![]() ![]() ![]() ![]() The software integrates solar event data and a time lineĭisplay. Real time, track features on the Sun and interactively overlay magnetic fieldĮxtrapolations. They can perform basic image processing in With JHelioviewer, users can visualise the Sun for any time periodīetween September 1991 and today. JHelioviewer software is open source, platform independent and extendable via a To the challenge of efficiently browsing petabyte-scale image archives. The JPEG2000 standard offers useful new features that facilitate theĭissemination and analysis of high-resolution image data and offers a solution Release of JHelioviewer, the scientific functionality of the software has beenĮxtended significantly, and the objective of this paper is to highlight these Visualisation tool for solar data based on the JPEG2000 compression standardĪnd part of the open source ESA/NASA Helioviewer Project. To address these challenges, we have developed JHelioviewer, a From a scientist's perspective this poses three problems:Īccessing, browsing and finding interesting data as efficiently as possible.Īims. To download practically due to their size and download data rates available to In particular, the large volume of SDO data presentsĬhallenges: it is available only from a few repositories, and full-disk,įull-cadence data for reasonable durations of scientific interest are difficult Wealth of data, covering large time ranges, multiple viewpoints, and returning Solar observatories are providing the world-wide community with a Mueller and 11 other authors Download PDF Abstract: Context. This poster will illustrate the new and expanded functionality of JHelioviewer and highlight the advantages of JPEG 2000 as a new compression standard for solar image data.Download a PDF of the paper titled JHelioviewer - Time-dependent 3D visualisation of solar and heliospheric data, by D. Currently focused on solar physics data, JHelioviewer can easily be adapted for use in other areas of space and earth sciences. The random code stream access of JPIP minimizes data transfer by streaming image data in a region-of-interest and quality-progressive way, while OpenGL enables rapid hardware-accelerated image processing and rendering. JHelioviewer uses the JPEG 2000 Interactive Protocol (JPIP) and OpenGL. JHelioviewer is a cross-platform application that offers movie streaming, real-time frame-by-frame image processing, feature/event overlays and will enable users to access SDO science data via a VSO interface. JHelioviewer will make the vast amount of SDO images available to the worldwide community in this format, which is already being used for all SOHO images. JHelioviewer Project documentation and source code is available on GitHub. Using the very efficient lossy compression mode of JPEG 2000, a full-size SDO image can be compressed to 1 MByte at good visual quality for browsing purposes. The JHelioviewer user manual is available here. To address this challenge, we have developed JHelioviewer, a JPEG 2000-based visualization and discovery software for solar image data. For SDO, the former approach is prohibitive due to the shear data volume, while the latter does not do justice to the high resolution and cadence of the images. So far, the tools available to the scientific community either require downloading all potentially relevant data sets beforehand in their entirety or provide only movies with a fixed resolution and cadence. In order to fully exploit their data, scientists need to be able to browse and visualize many different data products spanning a large range of physical length and time scales. Space missions generate an ever-growing amount of data, as impressively highlighted by the Solar Dynamics Observatory's (SDO) expected return of 1.4 TByte/day. ![]()
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