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arXiv 2411.00281cs.CVeess.IV

长波红外(LWIR)高光谱视频序列数据中气体羽流的检测与跟踪

Detection and tracking of gas plumes in LWIR hyperspectral video sequence data

California State University Long Beach(加州州立大学长滩分校);University of California Los Angeles(加州大学洛杉矶分校);Harvey Mudd College(哈维穆德学院)

Torin Gerhart, Justin Sunu, Ekaterina Merkurjev, Jen-Mei Chang, Jerome Gilles, Andrea L. Bertozzi

AI总结:

针对气体羽流扩散特性导致的分割难题,该研究提出结合PCA降维与Midway直方图均衡化的高光谱视频预处理方法,并对比了K-means、谱聚类等多种聚类算法的羽流分割效果。

摘要:

化学羽流的自动检测是一项分割难题。由于气云具有扩散特性,气体羽流的分割问题难度较高。与传统RGB图像相比,在气体羽流检测问题中使用高光谱图像的优势在于其包含非视觉数据,可提供更丰富的信息表征。\n本文提出了一种对含化学羽流的高光谱视频序列进行可视化的有效方法,并研究了分割技术在这些后处理视频上的效果。我们的方法结合降维与直方图均衡化,对高光谱视频进行预处理以适配分割任务。首先,采用主成分分析(Principal Components Analysis, PCA)对整个视频序列降维:将每个像素投影到前几个主成分上,生成一类光谱滤波器。接着,使用Midway直方图均衡化方法,重新分布强度值以减少帧间闪烁,从而为这些高维视频序列适配更传统的分割技术做好充分准备。\n我们对比了多种聚类技术正确分割化学羽流的能力,包括K-means、谱聚类(spectral clustering)以及金兹堡-朗道泛函(Ginzburg-Landau functional)。

英文摘要:

Automated detection of chemical plumes presents a segmentation challenge. The segmentation problem for gas plumes is difficult due to the diffusive nature of the cloud. The advantage of considering hyperspectral images in the gas plume detection problem over the conventional RGB imagery is the presence of non-visual data, allowing for a richer representation of information. In this paper we present an effective method of visualizing hyperspectral video sequences containing chemical plumes and investigate the effectiveness of segmentation techniques on these post-processed videos. Our approach uses a combination of dimension reduction and histogram equalization to prepare the hyperspectral videos for segmentation. First, Principal Components Analysis (PCA) is used to reduce the dimension of the entire video sequence. This is done by projecting each pixel onto the first few Principal Components resulting in a type of spectral filter. Next, a Midway method for histogram equalization is used. These methods redistribute the intensity values in order to reduce flicker between frames. This properly prepares these high-dimensional video sequences for more traditional segmentation techniques. We compare the ability of various clustering techniques to properly segment the chemical plume. These include K-means, spectral clustering, and the Ginzburg-Landau functional.

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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