2 research outputs found
Conditions on the existence of unambiguous morphisms
A morphism α is (strongly) unambiguous with respect to a word α if there is no
other morphism τ that maps α to the same image as σ. Moreover, α is said to be
weakly unambiguous with respect to a word α if σ is the only nonerasing morphism.....
A perceptual aid to delineating the extent of potential mammographic abnormalities
Being able to accurately determine the extent of a possible malignancy on a mammogram is an important task as this can affect the potential follow up surgical treatment that a woman receives after breast screening. It is known that this can be a difficult task, particularly where the lesion has diffuse abnormalities.
A potential computer-aided approach is to employ Hierarchical Clustering-based Segmentation (HCS) and this interactive educational exhibit dynamically demonstrates this technique. HCS is an unsupervised segmentation process that when applied to an image yields a hierarchy of segmentations based on image pixel dissimilarities and so can be used to highlight areas in the mammographic image to aid interpretation