Spectral Filtering for Computer-Generated Holograms and Digital Holograms

This MATLAB-coded program enables the generation and spectral filtering processing of both computer-generated holograms and digital holograms. Through this implementation, users can gain deeper insights into hologram generation principles and digital hologram processing techniques. The spectral filtering algorithm effectively enhances hologram quality and clarity by applying frequency domain operations such as low-pass, high-pass, or band-pass filtering to the hologram's Fourier spectrum. This processing method improves observation accuracy and reliability by reducing noise and enhancing relevant frequency components. The program utilizes key MATLAB functions including fft2 for 2D Fourier transform, ifft2 for inverse transformation, and custom filter design functions for frequency domain manipulation. This tool provides valuable assistance in holography research and applications, offering a robust methodology for advancing developments in related fields through programmable digital signal processing techniques.