为了提高计算全息的运算效率, 提出了一种新的计算全息快速获得不同形式再现像的算法, 此算法只需对实验物体的傅里叶频谱进行一系列坐标变换, 便能够实现对再现像的上下翻转、旋转、切变等操作, 从而大大简少了计算量, 并进行了实验验证。结果表明, 这种新的算法是切实可行的。

In order to improve the computational efficiency of computer generated hologram(CGH), a novel algorithm was proposed to obtain multiple-type reconstruction images of CGH based on spectrum diffraction theory. The reconstruction images can be rotated, sheared and inversed by just transforming the coordinates of the Fourier spectrum so that the calculation amount is reduced a lot. Besides, it was also validated in experiments. The experiment results prove the new algorithm is feasible.