22 papers · ranked by Valyu relevance
Liang Fang, Zhenyu Wan, Jian Wang
Optical interferometry has made tremendous development in fundamentals and applications of light. Traditional optical interferometry using simplex plane-phase light just allows onedimensional measurement, but incapable of retrieving multi-dimensiona1 movement. Here, we present new structured light interferometry to…
Parth Chansoria, Michael Winkelbauer, Shipin Zhang, Jakub Janiak + 2 more
Light-based biofabrication techniques have revolutionized the field of tissue engineering and regenerative medicine. Specifically, the projection of structured light, where the spatial distribution of light is controlled at both macro- and micro-scale, has enabled precise fabrication of complex three-dimensional…
Alessandro Paoli, Paolo Neri, Armando V. Razionale, Francesco Tamburrino + 1 more
'Francesco Tamburrino' 'Sandro Barone'] 3D digital models of the upper limb anatomy represent the starting point for the design process of bespoke devices, such as orthoses and prostheses, which can be modeled on the actual patient’s anatomy by using CAD (Computer Aided Design) tools. The ongoing research on optical…
Yu Zhou, Dongwei Zhao, Yao Yu, Jie Yuan + 1 more
In one-shot color structured light systems, the color of stripe patterns are typically distorted with respect to color crosstalk, ambient light and the albedo of the scanned objects, leading to mismatch in the correspondence of color stripes between the projected and captured images. In this paper, an adaptive color…
Dhawal Sirikonda, Praneeth Chakravarthula, Ioannis Gkioulekas, Adithya Pediredla
Comparison to Pediredla et al. . Our acousto-optic laser line scanning system is inspired by that introduced by Pediredla et al., with two important differences: 1. Pediredla et al. focus on point scanning for lidar applications, whereas we focus on line scanning for structured light. Therefore, their system uses two…
Yikang Li, Zhenzhou Wang, Marco Leo, Marco Marcon
Single-shot 3D reconstruction technique is very important for measuring moving and deforming objects. After many decades of study, a great number of interesting single-shot techniques have been proposed, yet the problem remains open. In this paper, a new approach is proposed to reconstruct deforming and moving objects…
Michel Zamboni-Rached, Nima Asoudegi, Joel Alcídio Varela Mendonça, Mo Mojahedi
In this work, we present a simple, exact, and fully analytical method for generating light sheets parallel to the propagation direction, with amplitude and phase envelopes structured on demand. We validate the approach theoretically and experimentally by imprinting images onto light sheets, and we compare the…
Matteo Calvarese, Petra Paiè, Alessia Candeo, Gianmaria Calisesi + 7 more
Structured Illumination Microscopy (SIM) is a key technology for high resolution and super-resolution imaging of biological cells and molecules. The spread of portable and easy-to-align SIM systems requires the development of novel methods to generate a light pattern and to shift it across the field of view of the…
Qiucheng Sun, Yueqian Hou, Qingchang Tan, Guannan Li + 1 more
A flexible calibration approach for line structured light vision system is proposed in this paper. Firstly a camera model is established by transforming the points from the 2D image plane to the world coordinate frame, and the intrinsic parameters of camera can be obtained accurately. Then a novel calibration method…
Huakeng Ding, Yaowen Chen, Kun Zhou, Hongzhi Wu
We present a differentiable framework to adaptively compute 4D illumination conditions with respect to an object, for efficient, high-quality simultaneous acquisition of its shape and reflectance, with a unified spatial-angular structured light and a single camera. Using a simple histogram-based pixel-level probability…
Huiping Gao, Guili Xu, Zhongchen Ma, Benjamin L. Miller
The line structured light plane calibration method using a plane target cannot produce satisfactory calibration results due to inaccurate positioning of the calibrated points. Field of view noise and sensor noise affect the target light stripe extraction and camera parameter calculation during the calibration process.…
Shijie Yan, Ruoyang Yao, Xavier Intes, Qianqian Fang
The increasing use of spatially-modulated imaging and single-pixel detection techniques demands computationally efficient methods for light transport modeling. Herein, we report an easy-to-implement yet significantly more efficient Monte Carlo (MC) method for simultaneously simulating spatially modulated illumination…
Shaobai Li, Bofan Song, Rongguang Liang
A resolution-enhanced dark-field microscope by structured light illumination is proposed to improve resolution and contrast. A set of phase-shifted fringes are projected to the sample plane at large angle to capture modulated dark-field images, from which resolution- and contrast-enhanced dark-field image, as well as…
Lingyuan Kong, Linqian Ma, Keyuan Wang, Xingshuo Peng + 2 more
'Francesco De Leonardis'] In this study, an innovative laser 3D-scanning technology is proposed to scan pipe inner walls in order to solve the problems of the exorbitant expenses and operational complexities of the current equipment for the 3D data acquisition of the pipe inner wall, and the difficulty of both the…
Kenta Temma, Ryosuke Oketani, Toshiki Kubo, Kazuki Bando + 9 more
Resolution enhancement in structured illumination microscopy is hindered when volumetric samples are observed owing to background signals from out-of-focus planes. In this study, we utilized selective plane illumination and reversibly photoswitchable fluorescent proteins to realize structured illumination within the…
Brittany Factura, Laura LaPerche, Phil Reyneri, Brett R. Jones + 1 more
Projected augmented reality, also called projection mapping or video mapping, is a form of augmented reality that uses projected light to directly augment 3D surfaces, as opposed to using passthrough screens or headsets. e value of projected AR is its ability to add a layer of digital content directly onto physical…
Takuya Yoda, Hajime Nagahara, Rin-ichiro Taniguchi, Keiichiro Kagawa + 2 more
'Keita Yasutomi' 'Shoji Kawahito'] The photometric stereo method enables estimation of surface normals from images that have been captured using different but known lighting directions. The classical photometric stereo method requires at least three images to determine the normals in a given scene. However, this method…
Cehao Yu, Maarten Wijntjes, Elmar Eiseman, Sylvia C. Pont
We present a method to capture the 7-dimensional light field structure, and translate it into perceptually-relevant information. Our spectral cubic illumination method quantifies objective correlates of perceptually relevant diffuse and directed light components, including their variations over time, space, in color…
Savannah L. Logan, Christopher Dudley, Ryan P. Baker, Michael J. Taormina + 2 more
Light sheet fluorescence microscopy enables fast, minimally phototoxic, three-dimensional imaging of live specimens, but is currently limited by low throughput and tedious sample preparation. Here, we describe an automated high-throughput light sheet fluorescence microscope in which specimens are positioned by and…
Jürgen Behr, Timm Michel, Maya Giridhar, Santra Santhosh + 11 more
Large- to ultra-large-scale synthesis of nucleic acids is becoming an increasingly important tool for understanding and manipulating biological systems, as well as for developing new technologies based on engineered biological materials, including DNA-based nanofabrication, aptamers and writing digital data at the…
Rienk Eelkema, Antonia Denkova, Tobias Breve, Sven Weerdenburg + 3 more
Stimuli-responsive soft materials enable controlled release of loaded drug molecules and biomolecules. Controlled release of potent chemotherapeutic or immunotherapeutic agent is crucial to reduce unwanted side effects. In an effort to develop controlled release strategies that can be triggered using Cerenkov…
Authors not listed
Self-assembly, the spontaneous organization of molecular components into ordered structures without external intervention, offers a powerful route to complex nanomaterials, yet the molecular-level pathways, particularly under non-equilibrium conditions, remain poorly understood. We track in real time the formation of…