Single-pixel imaging by means of Fourier spectrum acquisition
Single-pixel imaging by means of Fourier spectrum acquisition
复制标题
通过傅里叶频谱采集进行单像素成像
DOI：
10.1038/ncomms7225
复制
发表时间：
2015-02-01
影响因子：
16.6
通讯作者：
Zhong, Jingang
中科院分区：
文献类型：
--
作者：
Zhang, Zibang;Ma, Xiao;Zhong, Jingang
单像素成像技术能够在不直接看到物体的情况下捕获场景，但事实证明，高质量的成像具有挑战性，特别是在存在噪声的环境照明的情况下。在这里，我们提出了一种单像素成像技术，它可以通过获取它们的傅里叶谱来获得高质量的图像。我们使用移相正弦结构照明进行光谱采集。对所获得的光谱进行傅里叶逆变换可得到所需的图像。所提出的技术能够在不直接观察场景的情况下捕获场景。因此，只有在探测器能够从现场采集光信号的情况下，才能实现探测器的可行放置。该技术也是一种类似压缩采样的方法，因此它可以根据亚奈奎斯特测量重建图像。我们通过实验获得了清晰的图像，即使在环境照明引入噪声的情况下，也使用了一个没有放置在成像场景直视位置的探测器。
Single-pixel imaging techniques enable to capture a scene without a direct line of sight to the object, but high-quality imaging has been proven challenging especially in the presence of noisy environmental illumination. Here we present a single-pixel imaging technique that can achieve high-quality images by acquiring their Fourier spectrum. We use phase-shifting sinusoid structured illumination for the spectrum acquisition. Applying inverse Fourier transform to the obtained spectrum yields the desired image. The proposed technique is capable of capturing a scene without a direct view of it. Thus, it enables a feasible placement of detectors, only if the detectors can collect the light signals from the scene. The technique is also a compressive sampling like approach, so it can reconstruct an image from sub-Nyquist measurements. We experimentally obtain clear images by utilizing a detector not placed in direct view of the imaged scene even with noise introduced by environmental illuminations.