A Constrained Energy Minimization Method in Sub-pixel Target Detection Based on Minimization Noise Fraction[J]. Journal of Image and Graphics, 2009, 14(9): 1850. DOI: 10.11834/jig.20090922.
This paper presents a constrained energy minimization method of sub-pixel target detection for hyper-spectral imageries based on minimum noise fraction (MNF-CEM). In this method
minimum noise fraction (MNF) reduces the dimension of the hyper-spectral imageries and separates the noise from the hyper-spectral imageries. Then constrained energy minimization method (CEM) is used to detect the sub-pixel targets in the imageries of low dimension to void the computations of ill-conditional matrix inverse and virtual dimension of the hyper-spectral imageries. Experiments show that this method can restrain the influence of noise and is an effective method of sub-pixel target detection for hyper-spectral imageries.