Extended-Linear Hyperspectral Mixing Models

Ajit Banerjee, Hsuan Ren, James Jensen

研究成果: 雜誌貢獻會議論文同行評審

2 引文 斯高帕斯(Scopus)


A mixture model for hyperspectral data describes the underlying physics of how constituent substances in a scene affect each other to produce radiance received at each detector pixel. In the linear models the total scene is portrayed as a checkerboard mixture of reflecting surfaces containing fractional abundances of the constituent substances. The radiance measured at a detector pixel is modeled proportional to the same abundance of the constituents where interference (interaction) between constituent substances is neglected. In this paper we present a model to account for a multiple reflection process whereby the measured radiation is the result of multiple inelastic interactions (scattering or reflection) among the constituent components in the scene. While this process is inherently non-linear, and we have constructed an equivalent "extended" linear version of the model, which yields the effective abundance of the end members in the scene. This model seamlessly reduces to the conventional linear model when multiple scattering is absent. We present results of preliminary applications of these models with standard unmixing algorithm. The results show that the inclusion of higher order reflections always produces progressively a better description of the abundances and the interactions between the endmembers in the scene.

頁(從 - 到)288-301
期刊Proceedings of SPIE - The International Society for Optical Engineering
出版狀態已出版 - 2004
事件Chemical and Biological Standoff Detection - Providence, RI., United States
持續時間: 28 10月 200330 10月 2003


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