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Many algorithms have been developed to solve the inverse problem of coded aperture snapshot spectral imaging (CASSI), i.e., recovering the 3D hyperspectral images (HSIs) from a 2D compressive measurement. In recent years, learning-based…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Yuanhao Cai , Jing Lin , Xiaowan Hu , Haoqian Wang , Xin Yuan , Yulun Zhang , Radu Timofte , Luc Van Gool

Single-photon sensitive detectors like Silicon Photomultipliers are widely used in many medical imaging applications. By using detectors with position resolutions, it is possible to build compact photodetector readouts with reduced number…

Over-segmentation of an image into superpixels has become a useful tool for solving various problems in image processing and computer vision. Reflection symmetry is quite prevalent in both natural and man-made objects and is an essential…

计算机视觉与模式识别 · 计算机科学 2018-08-13 Rajendra Nagar , Shanmuganathan Raman

Change detection (CD) is an important application of remote sensing, which provides timely change information about large-scale Earth surface. With the emergence of hyperspectral imagery, CD technology has been greatly promoted, as…

计算机视觉与模式识别 · 计算机科学 2023-04-06 Qi Wang , Zhenghang Yuan , Qian Du , Xuelong Li

Event cameras do not produce images, but rather a continuous flow of events, which encode changes of illumination for each pixel independently and asynchronously. While they output temporally rich information, they lack any depth…

计算机视觉与模式识别 · 计算机科学 2023-03-01 Vincent Brebion , Julien Moreau , Franck Davoine

Event cameras or neuromorphic cameras mimic the human perception system as they measure the per-pixel intensity change rather than the actual intensity level. In contrast to traditional cameras, such cameras capture new information about…

计算机视觉与模式识别 · 计算机科学 2016-08-05 Christian Reinbacher , Gottfried Graber , Thomas Pock

A class of vision problems, less commonly studied, consists of detecting objects in imagery obtained from physics-based experiments. These objects can span in 4D (x, y, z, t) and are visible as disturbances (caused due to physical…

计算机视觉与模式识别 · 计算机科学 2019-01-23 Deepak K. Gupta , Rohit K. Shrivastava , Suhas Phadke , Jeroen Goudswaard

We use a science-grade Skipper Charge Coupled Device (Skipper-CCD) operating in a low-radiation background environment to develop a semi-empirical model that characterizes the origin of single-electron events in CCDs. We identify, separate,…

In this paper a detailed simulation of irradiated pixel sensors was used to investigate the effects of radiation damage on the position determination and optimize the hit reconstruction algorithms. The simulation implements a model of…

仪器与探测器 · 物理学 2009-11-11 E. Alagoz , V. Chiochia , M. Swartz

Established image recovery methods in fast ultrasound imaging, e.g. delay-and-sum, trade the image quality for the high frame rate. Cutting-edge inverse scattering methods based on compressed sensing (CS) disrupt this tradeoff via a priori…

医学物理 · 物理学 2019-03-15 Martin F. Schiffner

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…

图像与视频处理 · 电气工程与系统科学 2021-08-29 Yingqian Wang , Jungang Yang , Yulan Guo , Chao Xiao , Wei An

Single-pixel cameras based on the concepts of compressed sensing (CS) leverage the inherent structure of images to retrieve them with far fewer measurements and operate efficiently over a significantly broader spectral range than…

计算机视觉与模式识别 · 计算机科学 2016-06-17 Qiang Guo , Hongwei Chen , Yuxi Wang , Yong Guo , Peng Liu , Xiurui Zhu , Zheng Cheng , Zhenming Yu , Minghua Chen , Sigang Yang , Shizhong Xie

The computer vision community has developed numerous techniques for digitally restoring true scene information from single-view degraded photographs, an important yet extremely ill-posed task. In this work, we tackle image restoration from…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Yucheng Mao , Boyang Wang , Nilesh Kulkarni , Jeong Joon Park

Event cameras have the ability to capture asynchronous per-pixel brightness changes, called "events", offering advantages over traditional frame-based cameras for computer vision applications. Efficiently coding event data is critical for…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Abdelrahman Seleem , André F. R. Guarda , Nuno M. M. Rodrigues , Fernando Pereira

A charge-coupled device (CCD) is a standard imager in optical region in which the image quality is limited by its pixel size. CCDs also function in X-ray region but with substantial differences in performance. An optical photon generates…

天体物理学 · 物理学 2009-11-07 E. Miyata , M. Miki , H. Tsunemi , J. Hiraga , H. Kouno , K. Miyaguchi

Coherent X-ray Diffraction Imaging (CXDI) technique offers unique insights into the nanoscale world, enabling the reconstruction of 3D structures with a nanoscale resolution achieved through computational phase reconstruction from measured…

计算物理 · 物理学 2024-03-26 Fangzhou Ai , Oleg Shpyrko , Vitaliy Lomakin

Event cameras asynchronously capture brightness changes with low latency, high temporal resolution, and high dynamic range. However, annotation of event data is a costly and laborious process, which limits the use of deep learning methods…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Simon Klenk , David Bonello , Lukas Koestler , Nikita Araslanov , Daniel Cremers

Composed Image Retrieval (CIR) is a challenging task that aims to retrieve the target image with a multimodal query, i.e., a reference image, and its complementary modification text. As previous supervised or zero-shot learning paradigms…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Bohan Hou , Haoqiang Lin , Haokun Wen , Meng Liu , Mingzhu Xu , Xuemeng Song

We propose SIR, an efficient method to decompose differentiable shadows for inverse rendering on indoor scenes using multi-view data, addressing the challenges in accurately decomposing the materials and lighting conditions. Unlike previous…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Xiaokang Wei , Zhuoman Liu , Ping Li , Yan Luximon

Anomalous change detection (ACD) is an important problem in remote sensing image processing. Detecting not only pervasive but also anomalous or extreme changes has many applications for which methodologies are available. This paper…

计算机视觉与模式识别 · 计算机科学 2020-12-10 José A. Padrón-Hidalgo , Valero Laparra , Nathan Longbotham , Gustau Camps-Valls