97) [12 points] Entropy and Huffman coding: 1. [6 points) What is the entropy of the image below (show the calculation steps)? The numbers (0, 10, 60, 80, 90) denote gray-level intensities? 90 60 10 10 0 0 0 0 80 80 80 80 10 10 10 10 1000 10 0 0 0 o 1000 60 60 60 0 60 600 10 10 10 100 60 90 0 60 60 60 60 0 60 0 90 90 90 90 0 0 10 60 60 60 60 100 0 2. [6 points] Show, step-by-step, how to construct the Huffman tree to encode the above intensity values (i.e., 0, 10, 60, 80, 90) in this image. Show the resulting code for each intensity value