Magnetic Resonance (MR) Imaging (MRI), a non-invasive method for imaging the human body, has revolutionized medical imaging. MR image processing, particularly segmentation, and analysis are used extensively in medical and clinical research for advancing our understanding and diagnosis of various human diseases. These efforts face two major difficulties - the first due to image intensity inhomogeneity present as a background variation component, and the second due to the non-standardness of the MR image intensities. Scale is a fundamental concept useful in almost all image processing and...