Question 2 (20%) The followings show three PGM (face) back-and-white (gray scale) images. P2 #picture1.pgm 33 15 0 2 4 2 5 0 2 NOO 5 P2 #picture2.pgm 33 15 7 0 6 4 7 ONO P2 #picture3.pgm 33 15 10 0 12 0 12 8 12 0 10 Part A (10%): Using Eigen-face approach, and pictures and picture2 as the enrollment templates, derive the feature vector ---that is the set of weights, of each template (picture1, picture2). Part B (5%): Following up Part A, derive the feature vector of the sample image picture3 using the Eigen- face approach Part C (5%): Using Euclidean distance method, determine whether there is a match between the sample image picture 3 with either picture or picture 2. What threshold value did you choose? What is your criterion for choosing the threshold value? visit the False