's perspective this poses three challenges: accessing, browsing and finding interesting data while avoiding the proverbial search for a needle in a haystack. To address these challenges, we have developed JHelioviewer, an open-source visualization software that lets users browse large data volumes both as still images and movies. We did so by deploying an efficient image encoding, storage, and dissemination solution using the JPEG 2000 standard. This solution enables users to access remote images at different resolution levels as a single data stream. Users can view, manipulate, pan, zoom, and overlay JPEG 2000 compressed data quickly, without severe network bandwidth penalties. Besides viewing data, the browser provides third-party metadata and event catalog integration to quickly locate data of interest, as well as an interface to the Virtual Solar Observatory to download science-quality data. As part of the Helioviewer Project, JHelioviewer offers intuitive ways to browse large amounts of heterogeneous data remotely and provides an extensible and customizable open-source platform for the scientific community.

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