Horisaki Ryoichi, Ogura Yusuke, Aino Masahiko, Tanida Jun
Opt Lett. 2014 Nov 15;39(22):6466-9. doi: 10.1364/OL.39.006466.
We present a method of quantitatively acquiring a large complex field, containing not only amplitude information but also phase information, based on single-shot phase imaging with a coded aperture (SPICA). In SPICA, the propagating field from an object illuminated by partially coherent visible light is sieved by a coded mask, and the sieved field propagates to an image sensor, where it is captured. The sieved field is recovered from the single captured intensity image via a phase retrieval algorithm with an amplitude support constraint using the mask pattern, and then the object's complex field is reconstructed from the recovered sieved field by an algorithm employing a sparsity constraint based on compressive sensing. The system model and the theoretical bounds of SPICA are derived. We also verified the concept with numerical demonstrations.
我们提出了一种基于带编码孔径的单次相位成像（SPICA）定量获取大型复杂场的方法，该场不仅包含幅度信息，还包含相位信息。在SPICA中，由部分相干可见光照明的物体的传播场通过编码掩模进行筛选，筛选后的场传播到图像传感器并在那里被捕获。通过使用掩模图案的具有幅度支持约束的相位检索算法从单个捕获的强度图像中恢复筛选后的场，然后通过基于压缩感知采用稀疏约束的算法从恢复的筛选后的场重建物体的复场。推导了SPICA的系统模型和理论界限。我们还通过数值演示验证了这一概念。
