关联成像, 又称鬼成像, 是一种利用空间强度关联或量子纠缠特性来获取物体成像的一种新方法, 是用于物像分离的非局域成像方式。将激光投影仪应用到关联成像, 采用具有良好正交性, 快速计算能力的哈达玛矩阵作为调制矩阵, 由于其元素均为+1和-1, 便于硬件和光学实现, 可以在课堂上完成, 能够快速精确地重构目标图像。该实验方案没有了传统关联成像系统中参考臂的测量, 使用一个没有空间分辨力的桶探测器就可以进行实验。实验结果表明, 在课堂上使用激光投影仪等普通光源实现关联成像过程的可行性。

Correlated imaging, also known as ghost imaging (GI), is a new imaging method that uses spatial correlation or quantum entanglement to acquire object imaging, and is also a non-local imaging method for object image separation. The laser projector is applied to ghost imaging, the Hadamard matrix with good orthogonality and fast computing ability is used as the modulation matrix, because its elements are both +1 and -1, it is easy to implement in hardware and optics, which can be done in class, ability to quickly and accurately reconstruct the target image. This experimental scheme eliminates the measurement of the reference arm in the traditional ghost imaging system and can be tested using a bucket detector without spatial resolution. The experimental results show that the feasibility of ghost imaging process is achieved by using a common light source such as a laser projector in the classroom.