Reel, Parminder Singh; Dooley, Laurence S. and Wong, Patrick
Efficient Image Registration using Fast Principal Component Analysis.
In: IEEE International Conference on Image Processing (ICIP'12), 30th Sept to 3rd Oct 2012, Lake Buena Vista, Orlando, Florida, USA.
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Incorporating spatial features with mutual information (MI) has demonstrated superior image registration performance compared with traditional MI-based methods, particularly in the presence of noise and intensity non-uniformities (INU). This paper presents a new efficient MI-based similarity measure which applies Expectation Maximisation for Principal Component Analysis (EMPCA-MI), to afford significantly lower computational complexity, while providing analogous image registration performance with other feature-based MI solutions. Experimental analysis corroborates both the improved robustness and faster runtimes of EMPCA-MI, for different test datasets containing both INU and noise artefacts.
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