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We report an optimal extraction methodology, for the reduction of multi-object fibre spectroscopy data, operating in the regime of tightly packed (and hence significantly overlapping) fibre profiles. The routine minimises crosstalk between…

天体物理仪器与方法 · 物理学 2014-11-20 R. Sharp , M. N. Birchall

We have demonstrated the capability of spectral multiplexing in multi-distance diffractive imaging, enabling the reconstruction of samples with diverse spectral responses. While previous methods like ptychography utilize redundancy in…

光学 · 物理学 2024-05-31 Qijun You , Lingshuo Meng , Yun Gao , Qing Liao , Wei Cao , Peixiang Lu

The segmentation of video sequences into foreground and background regions is a low-level process commonly used in video content analysis and smart surveillance applications. Using a multispectral camera setup can improve this process by…

计算机视觉与模式识别 · 计算机科学 2018-12-27 Pierre-Luc St-Charles , Guillaume-Alexandre Bilodeau , Robert Bergevin

We propose Multi-spectral Neural Radiance Fields(Spec-NeRF) for jointly reconstructing a multispectral radiance field and spectral sensitivity functions(SSFs) of the camera from a set of color images filtered by different filters. The…

图像与视频处理 · 电气工程与系统科学 2023-10-23 Jiabao Li , Yuqi Li , Ciliang Sun , Chong Wang , Jinhui Xiang

Archetypal scenarios for change detection generally consider two images acquired through sensors of the same modality. However, in some specific cases such as emergency situations, the only images available may be those acquired through…

计算机视觉与模式识别 · 计算机科学 2016-09-21 Vinicius Ferraris , Nicolas Dobigeon , Qi Wei , Marie Chabert

Using light spectra is an essential element in many applications, for example, in material classification. Often this information is acquired by using a hyperspectral camera. Unfortunately, these cameras have some major disadvantages like…

图像与视频处理 · 电气工程与系统科学 2022-09-19 Frank Sippel , Jürgen Seiler , André Kaup

Millimeter wave multiple-input multiple-output (MIMO) communication systems must operate over sparse wireless links and will require large antenna arrays to provide high throughput. To achieve sufficient array gains, these systems must…

信号处理 · 电气工程与系统科学 2019-04-17 Wei Zhang , Taejoon Kim , David J. Love

Hyperspectral imaging sensors are becoming increasingly popular in robotics applications such as agriculture and mining, and allow per-pixel thematic classification of materials in a scene based on their unique spectral signatures.…

计算机视觉与模式识别 · 计算机科学 2016-11-29 Lloyd Windrim , Rishi Ramakrishnan , Arman Melkumyan , Richard Murphy

Hyperspectral images provide abundant spatial and spectral information that is very valuable for material detection in diverse areas of practical science. The high-dimensions of data lead to many processing challenges that can be addressed…

计算机视觉与模式识别 · 计算机科学 2020-05-19 Saeideh Ghanbari Azar , Saeed Meshgini , Tohid Yousefi Rezaii , Soosan Beheshti

The Conditional Random Field as a Recurrent Neural Network layer is a recently proposed algorithm meant to be placed on top of an existing Fully-Convolutional Neural Network to improve the quality of semantic segmentation. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2018-07-20 Miguel Monteiro , Mário A. T. Figueiredo , Arlindo L. Oliveira

Sensor selection is a useful method to help reduce data throughput, as well as computational, power, and hardware requirements, while still maintaining acceptable performance. Although minimizing the Cram\'er-Rao bound has been adopted…

信号处理 · 电气工程与系统科学 2023-08-01 Costas A. Kokke , Mario Coutiño , Laura Anitori , Richard Heusdens , Geert Leus

Hyperspectral imagery is composed of huge amount of data which creates significant transmission latencies for communication systems. It is vital to decrease the huge data size before transmitting the Hyperspectral imagery. Besides, large…

图像与视频处理 · 电气工程与系统科学 2026-01-27 Onur Haliloğlu , Ufuk Sakarya , B. Uğur Töreyin , Orhan Gazi

Smoke segmentation is critical for wildfire management and industrial safety applications. Traditional visible-light-based methods face limitations due to insufficient spectral information, particularly struggling with cloud interference…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Lujian Yao , Haitao Zhao , Xianghai Kong , Yuhan Xu

Beamspace multi-input multi-output (MIMO) relying on lens antenna arrays can significantly reduce the number of radio-frequency chains in millimeter-wave (mmWave) communication systems through beam selection. However, the beamforming gain…

信号处理 · 电气工程与系统科学 2020-04-20 Chenghao Feng , Wenqian Shen , Jianping An

Band selection plays a crucial role in hyperspectral image classification by removing redundant and noisy bands and retaining discriminative ones. However, most existing deep learning-based methods are aimed at dealing with a specific band…

计算机视觉与模式识别 · 计算机科学 2024-06-13 Jie Feng , Xiaojian Zhong , Di Li , Weisheng Dong , Ronghua Shang , Licheng Jiao

Spectrum sensing is a fundamental operation in cognitive radio environment. It gives information about spectrum availability by scanning the bands. Usually a fixed amount of time is given to scan individual bands. Most of the times,…

信息论 · 计算机科学 2016-06-10 Garimella Rama Murthy , Rhishi Pratap Singh , Samdarshi Abhijeet , Sachin Chaudhary

The use of multichannel data in line spectral estimation (or frequency estimation) is common for improving the estimation accuracy in array processing, structural health monitoring, wireless communications, and more. Recently proposed…

信息论 · 计算机科学 2018-10-15 Zai Yang , Jinhui Tang , Yonina C. Eldar , Lihua Xie

Mid-infrared photodetectors are susceptible to background noise since every object in the surroundings emits thermal radiation from different directions. To reduce this background noise and enhance signal-to-noise ratio of mid-infrared…

光学 · 物理学 2025-04-30 Ziwei Fan , Taeseung Hwang , Yixin Chen , Zi Jing Wong

Structured illumination can reject out-of-focus signal from a sample, enabling high-speed and high-contrast imaging over large areas with widefield detection optics. Currently, this optical-sectioning technique is limited by image…

Hyperspectral imaging systems collect and process information from specific wavelengths across the electromagnetic spectrum. The fusion of multi-spectral bands in the visible spectrum has been exploited to improve face recognition…

计算机视觉与模式识别 · 计算机科学 2019-08-27 Fariborz Taherkhani , Jeremy Dawson , Nasser M. Nasrabadi