一 种 新 型 复 振 幅 全 息 图 编 码 方 法

Current hologram computation suffers from low efficiency and loss of encoded information. To address these issues, a novel encoding method for complex amplitude hologram is proposed. The proposed approach decomposes the com⁃ plex amplitude distribution calculated by the angular spectrum method into amplitude and phase information, then generates a hologram containing complete amplitude and phase information through multi-phase encoding. Compared with the traditional Gerchberg-Saxton（GS）algorithm, under the same computation time, the proposed multi-phase encoding method improves the PSNR of the reconstructed holographic image by 15.49 dB and the SSIM by 0.65. This method provides a new approach for enhancing the quality of holographic reconstructed images for three-dimensional display.