Results 81 to 90 of about 36,270 (292)

Attention Residual Hybrid Network for Unmanned Aerial Vehicles Hyperspectral Image Classification

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Unmanned aerial vehicle (UAV) hyperspectral images are endowed with abundant spectral information and spatial texture details, which are crucial for the precise classification and monitoring of terrestrial features.
Zhen Zhang, Linhuan Jiang, Bo-Hui Tang, Jianchen Liu, Qingwang Wang, Yabin Hu, Liang Huang, Zhitao Fu   +7 more
doaj   +1 more source

Hyperspectral imagery: clutter adaptation in anomaly detection [PDF]

IEEE Transactions on Information Theory, 2000
Summary: Hyperspectral sensors are passive sensors that simultaneously record images for hundreds of contiguous and narrowly spaced regions of the electromagnetic spectrum. Each image corresponds to the same ground scene, thus creating a cube of images that contain both spatial and spectral information about the objects and backgrounds in the scene. In
Schweizer, Susan M., Moura, José M. F.
openaire   +2 more sources

Single‐Particle Mid‐Infrared Photothermal Imaging Reveals Hidden Heterogeneity in Real‐World Micro‐ and Nanoplastics

Advanced Science, EarlyView.
Mid‐infrared photothermal imaging enables multidimensional profiling of micro‐ and nanoplastics in bottled water. A total of 9.9 × 104 particles L−1 is detected, with 64% in the nanoscale regime. Spectral evolution, including peak narrowing and band shifts, reveals local chain reorganization in polyethylene terephthalate (PET), highlighting intrinsic ...
Xinyu Deng, Yongqing Zhang, Xiaobin Tang, Hyeon Jeong Lee, Delong Zhang   +4 more
wiley   +1 more source

Mapping urban impervious surfaces from an airborne hyperspectral imagery using the object-oriented classification approach

MATEC Web of Conferences, 2017
The objective of this research is to explore the capabilities of the hyperspectral imagery in mapping the urban impervious objects and identifying the surface materials using an object-oriented approach.
Aguejdad Rahim, Serradj Aziz, Weber Christiane   +2 more
doaj   +1 more source

DSmT Based RX Detector for Hyperspectral Imagery [PDF]

2012 Symposium on Photonics and Optoelectronics, 2012
Anomaly detection is very useful for hyperspectral detection with no a priori information of spectral signature. However, most prevailing anomaly detectors are applied directly to the all-bands data without considering the characteristics of hyperspectral imagery in local spectrum range and some computation problem incurred from high dimensional data ...
He, Lin, Peipei Zhang, Weitong Ruan
openaire   +1 more source

Engineered Interfacial Control for Suppression of Phase Instability: Operando Visualization from Device to Module Scale

Advanced Science, EarlyView.
Operando real‐time current density–voltage absorption spectroscopy visualizes spatial phase evolution in mixed‐halide perovskites from device to module scale. Phase instability preferentially initiates in regions with insufficient carrier extraction, revealing electrical boundary conditions as governing factors.
Hangyeol Choi, Soo Woong Jeon, Wookyung Jeon, You‐Hyun Seo, Gill Sang Han, Myunghun Shin, Ji‐Sang Park, Jun Hong Noh, Yohan Yoon   +8 more
wiley   +1 more source

Engineering Nanoemulsions to Maximize NIR‐II Fluorescence and Preserve Photothermal Performance of a Novel Boron Difluoride Formazanate Dye

Angewandte Chemie, EarlyView.
An oil‐in‐water nanoemulsion transforms a boron difluoride formazanate (BDF) dye into a dual‐modal imaging‐guided theranostic agent (BDF‐NE). Its nonpolar oil core maximizes NIR‐II fluorescence while maintaining strong photoacoustic contrast to guide photothermal therapy with high photostability and 66.8% photothermal conversion efficiency, achieving ...
Nahyun Kwon, Francis L. Buguis, Theo Husby, Suhjung Chun, Dongling Zhang, Jiaze Wu, Benjamin Rehl, Binbing Ling, Umar Iqbal, Melissa Washington, Angie Verner, Kai Huang, Juan Chen, Joe B. Gilroy, Gang Zheng   +14 more
wiley   +2 more sources

Empirical Analysis of Aerial Camera Filters for Shoreline Mapping [PDF]

, 2005
Accurate, up-to-date national shoreline is critical in defining the territorial limits of the Unites States, updating nautical charts, and managing coastal resources.
Parrish, Christopher, Sault, Maryellen, Sellars, Jon, White, Stephen A   +3 more
core   +2 more sources

A Universal Approach to Enhancing Silicon Hot‐Carrier Photodetectors for CMOS‐Compatible SWIR Imaging

Advanced Science, EarlyView.
Silicon hot‐carrier photodetectors offer a CMOS‐compatible pathway for SWIR detection but suffer from intrinsically low quantum efficiency. Here, we introduce a quasi‐generalized antireflection coating (QARC) that universally enhances optical absorption and quantum efficiency, enabling the first CMOS‐compatible SWIR imaging with silicon hot‐carrier ...
Eui‐Hyoun Ryu, Hyun Woo Ko, Sunghyun Hwang, Nayeon Kim, Ji‐Hwan Son, Sunghyun Han, Paul Hongsuck Seo, Jisoo Hong, Sang‐Jun Kim, Seon Kyu Yoon, Min‐Chul Park, In‐Ho Lee   +11 more
wiley   +1 more source

A COMPARISON OF LIDAR REFLECTANCE AND RADIOMETRICALLY CALIBRATED HYPERSPECTRAL IMAGERY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
In order to retrieve results comparable under different flight parameters and among different flight campaigns, passive remote sensing data such as hyperspectral imagery need to undergo a radiometric calibration.
A. Roncat, C. Briese, C. Briese, N. Pfeifer   +3 more
doaj   +1 more source