Abstract: For edge enhancement of a digitized fluorographic image, the original image is stored in a full frame memory. When each video vertical blanking pulse occurs time delays are initiated corresponding to shifting whole lines of pixels successively to the left and right and up and down by integral numbers before the pixels are read out of memory. As the pixels are read out for each vertical blanking cycle, they are multiplied by a coefficient related to the pixel shift number and the result is added to to image data from preceding cycles that are summed and stored in a second memory and the new result is returned to the second memory. The final result is an edge map in the second memory constituting digital values corresponding to the frequency components at edges. These are added to corresponding pixels in the original image, resulting in higher and sharper edges in a final digital image. The image is then converted to analog video signals to permit display on a video monitor.