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- #Jhelioviewer java movie
- #Jhelioviewer java software
- #Jhelioviewer java code
- #Jhelioviewer java iso
- #Jhelioviewer java series
In other words, the system generates only the part of the image you really want to see.
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Also, JPEG2000 can extract sub-regions of the compressed image file without having to open the whole file. Then Helioviewer met JPEG2000, a standard for compressing images to make them extremely small while maintaining very good image quality. Each tile is a separate file, and they all have to be labeled, stored, and pulled from storage and assembled when needed. The trouble is, as you zoom in it requires an ever-increasing number of small tiles (numbering in the hundreds) to build the new image. The system retrieved the tiles it needed to build the view requested by the user with every click of the mouse. In the prototype of, each stage of a zoom-in required a complete set of tiles. “Google Maps was the original inspiration for it,” Helioviewer Project co-founder Jack Ireland says. The prototype of Helioviewer took this approach, too, following Google’s lead. Google Maps and Google Earth overcame this issue by “tiling” large images into a checkerboard of smaller segments that could be quickly assembled into an image at the scale a user requested. SDO sends down images that are 4,000 by 4,000 pixels, approximately the same number of pixels as in a 13 by 13 inch photographic print. This is particularly challenging when working with high-resolution images from NASA’s Solar Dynamics Observatory. The challenge was this: How do you acquire and manipulate solar images quickly enough so that the process is truly “real time,” without long waiting times for downloads and glacial refresh rates on the image view every time you make a change, like zooming in on a feature of interest? But there is also a critical data-processing “back end” that required just as much effort to develop.
#Jhelioviewer java software
The Web app and the JHelioviewer software are the on-screen interfaces that users see.
#Jhelioviewer java movie
If request parameters `verbose` is set to `true` and `jpip` is omitted or set to `false`, the reponse is a JSON object containing an HTTP-protocol link to the JPX movie plus the timestamps of each frame a message if the value of `cadence` was overridden by the server.The Solar Dynamics Observatory beams data to Earth at a rate of 150 Mb per second. If no cadence is specified, the server will attempt to select an optimal cadence.
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The desired amount of time (in seconds) between each frame in the movie. Optionally return a JPIP URI string instead of the binary data of the movie itself, or instead of an HTTP URI in the JSON response (if `verbose` is set to `true`). If set to `true,` the JSON response will include timestamps for each frame in the resulting movie and any warning messages associated with the request, in addition to the JPX movie file URI.
#Jhelioviewer java series
Currently, only JPX image series support this feature.
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Generate a `linked` JPX file containing image pointers instead of data for each individual frame in the series. Can be specified in lieu of the `observatory`, `instrument`, `detector`, and `measurement` parameters.
#Jhelioviewer java iso
ISO 8601 combined UTC date and time UTC format. ISO 8601 combined UTC date and time UTC format.ĭate/Time for the end of the JPX movie data. Request Parameters: Parameterĭate/Time for the beginning of the JPX movie data. Generate and (optionally) download a custom JPX movie of the specified datasource.Įither `sourceId` must be specified, or the combination of `observatory`, `instrument`, `detector`, and `measurement`.
#Jhelioviewer java code
Please contact the source code providers if you suspect an error in the source code.įull source code for the entire Helioviewer Project can be found at. HVS (Helioviewer setup) file used to create this JP2 file: hvs_version5.pro (version 5.0).įITS to JP2 source code provided by ESA/NASA Helioviewer Project [contact the Helioviewer Project at and is available for download at. JP2 file created locally at Lockheed LMSAL using hv_aia_list2jp2_gs2 at Wed May 25 02:27:24 2011.Ĭontact Helioviewer LMSAL Franchise for more details/questions/comments regarding this JP2 file. Bazaar not installed? Using HV_WRITTENBY manually included revision number: 84 : % SPAWN: Error managing child process.: No such file or directory Sdo.fds_orbit_vectorsįITSHEAD2STRUCT run at: Wed May 25 02:27:23 2011įITS (Flexible Image Transport System) format is defined in 'AstronomyĪnd Astrophysics', volume 376, page 359 bibcode: 2001A&A.376.359H Example (A): string (XML) Example Request: Example Response: