Kappa Sigma Clipping

Kappa Sigma Clipping
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卡帕西格玛剪裁

DOI:
10.54294/39qekn
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发表时间:
2006
期刊:
The insight journal
影响因子:
--
通讯作者:
G. Lehmann
G. Lehmann
中科院分区:
--
文献类型:
--
作者:
G. Lehmann

文献摘要

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相似文献

当图像主要由背景像素组成时,大多数自动阈值化方法无法产生相关阈值。这主要是因为在图像的直方图中,一种模式与另一种模式相比被过度表示。Kappa-Sigma裁剪是一种主要用于天文学的方法,它不会试图在直方图中分离2个模式,而是试图找到唯一可用模式的属性,即背景模式,并计算阈值以选择与背景显著不同的值。
When an image is mostly composed of background pixels, most of the automatic thresholding methods are failing to produce a relevant threshold. This is mainly caused because one mode is over represented compared to the other in the histogram of the image. The Kappa-Sigma clipping, a method largely used in astronomy, don’t try to separate 2 modes in the histogram, but rather try to find the properties of the only usable mode, the one of the background, and compute a threshold to select the values significantly different of the background.