彩色数字全息常见波面重建算法的实现与比较

为了研究彩色数字全息检测应用中波面重建方法对重建场质量与计算速度的影响,及不同波长记录的重建场的准确融合,采用理论分析及实验验证的方法,给出了不同色光物光重建场准确重叠的方法及彩色数字全息波面实时再现的详细过程,并分析比较了几种波面重建算法的特点及计算速率。结果表明,使用球面波为重建光的可变放大率波面重建算法能适应各种大小的物体,且可获得较高分辨率的像,并占用较少的计算时间,能较好适用于彩色数字全息检测应用。

Realization and comparison of wave front reconstruction algorithms commonly used in colour digital holography

In order to study the influence of wave front reconstruction methods on the reconstruction field quality and the calculation speed during the application of color digital holographic detection and the accurate integration of different wavelengths and reconstruction field, the method of accurate overlap of the reconstruction field of the different color and object light and the detailed process of wavefront reproduction in real time of digital holographic color were given by theoretical analysis and experimental verification. The characteristics and the calculation rate of several wavefront reconstruction algorithms were analyzed and compared. The results show that variable magnification wavefront reconstruction algorithm using spherical wave as reconstruction light can adapt to objects in various size, obtain higher resolution images with less computing time and it is better for color digital holographic detection applications.