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A four-dimensional light field (LF) captures both textural and geometrical information of a scene in contrast to a two-dimensional image that captures only the textural information of a scene. Post-capture refocusing is an exciting…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Tharindu Samarakoon , Kalana Abeywardena , Chamira U. S. Edussooriya

Light field imaging introduced the capability to refocus an image after capturing. Currently there are two popular methods for refocusing, shift-and-sum and Fourier slice methods. Neither of these two methods can refocus the light field in…

Image and Video Processing · Electrical Eng. & Systems 2022-04-20 Eisa Hedayati , Timothy C. Havens , Jeremy P. Bos

Light field photography enables to record 4D images, containing angular information alongside spatial information of the scene. One of the important applications of light field imaging is post-capture refocusing. Current methods require for…

Computer Vision and Pattern Recognition · Computer Science 2020-09-08 Shachar Ben Dayan , David Mendlovic , Raja Giryes

Light field imaging, which captures spatio-angular information of incident light on image sensor, enables many interesting applications like image refocusing and augmented reality. However, due to the limited sensor resolution, a trade-off…

Image and Video Processing · Electrical Eng. & Systems 2020-07-15 Chang-Le Liu , Kuang-Tsu Shih , Jiun-Woei Huang , Homer H. Chen

Light-field cameras allow the acquisition of both the spatial and angular components of the light. This has a wide range of applications from image refocusing to 3D reconstruction of a scene. The conventional way to perform such…

Light field (LF) cameras record both intensity and directions of light rays, and capture scenes from a number of viewpoints. Both information within each perspective (i.e., spatial information) and among different perspectives (i.e.,…

Image and Video Processing · Electrical Eng. & Systems 2020-06-05 Yingqian Wang , Longguang Wang , Jungang Yang , Wei An , Jingyi Yu , Yulan Guo

The correction of exposure-related issues is a pivotal component in enhancing the quality of images, offering substantial implications for various computer vision tasks. Historically, most methodologies have predominantly utilized spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Xiaoke Shang , Gehui Li , Zhiying Jiang , Shaomin Zhang , Nai Ding , Jinyuan Liu

Camera arrays provide spatial and angular information within a single snapshot. With refocusing methods, focal planes can be altered after exposure. In this letter, we propose a light field refocusing method to improve the imaging quality…

Image and Video Processing · Electrical Eng. & Systems 2021-08-29 Yingqian Wang , Jungang Yang , Yulan Guo , Chao Xiao , Wei An

Light fields preserve angular information which can be retargeted to multi-panel depth displays. Due to limited aperture size and constrained spatial-angular sampling of many light field capture systems, the displayed light fields provide…

Image and Video Processing · Electrical Eng. & Systems 2017-10-09 Basel Salahieh , Seth Hunter , Yi Wu , Oscar Nestares

A Light Field (LF) camera consists of an additional two-dimensional array of micro-lenses placed between the main lens and sensor, compared to a conventional camera. The sensor pixels under each micro-lens receive light from a sub-aperture…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Suresh Nehra , Aupendu Kar , Jayanta Mukhopadhyay , Prabir Kumar Biswas

There is a general expectation that robots should operate in environments that consist of static and dynamic entities including people, furniture and automobiles. These dynamic environments pose challenges to visual simultaneous…

Robotics · Computer Science 2020-03-26 Pushyami Kaveti , Sammie Katt , Hanumant Singh

Light field cameras have many advantages over traditional cameras, as they allow the user to change various camera settings after capture. However, capturing light fields requires a huge bandwidth to record the data: a modern light field…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Ting-Chun Wang , Jun-Yan Zhu , Nima Khademi Kalantari , Alexei A. Efros , Ravi Ramamoorthi

We study the problem of deblurring light fields of general 3D scenes captured under 3D camera motion and present both theoretical and practical contributions. By analyzing the motion-blurred light field in the primal and Fourier domains, we…

Computer Vision and Pattern Recognition · Computer Science 2017-04-19 Pratul P. Srinivasan , Ren Ng , Ravi Ramamoorthi

Light field cameras capture the 3D information in a scene with a single exposure. This special feature makes light field cameras very appealing for a variety of applications: from post-capture refocus, to depth estimation and image-based…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Mattia Rossi , Pascal Frossard

This paper explores the problem of reconstructing high-resolution light field (LF) images from hybrid lenses, including a high-resolution camera surrounded by multiple low-resolution cameras. The performance of existing methods is still…

Image and Video Processing · Electrical Eng. & Systems 2023-06-21 Jing Jin , Mantang Guo , Junhui Hou , Hui Liu , Hongkai Xiong

Inspired by the recent advances in implicitly representing signals with trained neural networks, we aim to learn a continuous representation for narrow-baseline 4D light fields. We propose an implicit representation model for 4D light…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Paramanand Chandramouli , Hendrik Sommerhoff , Andreas Kolb

We present a user-friendly image editing system that supports a drag-and-drop object insertion (where the user merely drags objects into the image, and the system automatically places them in 3D and relights them appropriately),…

Graphics · Computer Science 2020-01-01 Kevin Karsch , Kalyan Sunkavalli , Sunil Hadap , Nathan Carr , Hailin Jin , Rafael Fonte , Michael Sittig

The effective design of visual computing systems depends heavily on the anticipation of visual attention, or saliency. While visual attention is well investigated for conventional 2D images and video, it is nevertheless a very active…

Computer Vision and Pattern Recognition · Computer Science 2020-08-10 Ailbhe Gill , Emin Zerman , Cagri Ozcinar , Aljosa Smolic

We present an approach for interactively scanning highly reflective objects with a commodity RGBD sensor. In addition to shape, our approach models the surface light field, encoding scene appearance from all directions. By factoring the…

Computer Vision and Pattern Recognition · Computer Science 2018-09-07 Jeong Joon Park , Richard Newcombe , Steve Seitz

Hand-held light field (LF) cameras have unique advantages in computer vision such as 3D scene reconstruction and depth estimation. However, the related applications are limited by the ultra-small baseline, e.g., leading to the extremely low…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Xiao Huo , Dongyang Jin , Saiping Zhang , Fuzheng Yang
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