中国激光, 2018, 45 (12): 1209001, 网络出版: 2019-05-09
三维纯相位全息显示中的散斑噪声抑制 下载: 982次
Speckle Noise Suppression in Three-Dimensional Phase-Only Holographic Display
全息 纯相位全息图 散斑噪声 误差扩散法 角谱衍射 分层角谱 holography phase-only hologram speckle noise error diffusion method angular-spectral diffraction layer-oriented angular-spectrum
摘要
提出了一种基于角谱衍射理论的误差扩散算法。通过分层角谱算法计算得到三维物体的复振幅全息图,利用误差扩散法计算得到纯相位全息图,并重建出清晰的再现像,实现了对三维物体纯相位全息再现像的散斑噪声的抑制。仿真实验验证了该方法的可行性及优越性,所提方法明显提高了重构图像的质量。
Abstract
An error diffusion algorithm based on the angular-spectral diffraction theory is proposed. The complex amplitude hologram of a three-dimensional object is calculated by the layered angular-spectral algorithm. The error diffusion method is used to obtain the phase-only hologram. The clear reconstructed image is reconstructed and the speckle noise of the phase-only holographic reconstructed image for a three-dimensional object is suppressed. The simulation experimental results verify the feasibility and superiority of this algorithm. This proposed algorithm can significantly improve the quality of reconstructed images.
周婷婷, 韩超. 三维纯相位全息显示中的散斑噪声抑制[J]. 中国激光, 2018, 45(12): 1209001. Tingting Zhou, Chao Han. Speckle Noise Suppression in Three-Dimensional Phase-Only Holographic Display[J]. Chinese Journal of Lasers, 2018, 45(12): 1209001.