Question 1 (a) What is corner detection in computer vision? Why is it so widely used? (b) The operator due to Moravec is widely used for detecting corners. With the aid of a diagram, describe the major stages of this operator. (c) Matching equivalent corners between images can be achieved by describing each corner using the BRIEF descriptor. Describe briefly what is stored in a BRIEF descriptor and how the similarity of two BRIEF descriptors is found.