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We propose an uplink massive MIMO system using an array of holographic metasurfaces as a sector antenna. The antenna consists of a set of rectangular waveguide-fed metasurfaces combined along the elevation direction into a planar aperture,…

Signal Processing · Electrical Eng. & Systems 2021-08-31 Insang Yoo , David R. Smith

Chromatic dispersion, an inherent wavelength-dependent phenomenon in optical systems, has traditionally been regarded as a detrimental effect to be minimized in imaging and display. Here, we present a paradigm shift by deliberately…

Optics · Physics 2025-12-19 Zi Wang , Dong Zhao , Li Liang , Hengyi Wang , Yuan Liu , Fang-Wen Sun , Kun Huang

Light scattering imposes a major obstacle for imaging objects seated deeply in turbid media, such as biological tissues and foggy air. Diffuse optical tomography (DOT) tackles scattering by volumetrically recovering the optical absorbance…

Head-worn displays for everyday wear in the form of regular eyeglasses are technically feasible with recent advances in waveguide technology. One major design decision is determining where in the user's visual field to position the display.…

Human-Computer Interaction · Computer Science 2025-05-15 Parth Arora , Ethan Kimmel , Katherine Huang , Tyler Kwok , Yukun Song , Sofia Vempala , Georgianna Lin , Ozan Cakmakci , Thad Starner

We introduce Hybrid Autoregressive Transformer (HART), an autoregressive (AR) visual generation model capable of directly generating 1024x1024 images, rivaling diffusion models in image generation quality. Existing AR models face…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Haotian Tang , Yecheng Wu , Shang Yang , Enze Xie , Junsong Chen , Junyu Chen , Zhuoyang Zhang , Han Cai , Yao Lu , Song Han

High dynamic range (HDR) imaging technique aims to create realistic HDR images from low dynamic range (LDR) inputs. Specifically, Multi-exposure HDR imaging uses multiple LDR frames taken from the same scene to improve reconstruction…

Image and Video Processing · Electrical Eng. & Systems 2025-07-03 Keuntek Lee , Jaehyun Park , Nam Ik Cho

The small correction volume for conventional wavefront shaping methods limits their applications in biological imaging through scattering media. We demonstrate large volume wavefront shaping through a scattering layer with a single…

Biological Physics · Physics 2017-02-20 Xiaodong Tao , Tuwin Lam , Bingzhao Zhu , Qinggele Li , Marc R. Reinig , Joel Kubby

Augmented reality (AR) displays become more and more popular recently, because of its high intuitiveness for humans and high-quality head-mounted display have rapidly developed. To achieve such displays with augmented information, highly…

Computer Vision and Pattern Recognition · Computer Science 2015-06-22 Kuan-Wen Chen , Chun-Hsin Wang , Xiao Wei , Qiao Liang , Ming-Hsuan Yang , Chu-Song Chen , Yi-Ping Hung

Optical see-through head-mounted displays (OST HMDs) typically display virtual content at a fixed focal distance while users need to integrate this information with real-world information at different depth layers. This problem is…

Human-Computer Interaction · Computer Science 2019-09-09 Anna Eiberger , Per Ola Kristensson , Susanne Mayr , Matthias Kranz , Jens Grubert

The Visible Integral Field Replicable Unit Spectrograph (VIRUS) is an array of at least 150 copies of a simple, fiber-fed integral field spectrograph that will be deployed on the Hobby-Eberly Telescope (HET) to carry out the HET Dark Energy…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Taylor S. Chonis , Gary J. Hill , J. Christopher Clemens , Bart Dunlap , Hanshin Lee

We consider the problem of planning views for a robot to acquire images of an object for visual inspection and reconstruction. In contrast to offline methods which require a 3D model of the object as input or online methods which rely on…

Robotics · Computer Science 2019-10-07 Selim Engin , Eric Mitchell , Daewon Lee , Volkan Isler , Daniel D. Lee

In this paper, we propose an intelligent reflecting surface (IRS)-enabled low-altitude multi-access edge computing (MEC) architecture, where an aerial MEC server cooperates with a terrestrial MEC server to provide computing services, while…

Networking and Internet Architecture · Computer Science 2026-01-01 Yixian Wang , Geng Sun , Zemin Sun , Jiacheng Wang , Changyuan Zhao , Daxin Tian , Dusit Niyato , Shiwen Mao

Two-dimensional (2D) wide field-of-view (FOV) beam steering is a key enabling capability for emerging free-space optical systems, including inter-satellite optical links, airborne LiDAR, point-to-point optical wireless communications, and…

We propose an extension of popular descriptors based on gradient orientation histograms (HOG, computed in a single image) to multiple views. It hinges on interpreting HOG as a conditional density in the space of sampled images, where the…

Computer Vision and Pattern Recognition · Computer Science 2013-11-26 Jingming Dong , Jonathan Balzer , Damek Davis , Joshua Hernandez , Stefano Soatto

A head-mounted display (HMD) using holography technology (holo-HMD) is expected to be the next generation of HMDs capable of reducing three-dimensional sickness. In HMDs, it is important to generate images that respond to head movement in…

Optics · Physics 2026-01-23 Taichi Sakakihara , Teppei Jodo , Seok Kang , Yuji Sakamoto

This paper studies the superdirectivity characteristics of uniform rectangular arrays (URAs) for holographic multiple-input multiple-output systems. By establishing a mathematical directivity model for the URA, an analytical expression for…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Hang Lin , Liuxun Xue , Shu Sun , Ruifeng Gao , Jue Wang , Tengjiao Wang

We present an algorithm for holographic shaping of partially coherent light, bridging the gap between traditional coherent and geometric optical approaches. The description of partially coherent light relies on a mode expansion formalism,…

Optics · Physics 2022-01-26 Nicolas Barré , Alexander Jesacher

Fiber-form optics extends the high-resolution tomographic imaging capabilities of Optical Coherence Tomography (OCT) to the inside of the human body, i.e., endoscopic OCT. However, it still faces challenges due to the trade-off between…

Optics · Physics 2024-09-04 Chengfu Gu , Haoran Zhang , Qi Lan , Weiyi Zhang , Chang Liu , Jianlong Yang

Most commercially available optical see-through head-mounted displays (OST-HMDs) utilize optical combiners to simultaneously visualize the physical background and virtual objects. The displayed images perceived by users are a blend of…

Graphics · Computer Science 2021-01-11 Yunjin Zhang , Rui Wang , Yifan , Peng , Wei Hua , Hujun Bao

While current personal smart devices excel in digital domains, they fall short in assisting users during human environment interaction. This paper proposes Heads Up eXperience (HUX), an AI system designed to bridge this gap, serving as a…

Human-Computer Interaction · Computer Science 2024-07-30 Sukanth K , Sudhiksha Kandavel Rajan , Rajashekhar V S , Gowdham Prabhakar
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