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| Paper: |
IMAGE EXPLORER: Astronomical Image Analysis on an HTML5-based Web Application |
| Volume: |
485, Astronomical Data Analysis Software and Systems XXIII |
| Page: |
417 |
| Authors: |
Gopu, A.; Hayashi, S.; Young, M. D. |
| Abstract: |
Large datasets produced by recent astronomical imagers cause the
traditional paradigm for basic visual analysis – typically downloading
one's entire image dataset and using desktop clients like DS9, Aladin,
etc. – to not scale, despite advances in desktop computing power and
storage. This paper describes Image Explorer, a web framework that
offers several of the basic visualization and analysis functionality
commonly provided by tools like DS9, on any HTML5 capable web browser on
various platforms. It uses a combination of the modern HTML5 canvas, JavaScript, and several layers of lossless PNG tiles producted from the FITS image data. Astronomers are able to rapidly and simultaneously
open up several images on their web-browser, adjust the intensity
min/max cutoff or its scaling function, and zoom level, apply
color-maps, view position and FITS header information, execute typically
used data reduction codes on the corresponding FITS data using the FRIAA
framework, and overlay tiles for source catalog objects, etc. |
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