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Traditional paradigms for imaging rely on the use of a spatial structure, either in the detector (pixels arrays) or in the illumination (patterned light). Removal of the spatial structure in the detector or illumination, i.e., imaging with…

We develop a novel algorithm for large-scale holographic reconstruction of 3D particle fields. Our method is based on a multiple-scattering beam propagation method (BPM) combined with sparse regularization that enables recovering dense 3D…

光学 · 物理学 2021-05-24 Hao Wang , Waleed Tahir , Jiabei Zhu , Lei Tian

In this work we present a unified method of relative camera pose estimation from points and lines correspondences. Given a set of 2D points and lines correspondences in three views, of which two are known, a method has been developed for…

机器人学 · 计算机科学 2017-10-19 Ashraf Qadir , Jeremiah Neubert

It is an exciting task to recover the scene's 3d-structure and camera pose from the video sequence. Most of the current solutions divide it into two parts, monocular depth recovery and camera pose estimation. The monocular depth recovery is…

计算机视觉与模式识别 · 计算机科学 2018-05-24 YanTong Wu , Yang Liu

In this paper, we unleash the potential of the powerful monodepth model in camera-LiDAR calibration and propose CLAIM, a novel method of aligning data from the camera and LiDAR. Given the initial guess and pairs of images and LiDAR point…

机器人学 · 计算机科学 2026-03-18 Zhuo Zhang , Yonghui Liu , Meijie Zhang , Feiyang Tan , Yikang Ding

Reconstructing high-quality 3D models from sparse 2D images has garnered significant attention in computer vision. Recently, 3D Gaussian Splatting (3DGS) has gained prominence due to its explicit representation with efficient training speed…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Keng-Wei Chang , Zi-Ming Wang , Shang-Hong Lai

Complementary to conventional and phase X-ray radiography, dark-field imaging has become central in visualizing diffusive scattering signal due to the spatially-unresolved texture within an object. To date most diffusive-dark-field…

医学物理 · 物理学 2023-03-21 Mario A. Beltran , David M. Paganin , Michelle K. Croughan , Kaye S. Morgan

Detecting objects in 3D LiDAR data is a core technology for autonomous driving and other robotics applications. Although LiDAR data is acquired over time, most of the 3D object detection algorithms propose object bounding boxes…

计算机视觉与模式识别 · 计算机科学 2020-07-27 Rui Huang , Wanyue Zhang , Abhijit Kundu , Caroline Pantofaru , David A Ross , Thomas Funkhouser , Alireza Fathi

A small ISO and a small exposure time are usually used to capture an image in the back or low light conditions which results in an image with negligible motion blur and small noise but look dark. In this paper, a single image brightening…

计算机视觉与模式识别 · 计算机科学 2020-07-27 Chaobing Zheng , Zhengguo Li , Yi Yang , Shiqian Wu

We demonstrate a method to determine the position of single atoms in a three-dimensional optical lattice. Atoms are sparsely loaded from a far-off-resonant optical tweezer into a few vertical planes of a cubic optical lattice positioned…

In this paper a new model method for describing of the electrostatic screening in single-component systems which is free of Debye-Huckel's non-physical properties is presented. The method is appropriate for the determination of screening…

等离子体物理 · 物理学 2009-06-30 A. A. Mihajlov , Y. Vitel , Lj. M. Ignjatovic

SPAD cameras offer single photon detection sensitivity, high frame rates and zero readout noise. They are a core technology for widefield FLIM, but have further potential in ultra-fast imaging applications. However, in practice sensitivity…

Single particle imaging (SPI) at X-ray free electron lasers (XFELs) is a technique to determine the 3D structure of nanoscale objects like biomolecules from a large number of diffraction patterns of copies of these objects in random…

图像与视频处理 · 电气工程与系统科学 2022-10-20 Abhishek Mall , Kartik Ayyer

We propose a new learning-based approach for 3D particle field imaging using holography. Our approach uses a U-net architecture incorporating residual connections, Swish activation, hologram preprocessing, and transfer learning to cope with…

图像与视频处理 · 电气工程与系统科学 2020-02-19 Siyao Shao , Kevin Mallery , Santosh Kumar , Jiarong Hong

Recent innovations shows that blending of details captured by single Low Dynamic Range (LDR) sensor overcomes the limitations of standard digital cameras to capture details from high dynamic range scene. We present a method to produce…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Harbinder Singh , Dinesh Arora , Vinay Kumar

Monocular 3D object detection is well-known to be a challenging vision task due to the loss of depth information; attempts to recover depth using separate image-only approaches lead to unstable and noisy depth estimates, harming 3D…

计算机视觉与模式识别 · 计算机科学 2019-05-15 Ivan Barabanau , Alexey Artemov , Evgeny Burnaev , Vyacheslav Murashkin

Long-range active imaging has widespread applications in remote sensing and target recognition. Single-photon light detection and ranging (lidar) has been shown to have high sensitivity and temporal resolution. On the application front,…

图像与视频处理 · 电气工程与系统科学 2021-03-11 Zheng-Ping Li , Jun-Tian Ye , Xin Huang , Peng-Yu Jiang , Yuan Cao , Yu Hong , Chao Yu , Jun Zhang , Qiang Zhang , Cheng-Zhi Peng , Feihu Xu , Jian-Wei Pan

Spherical cameras capture scenes in a holistic manner and have been used for room layout estimation. Recently, with the availability of appropriate datasets, there has also been progress in depth estimation from a single omnidirectional…

计算机视觉与模式识别 · 计算机科学 2022-06-24 Nikolaos Zioulis , Federico Alvarez , Dimitrios Zarpalas , Petros Daras

Single-photon cameras present a promising avenue for high-resolution 3D imaging. They have ultra-high sensitivity -- down to individual photons -- and can record photon arrival times with extremely high (sub-nanosecond) resolution.…

图像与视频处理 · 电气工程与系统科学 2024-08-30 Kaustubh Sadekar , David Maier , Atul Ingle

Plenoptic imaging enables a light-field to be captured by a single monocular objective lens and an array of micro lenses attached to an image sensor. Metric distances of the light-field's depth planes remain unapparent prior to acquisition.…

图像与视频处理 · 电气工程与系统科学 2020-06-02 Christopher Hahne , Amar Aggoun