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The increase in non-biodegradable waste is a worldwide concern. Recycling facilities play a crucial role, but their automation is hindered by the complex characteristics of waste recycling lines like clutter or object deformation. In…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Sara Casao , Fernando Peña , Alberto Sabater , Rosa Castillón , Darío Suárez , Eduardo Montijano , Ana C. Murillo

Spectral imaging is a method in medical x-ray imaging to extract information about the object constituents by the material-specific energy dependence of x-ray attenuation. Contrast-enhanced spectral imaging has been thoroughly investigated,…

Medical Physics · Physics 2021-01-26 Erik Fredenberg , Magnus Aslund , Bjorn Cederstrom , Mats Lundqvist , Mats Danielsson

This study addresses the classification of defects in apples as a crucial measure to mitigate economic losses and optimize the food supply chain. An innovative approach is employed that integrates images from the visible spectrum and 660 nm…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Omar Coello , Moisés Coronel , Darío Carpio , Boris Vintimilla , Luis Chuquimarca

Multispectral imagers that capture spatial and spectral information are of growing importance in various fields, particularly in remote sensing and metrology. To enable integrated snapshot multispectral imagers and eliminate the drawbacks…

Miniaturized photodetectors are becoming increasingly sought-after components for a range of next generation technologies, such as autonomous vehicles, integrated wearable devices, or gadgets embedded in the Internet of Things. A major…

Since camera modules become more and more affordable, multispectral camera arrays have found their way from special applications to the mass market, e.g., in automotive systems, smartphones, or drones. Due to multiple modalities, the…

Image and Video Processing · Electrical Eng. & Systems 2024-11-08 Frank Sippel , Nils Genser , Hannah Och , Jürgen Seiler , André Kaup

Spectral variability is one of the major issue when conducting hyperspectral unmixing. Within a given image composed of some elementary materials (herein referred to as endmember classes), the spectral signature characterizing these classes…

Image and Video Processing · Electrical Eng. & Systems 2019-06-26 Tatsumi Uezato , Mathieu Fauvel , Nicolas Dobigeon

In the domain of Few-Shot Image Classification, operating with as little as one example per class, the presence of image ambiguities stemming from multiple objects or complex backgrounds can significantly deteriorate performance. Our…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Aymane Abdali , Bartosz Boguslawski , Lucas Drumetz , Vincent Gripon

Multispectral object detection, utilizing RGB and TIR (thermal infrared) modalities, is widely recognized as a challenging task. It requires not only the effective extraction of features from both modalities and robust fusion strategies,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-28 Chen Zhou , Peng Cheng , Junfeng Fang , Yifan Zhang , Yibo Yan , Xiaojun Jia , Yanyan Xu , Kun Wang , Xiaochun Cao

By employing the lens antenna array, beamspace MIMO can utilize beam selection to reduce the number of required RF chains in mmWave massive MIMO systems without obvious performance loss. However, to achieve the capacityapproaching…

Information Theory · Computer Science 2016-07-19 Linglong Dai , Xinyu Gao , Shuangfeng Han , Chih-Lin I , Xiaodong Wang

We simulate multi-color surveys, which use the same telescope time on different filter sets of broad-band and medium-band filters. We use a photometric classification method for identifying stars, galaxies and quasars and for estimating…

Astrophysics · Physics 2007-05-23 Christian Wolf , Klaus Meisenheimer , Hermann-Josef Röser

With the availability of multi-object spectrometers and the designing \& running of some large scale sky surveys, we are obtaining massive spectra. Therefore, it becomes more and more important to deal with the massive spectral data…

Instrumentation and Methods for Astrophysics · Physics 2023-12-27 Xiangru Li , Yangtao Lin , Kaibin Qiu

Recent advances in snapshot multispectral (MS) imaging have enabled compact, low-cost spectral sensors for consumer and mobile devices. By capturing richer spectral information than conventional RGB sensors, these systems can enhance key…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Luca Cogo , Marco Buzzelli , Simone Bianco , Javier Vazquez-Corral , Raimondo Schettini

A new optimized band-pass filter for wavelengths is proposed to increase the optical temporal coherence of thermal light. The choice of parameters for this filter is based on solving an optimization problem for finding the most intensely…

Optics · Physics 2019-05-22 Anatoliy I Fisenko , Vladimir F Lemberg

Hyperspectral image segmentation is crucial for many fields such as agriculture, remote sensing, biomedical imaging, battlefield sensing and astronomy. However, the challenge of hyper and multi spectral imaging is its large data footprint.…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Jackson Arnold , Sophia Rossi , Chloe Petrosino , Ethan Mitchell , Sanjeev J. Koppal

This paper concerns a new optimization problem arising in the management of a multi-object spectrometer with a configurable slit unit. The field of view of the spectrograph is divided into contiguous and parallel spatial bands, each one…

Instrumentation and Methods for Astrophysics · Physics 2021-01-12 Juan-José Salazar-González

Earth observing satellites carrying multi-spectral sensors are widely used to monitor the physical and biological states of the atmosphere, land, and oceans. These satellites have different vantage points above the earth and different…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Thomas Vandal , Daniel McDuff , Weile Wang , Andrew Michaelis , Ramakrishna Nemani

The spectrophotometric characterization of high efficiency, optically-active samples such as light-emitting organic bulks and thin films can be problematic because their broad-band luminescence is detected together with the monochromatic…

Instrumentation and Detectors · Physics 2012-03-20 R. M. Montereali , M. A. Vincenti , E. Nichelatti , F. Di Pompeo , E. Segreto , N. Canci , F. Cavanna

Spectrum sensing is an essential enabling functionality for cognitive radio networks to detect spectrum holes and opportunistically use the under-utilized frequency bands without causing harmful interference to legacy networks. This paper…

Information Theory · Computer Science 2016-11-18 Zhi Quan , Shuguang Cui , Ali H. Sayed , H. Vincent Poor

Detecting and classifying targets in video streams from surveillance cameras is a cumbersome, error-prone and expensive task. Often, the incurred costs are prohibitive for real-time monitoring. This leads to data being stored locally or…

Computer Vision and Pattern Recognition · Computer Science 2017-11-10 Lukas Cavigelli , Dominic Bernath , Michele Magno , Luca Benini
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