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14 February 2012 Using fractional gradient information in non-rigid image registration: application to breast MRI
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Abstract
This work applies fractional differentiation (differentiation to non-integer order) to the gradients determined from image intensities for enhanced image registration. The technique is used to correct known simulated deformations of volumetric breast MR data using two algorithms: direct registration of gradient magnitude images and an extension of a previously published method that incorporates both image intensity and image gradient information to enhance registration performance. Better recovery of known deformations are seen when using non-integer order derivatives: half-derivative breast images are better registered when these methods are incorporated into a standard diffusion-based registration algorithm.
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A. Melbourne, N. Cahill, C. Tanner, M. Modat, D. J. Hawkes, and S. Ourselin "Using fractional gradient information in non-rigid image registration: application to breast MRI", Proc. SPIE 8314, Medical Imaging 2012: Image Processing, 83141Z (14 February 2012); https://doi.org/10.1117/12.911173
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