DCT Block Operations on Images with Wavelet Transform Analysis

1. Select an image and perform DCT block operations (dividing image into 8×8 blocks, applying DCT transform to each block). 2. Use masking matrix for DCT coefficient region selection, perform inverse DCT to reconstruct original image, and calculate PSNR of synthesized image. 3. Choose a wavelet function to decompose an image, display transform coefficients to observe patterns, and perform inverse wavelet transform for image reconstruction.