Three-Level Non-Standard Wavelet Decomposition and Reconstruction

Implementation of three-level non-standard wavelet decomposition and reconstruction using two wavelet types: Haar wavelet and db9 wavelet. The program performs 3-level wavelet decomposition and reconstruction on images. Using a personal photograph as the subject, the process demonstrates either wavelet's decomposition and reconstruction procedure. For Haar wavelet, reconstruction images are stored in PNG format with thresholds 0, 5, 10, and 20, with results recorded in an "Image Test Table". For db9 wavelet, reconstruction uses thresholds 0, 5, and 10, storing PNG images and populating the test table.