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Pose-free neural radiance fields (NeRF) aim to train NeRF with unposed multi-view images and it has achieved very impressive success in recent years. Most existing works share the pipeline of training a coarse pose estimator with rendered…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Jiahui Zhang , Fangneng Zhan , Yingchen Yu , Kunhao Liu , Rongliang Wu , Xiaoqin Zhang , Ling Shao , Shijian Lu

In this paper we deal with the problem of chromaticity, i.e. apparent position variation of stellar images with their spectral distribution, using neural networks to analyse and process astronomical images. The goal is to remove this…

天体物理学 · 物理学 2009-11-13 M. Gai , R. Cancelliere

We present a method for the accurate 3D reconstruction of partly-symmetric objects. We build on the strengths of recent advances in neural reconstruction and rendering such as Neural Radiance Fields (NeRF). A major shortcoming of such…

计算机视觉与模式识别 · 计算机科学 2022-06-14 Eldar Insafutdinov , Dylan Campbell , João F. Henriques , Andrea Vedaldi

Due to its ability to work in non-line-of-sight and low-light environments, radio frequency (RF) imaging technology is expected to bring new possibilities for embodied intelligence and multimodal sensing. However, widely used RF devices…

图像与视频处理 · 电气工程与系统科学 2025-04-23 Fei Shang , Haohua Du , Dawei Yan , Panlong Yang , Xiang-Yang Li

Implicit neural representation (INR) has become the standard approach for arbitrary-scale image super-resolution (ASSR). To date, no empirical study has systematically examined the effectiveness of existing methods, nor investigated the…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Tayyab Nasir , Daochang Liu , Ajmal Mian

On the one hand, artificial neural networks have many successful applications in the field of machine learning and optimization. On the other hand, interferometers are integral parts of any field that deals with waves such as optics,…

量子物理 · 物理学 2023-10-26 Arun Sehrawat

Knowledge of terrain's physical properties inferred from color images can aid in making efficient robotic locomotion plans. However, unlike image classification, it is unintuitive for humans to label image patches with physical properties.…

机器人学 · 计算机科学 2023-11-03 Gabriel B. Margolis , Xiang Fu , Yandong Ji , Pulkit Agrawal

We propose a material appearance modeling neural network for visualizing plausible, spatially-varying materials under diverse view and lighting conditions, utilizing only a single photograph of a material under co-located light and view as…

计算机视觉与模式识别 · 计算机科学 2024-06-28 Jay Idema , Pieter Peers

Aerial imagery has been increasingly adopted in mission-critical tasks, such as traffic surveillance, smart cities, and disaster assistance. However, identifying objects from aerial images faces the following challenges: 1) objects of…

计算机视觉与模式识别 · 计算机科学 2020-01-24 Ziyang Tang , Xiang Liu , Guangyu Shen , Baijian Yang

Recent advances in image data processing through machine learning and especially deep neural networks (DNNs) allow for new optimization and performance-enhancement schemes for radiation detectors and imaging hardware through data-endowed…

仪器与探测器 · 物理学 2024-02-23 S. Lin , S. Ning , H. Zhu , T. Zhou , C. L. Morris , S. Clayton , M. Cherukara , R. T. Chen , Z. Wang

We study the use of parametric building information modeling (BIM) to automatically generate training data for artificial neural networks (ANNs) to recognize building objects in photos. Teaching artificial intelligence (AI) machines to…

计算机视觉与模式识别 · 计算机科学 2023-02-13 Mohammad Alawadhi , Wei Yan

Light scattered from multiple surfaces can be used to retrieve information of hidden environments. However, full three-dimensional retrieval of an object hidden from view by a wall has only been achieved with scanning systems and requires…

Image retrieval under varying illumination conditions, such as day and night images, is addressed by image preprocessing, both hand-crafted and learned. Prior to extracting image descriptors by a convolutional neural network, images are…

计算机视觉与模式识别 · 计算机科学 2019-08-27 Tomas Jenicek , Ondřej Chum

Neural Radiance Fields (NeRFs) have demonstrated prominent performance in novel view synthesis. However, their input heavily relies on image acquisition under normal light conditions, making it challenging to learn accurate scene…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Min Wang , Xin Huang , Guoqing Zhou , Qifeng Guo , Qing Wang

Ferromagnetic resonance (FMR) spectroscopy is a powerful method for quantifying internal magnetic anisotropy fields in nanoparticles, which is important in a wide range of biomedical and storage applications. The interpretation of FMR…

材料科学 · 物理学 2022-06-02 David Slay , Michalis Charilaou

The problem of inferring object shape from a single 2D image is underconstrained. Prior knowledge about what objects are plausible can help, but even given such prior knowledge there may still be uncertainty about the shapes of occluded…

计算机视觉与模式识别 · 计算机科学 2022-11-01 Matthew D. Hoffman , Tuan Anh Le , Pavel Sountsov , Christopher Suter , Ben Lee , Vikash K. Mansinghka , Rif A. Saurous

The absorption of light by molecules in the atmosphere of Earth is a complication for ground-based observations of astrophysical objects. Comprehensive information on various molecular species is required to correct for this so called…

天体物理仪器与方法 · 物理学 2021-11-18 Rune D. Kjærsgaard , Aaron Bello-Arufe , Alexander D. Rathcke , Lars A. Buchhave , Line K. H. Clemmensen

We introduce DeepIR, a new thermal image processing framework that combines physically accurate sensor modeling with deep network-based image representation. Our key enabling observations are that the images captured by thermal sensors can…

图像与视频处理 · 电气工程与系统科学 2021-08-27 Vishwanath Saragadam , Akshat Dave , Ashok Veeraraghavan , Richard Baraniuk

We present data preprocessing based on an artificial neural network to estimate the parameters of the X-ray emission spectra of a single-temperature thermal plasma. The method finds appropriate parameters close to the global optimum. The…

天体物理仪器与方法 · 物理学 2018-05-15 Y. Ichinohe , S. Yamada , N. Miyazaki , S. Saito

Neural Radiance Field (NeRF) has enabled novel view synthesis with high fidelity given images and camera poses. Subsequent works even succeeded in eliminating the necessity of pose priors by jointly optimizing NeRF and camera pose. However,…

计算机视觉与模式识别 · 计算机科学 2023-11-09 Injae Kim , Minhyuk Choi , Hyunwoo J. Kim