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Volume: 1 | Article ID: art00072
Vector Correlation of Color Images
  DOI :  10.2352/CGIV.2002.1.1.art00072  Published OnlineJanuary 2002

Auto-correlation and cross-correlation have been used in signal and image processing for many years, but have only recently been applied to color images. Since the correlation of individual signals and gray-scale images yields a measure of structural similarity, in each of their dimensions, the correlation of n-dimensional signals should yield similarity measures of n-dimensional space. This paper presents, for the first time, evidence that a vector correlation peak encodes both the structural similarity and also a mapping of the vector-space rotation between two color images.

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C. E. Moxey, T. A. Ell, S. J. Sangwine, "Vector Correlation of Color Imagesin Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision,  2002,  pp 343 - 347,

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