Ultrafast light field tomography for snapshot transient and non-line-of-sight imaging.
Ultrafast light field tomography for snapshot transient and non-line-of-sight imaging.
复制标题
DOI：
10.1038/s41467-021-22461-0
复制
发表时间：
2021-04-12
影响因子：
16.6
通讯作者：
Gao L
中科院分区：
文献类型：
--
作者：
Feng X;Gao L
极速相机正在基础科学和应用科学领域推动技术发展。然而，现有的超快相机无法处理扩展的三维场景，并且不适合非视线成像，这需要长序列的时间分辨的二维数据。因此，当前的非视线成像器需要在空间和/或时间维度上执行广泛的扫描，限制了它们仅在对静态或缓慢移动的对象进行成像中的使用。为了解决这些长期存在的挑战，我们在这里提出了超快光场层析成像（LIFT），这是一种瞬态成像策略，可提供超过1000的时间序列，并实现高效的光场采集，允许完整的四维空间和时间的快照采集。使用LIFT，我们展示了飞行现象中光的三维成像，分辨率<10皮秒，视频速率为30 Hz的非视线成像。此外，我们还展示了LIFT如何从深度学习中受益，以改进和加速图像形成。LIFT可促进在各学科中广泛采用时间分辨方法。速度和3D能力对于非视线成像通常是不兼容的。在这里，作者介绍了超快光场层析成像（LIFT），它使用一种高效的光场采集技术来获得3D和时间。
Cameras with extreme speeds are enabling technologies in both fundamental and applied sciences. However, existing ultrafast cameras are incapable of coping with extended three-dimensional scenes and fall short for non-line-of-sight imaging, which requires a long sequence of time-resolved two-dimensional data. Current non-line-of-sight imagers, therefore, need to perform extensive scanning in the spatial and/or temporal dimension, restricting their use in imaging only static or slowly moving objects. To address these long-standing challenges, we present here ultrafast light field tomography (LIFT), a transient imaging strategy that offers a temporal sequence of over 1000 and enables highly efficient light field acquisition, allowing snapshot acquisition of the complete four-dimensional space and time. With LIFT, we demonstrated three-dimensional imaging of light in flight phenomena with a <10 picoseconds resolution and non-line-of-sight imaging at a 30 Hz video-rate. Furthermore, we showed how LIFT can benefit from deep learning for an improved and accelerated image formation. LIFT may facilitate broad adoption of time-resolved methods in various disciplines. Speed and 3D capability are often incompatible for non-line-of-sight imaging. Here, the authors introduce ultrafast light field tomography (LIFT) that uses an efficient light field acquisition technique to obtain 3D and time.
登录
查看更多内容
影响因子：
23.8
作者：
Maier, Andreas K.;Syben, Christopher;Christiansen, Silke
通讯作者：
Christiansen, Silke
影响因子：
3.6
作者：
Feng, Xiaohua;Gao, Liang
通讯作者：
Gao, Liang
影响因子：
3.8
作者：
La Manna, Marco;Nam, Ji-Hyun;Velten, Andreas
通讯作者：
Velten, Andreas
影响因子：
10.4
作者：
Gyongy, Istvan;Hutchings, Sam W.;Leach, Jonathan
通讯作者：
Leach, Jonathan
影响因子：
19.4
作者：
Liang, Jinyang;Zhu, Liren;Wang, Lihong V.
通讯作者：
Wang, Lihong V.