arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.0442astro-ph.IMastro-ph.COcs.MMphysics.data-an
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替代天文FITS成像

Alternative Astronomical FITS imaging

Eleni E. Varsaki, Nectaria A. B. Gizani, Vassilis Fotopoulos, Athanassios N. Skodras

摘要:

天文射电图主要以FITS格式提供。天文图像处理软件(AIPS)使用一组附加到输出地图的表格,以包括与图像生成有关的各种信息。然而,一旦从AIPS中提取了FITS或其他格式的射电源图像,该信息以及关于地图的通量和噪声的信息就丢失了。这些信息对于另一个天文学家来说是很有价值的,例如,他只是使用NED下载地图。在目前的工作中,我们展示了一种隐藏在无线电地图中的数据的方法,该方法可以在变换下保留,即使地图的格式从适合改为其他无损的可用图像格式。

英文摘要:

Astronomical radio maps are presented mainly in FITS format. Astronomical Image Processing Software (AIPS) uses a set of tables attached to the output map to include all sorts of information concerning the production of the image. However this information together with information on the flux and noise of the map is lost as soon as the image of the radio source in fits or other format is extracted from AIPS. This information would have been valuable to another astronomer who just uses NED, for example, to download the map. In the current work, we show a method of data hiding inside the radio map, which can be preserved under transformations, even for example while the format of the map is changed from fits to other lossless available image formats.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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