A new fast fractal coding method for the detection of microcalcifications in mammograms

Microcalcifications in mammograms can be considered as early signs of breast cancer. A new fast fractal image coding method for the detection of microcalcifications in the ROIs of mammograms is proposed in this paper. Sankar improved the conventional fractal image coding method, but not thoroughly enough. It is modified in the proposed method that both range and domain blocks are classified; two adaptive thresholds are presented which are used for the binaryzation before which the restored image is median filtered. According to this study, the proposed method, comparing with the Sankar´s method, has higher detection speed and detection performance.