Information in the joint aggregate pixel distribution of two images

Wit T. Wisniewski; Robert A. Schowengerdt

doi:10.1117/12.602662

25 May 2005 Information in the joint aggregate pixel distribution of two images

Wit T. Wisniewski, Robert A. Schowengerdt

Proceedings Volume 5817, Visual Information Processing XIV; (2005) https://doi.org/10.1117/12.602662
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

Pixel value distributions of most real images have structure that cannot be modeled by simple and commonly used probability distributions, such as Gaussian or log-normal distributions. Estimation of pixel value distribution in the joint measurement space ( JMS ) of two real images reveals the joint density structure and allows its interpretation by means of statistical dependence measures. A dependence measure is a general way to express similarity or divergence between images. Candidate dependence measures include adaptations of information measures such as Shannon Entropy and Fisher Information. The dependence measure built from Fisher Information is tested and demonstrated by experiments in Independent Components Analysis ( ICA ) and co-registration of synthetic and real Landsat TM images, including successful co-registration of images from different spectral bands with zero linear correlation.

Citation Download Citation

Wit T. Wisniewski and Robert A. Schowengerdt "Information in the joint aggregate pixel distribution of two images", Proc. SPIE 5817, Visual Information Processing XIV, (25 May 2005); https://doi.org/10.1117/12.602662

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