Computer-Generated Hologram (CGH) Creation and Reconstruction

This MATLAB program enables comprehensive computer-generated hologram (CGH) creation and reconstruction. Holograms are optical elements that record three-dimensional object information with high resolution and full-viewing-angle capabilities. The hologram creation process involves multiple computational stages: simulating object wave interference patterns, digital reconstruction using Fourier transforms or point-source methods, data compression through quantization techniques, and encoding via phase or amplitude modulation algorithms. For hologram reconstruction, the program simulates laser illumination by implementing angular spectrum propagation methods, calculating diffraction phenomena at specific angles to generate three-dimensional volumetric displays. The code architecture includes key functions for wavefront propagation (using angular spectrum or Fresnel diffraction algorithms), interference pattern generation (via object-reference wave superposition), and reconstruction optimization (with filtering and phase retrieval techniques). This program provides robust support for research in physics, biology, and medical fields - for instance, in medical applications, holograms can facilitate biological tissue imaging through tomographic reconstruction algorithms, assisting physicians in disease analysis and diagnostic procedures.