干旱区生态环境知识资源中心(Arid): 3D-FFT for Signature Detection in LWIR Images

Arid

DOI	10.2172/1069218
报告编号	PNNL-17105
来源ID	OSTI_ID: 1069218
	3D-FFT for Signature Detection in LWIR Images
	Medvick, Patricia A.; Lind, Michael A.; Mackey, Patrick S.; Nuffer, Lisa L.; Foote, Harlan P.
英文摘要	Improvements in analysis detection exploitation are possible by applying whitened matched filtering within the Fourier domain to hyperspectral data cubes. We describe an implementation of a Three Dimensional Fast Fourier Transform Whitened Matched Filter (3DFFTMF) approach and, using several example sets of Long Wave Infra Red (LWIR) data cubes, compare the results with those from standard Whitened Matched Filter (WMF) techniques. Since the variability in shape of gaseous plumes precludes the use of spatial conformation in the matched filtering, the 3DFFTMF results were similar to those of two other WMF methods. Including a spatial low-pass filter within the Fourier space can improve signal to noise ratios and therefore improve detection limit by facilitating the mitigation of high frequency clutter. The improvement only occurs if the low-pass filter diameter is smaller than the plume diameter.
出版年	2007
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	Whitened Matched Filtering, Fourier domain
URL	http://www.osti.gov/scitech/servlets/purl/1069218
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/269495
推荐引用方式 GB/T 7714	Medvick, Patricia A.,Lind, Michael A.,Mackey, Patrick S.,et al. 3D-FFT for Signature Detection in LWIR Images,2007.