Intensity-based consistent elastic registration algorithm
Yu-chao BAI · Journal of Computer Applications · 2009
In various medical image registration algorithms,intensity-based elastic registration has the advantage of automation of high degree,but the ambiguity in intensity correspondence in the algorithms may lead to mis-registration.The consistency registration algorithm,which used local cross correlation coefficient as the similarity metric,was proposed.The algorithm connects the forward and inverse transformations together and uses the sum of local cross correlation as similarity metric function.By adding a consistent constraint to the similarity metric,the method guarantees that forward and inverse transformations are mutually reversible.Additionally,the intensity correspondence is highly improved.