三维物体的计算全息的快速算法

Rapid algorithm for computer-generated hologram of three-dimensional object

提出了一种新的三维物体全息图的快速算法,根据点光源在全息面上的复振幅是中心对称的特性,加速得到阵列采样的全息数据,还快速得到了不同深度的主全息数据.该算法通过主深度主全息数据按比例缩放得到其他深度主全息数据,在同一深度上点全息数据由同深度主全息数据平移得到.分析和实验结果表明,改进后的算法能够减少计算量,提高计算速度,得到深度主全息数据的速度提高了5倍左右.

A new rapid algorithm for hologram of three-dimensional object was presented. The algorithm can rapidly generate the point hologram and the main hologram data of different depth according to the center symmetric distribution of dot hologram. The main holographic data of other depth were achieved by zooming in/out the main holographic data of the main depth. The point holographic data were generated by shifting the main holographic of the same depth. The analysis and experimental results show that the new algorithm can effectively shorten the computing time and its speed is nearly five times faster than otheralgorithms.