1. A method of detecting and highlighting microcalcifications in a digital mammogram, comprising: applying round high-emphasis analysis to a digital mammogram to obtain a first image containing high-frequency information; applying mathematical morphology to said digital mammogram to obtain a second image containing high-frequency information; adding said first image and said second image and mapping the result to 8 bits to obtain a third image which is brightest in locations containing detail common to said first image and said second image; applying a Selective Erosion or Enhancement Filter to reduce false positives indicated in said third image to produce a fourth image; and indicating the position of all potential microcalcifications on said fourth image to produce a final image.