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We use convolutional neural networks to recover images optically down-sampled by $6.7\times$ using coherent aperture synthesis over a 16 camera array. Where conventional ptychography relies on scanning and oversampling, here we apply…

图像与视频处理 · 电气工程与系统科学 2022-02-09 Chengyu Wang , Minghao Hu , Yuzuru Takashima , Timothy J. Schulz , David J. Brady

We present Worldsheet, a method for novel view synthesis using just a single RGB image as input. The main insight is that simply shrink-wrapping a planar mesh sheet onto the input image, consistent with the learned intermediate depth,…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Ronghang Hu , Nikhila Ravi , Alexander C. Berg , Deepak Pathak

Here we introduce three-dimensional single-shot ptychography (3DSSP). 3DSSP leverages an additional constraint unique to the single-shot geometry to deconvolve multiple 2D planes of a 3D object. Numeric simulations and analytic calculations…

图像与视频处理 · 电气工程与系统科学 2020-07-15 David Goldberger , Jonathan Barolak , Charles G. Durfee , Daniel E. Adams

A pseudoscopic (inverted depth) image made with spiral diffracting elements intermediated by a pinhole is explained by its symmetry properties. The whole process is made under common white light illumination and allows the projection of…

光学 · 物理学 2009-11-13 Jose J. Lunazzi , Noemi I. R. Rivera , Daniel S. F. Magalhaes

Human re-rendering from a single image is a starkly under-constrained problem, and state-of-the-art algorithms often exhibit undesired artefacts, such as over-smoothing, unrealistic distortions of the body parts and garments, or implausible…

计算机视觉与模式识别 · 计算机科学 2021-01-12 Kripasindhu Sarkar , Dushyant Mehta , Weipeng Xu , Vladislav Golyanik , Christian Theobalt

This paper addresses the problem of monocular 3D human shape and pose estimation from an RGB image. Despite great progress in this field in terms of pose prediction accuracy, state-of-the-art methods often predict inaccurate body shapes. We…

计算机视觉与模式识别 · 计算机科学 2020-09-23 Akash Sengupta , Ignas Budvytis , Roberto Cipolla

We propose Differentiable Stereopsis, a multi-view stereo approach that reconstructs shape and texture from few input views and noisy cameras. We pair traditional stereopsis and modern differentiable rendering to build an end-to-end model…

计算机视觉与模式识别 · 计算机科学 2022-09-27 Shubham Goel , Georgia Gkioxari , Jitendra Malik

Textural and structural features can be regraded as "two-view" feature sets. Inspired by the recent progress in multi-view learning, we propose a novel two-view classification method that models each feature set and optimizes the process of…

计算机视觉与模式识别 · 计算机科学 2019-08-27 Samah Khawaled , Michael Zibulevsky , Yehoshua Y. Zeevi

This paper provides a novel approach to stitching surface images of rotationally symmetric parts. It presents a process pipeline that uses a feature-based stitching approach to create a distortion-free and true-to-life image from a video…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Tobias Schlagenhauf , Tim Brander , Juergen Fleischer

Single-view textured human reconstruction aims to reconstruct a clothed 3D digital human by inputting a monocular 2D image. Existing approaches include feed-forward methods, limited by scarce 3D human data, and diffusion-based methods,…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Wenhao Shen , Gangjian Zhang , Jianfeng Zhang , Yu Feng , Nanjie Yao , Xuanmeng Zhang , Hao Wang

Ptychography is a powerful imaging technique that is used in a variety of fields, including materials science, biology, and nanotechnology. However, the accuracy of the reconstructed ptychography image is highly dependent on the accuracy of…

应用物理 · 物理学 2024-06-03 Ming Du , Tao Zhou , Junjing Deng , Daniel J. Ching , Steven Henke , Mathew J. Cherukara

Random projections offer an appealing and flexible approach to a wide range of large-scale statistical problems. They are particularly useful in high-dimensional settings, where we have many covariates recorded for each observation. In…

统计方法学 · 统计学 2019-11-26 Timothy I. Cannings

Image stitching aim to align two images taken from different viewpoints into one seamless, wider image. However, when the 3D scene contains depth variations and the camera baseline is significant, noticeable parallax occurs-meaning the…

计算机视觉与模式识别 · 计算机科学 2025-12-25 Muhua Zhu , Xinhao Jin , Chengbo Wang , Yongcong Zhang , Yifei Xue , Tie Ji , Yizhen Lao

Estimating metric relative camera pose from a pair of images is of great importance for 3D reconstruction and localisation. However, conventional two-view pose estimation methods are not metric, with camera translation known only up to a…

计算机视觉与模式识别 · 计算机科学 2025-09-18 Yumin Li , Dylan Campbell

Tomographic volumetric 3D printing offers layer free, rapid fabrication of objects with high design freedom, but is limited to relatively small curing volumes because of the optical constraints imposed by an assumed need for telecentricity.…

光学 · 物理学 2025-10-10 Hossein Safari , S. Kaveh Hedayati , Aminul Islam , Yi Yang

We suggest a rasterization pipeline tailored towards the need of head-mounted displays (HMD), where latency and field-of-view requirements pose new challenges beyond those of traditional desktop displays. Instead of rendering and warping…

图形学 · 计算机科学 2018-06-15 Tobias Ritschel , Sebastian Friston , Anthony Steed

Recent progress in single-image 3D generation highlights the importance of multi-view coherency, leveraging 3D priors from large-scale diffusion models pretrained on Internet-scale images. However, the aspect of novel-view diversity remains…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Sangmin Woo , Byeongjun Park , Hyojun Go , Jin-Young Kim , Changick Kim

Image registration has traditionally been done using two distinct approaches: learning based methods, relying on robust deep neural networks, and optimization-based methods, applying complex mathematical transformations to warp images…

计算机视觉与模式识别 · 计算机科学 2024-01-22 Gabriel De Araujo , Shanlin Sun , Xiaohui Xie

In neuromorphic computing, artificial synapses provide a multi-weight conductance state that is set based on inputs from neurons, analogous to the brain. Additional properties of the synapse beyond multiple weights can be needed, and can…

Recently, the progress of learning-by-synthesis has proposed a training model for synthetic images, which can effectively reduce the cost of human and material resources. However, due to the different distribution of synthetic images…

计算机视觉与模式识别 · 计算机科学 2020-02-17 Yuxiao Yan , Yang Yan , Jinjia Peng , Huibing Wang , Xianping Fu