A wavelet-based multiscale scheme for segmenting MR images is presented, which aims to extract structures of different sizes by performing segmentation from coarse to fine scales. This scheme alleviates some common difficulties encountered by region-based segmentation to avoid over-segmentation as well as to prevent small regions from being missed. It also allows users more effective control over the segmentation process in order to extract features suitable for their own purposes.
"Segmentation of MR images using multiresolution wavelet representations", Proc. SPIE 3034, Medical Imaging 1997: Image Processing, (25 April 1997); doi: 10.1117/12.274138; https://doi.org/10.1117/12.274138