(d) For the given 8-by-8 image block, calculate the Energy GLCM value using 3 levels of quantization, showing all the steps required in details. (choose proper quantization ranges) (e) In an image search system with 10 Million images in the database, each image has 2000 features extractd. If each feature requires 2 Bytes to store, how large should the RAM (in GBytes) be during the search time? Explain and show the steps for how the principal component analysis (PCA) approach is used to reduce the search complexity and required RAM size, showing all the steps needed