Images frequently need processing in order to enhance their appearance. We show an example in the following figure.
Image of house Edge enhanced image of house
The image on the left is the original, blurry image of a house. The image on the right is a processed image. The edges in the original image have been sharpened. Although this image has some defects compared to the original, there are also features that have been considerably enhanced, such as the fencing in front of the house and a vertical window divider in the middle of the image (which is invisible in the original). This type of edge enhancement is employed frequently in medical imagery and in scientific applications. We will discuss this method, and other methods of image enhancement, in the course.