نتایج جستجو برای: hyperspectral imagery

تعداد نتایج: 57811  

2011
Zheng Zhou Yihua Tan Jian Liu Syed Ahsan Ishtiaque Ankush Khandelwal

“Compression of hyperspectral images holds importance because of bad transmission capability of satellites. The project is the implementation of the paper-“Satellite Hyperspectral Imagery Compression Algorithm Based on Adaptive Band Regrouping”. But during the course of the implementation many modifications have been made and some new concepts have been introduced. We have made the given regrou...

1999
Randall B. Smith Dmitry Frolov

For much of the past decade, imaging spectrometry has been primarily a research tool. With the recent appearance of commercial airborne hyperspectral imaging systems, and the impending launch of satellite-based sensors, imaging spectrometry is poised to enter the mainstream of remote sensing. As hyperspectral images become commonly available, both applications and users of the imagery will beco...

Journal: :CoRR 2016
Siwei Feng Yuki Itoh Mario Parente Marco F. Duarte

Hyperspectral signature classification is a quantitative analysis approach for hyperspectral imagery which performs detection and classification of the constituent materials at the pixel level in the scene. The classification procedure can be operated directly on hyperspectral data or performed by using some features extracted from the corresponding hyperspectral signatures containing informati...

Journal: :PloS one 2015
Gina Polo Marcelo Bahia Labruna Fernando Ferreira

This study proposed the use of satellite hyperspectral imagery to support tick-borne infectious diseases surveillance based on monitoring the variation in amplifier hosts food sources. To verify this strategy, we used the data of the human rickettsiosis occurrences in southeastern Brazil, region in which the emergence of this disease is associated with the rising capybara population. Spatio-tem...

2018
Fernando Vanegas Dmitry Bratanov Kevin Powell John Weiss Felipe Gonzalez

Recent advances in remote sensed imagery and geospatial image processing using unmanned aerial vehicles (UAVs) have enabled the rapid and ongoing development of monitoring tools for crop management and the detection/surveillance of insect pests. This paper describes a (UAV) remote sensing-based methodology to increase the efficiency of existing surveillance practices (human inspectors and insec...

2010
Chenghai Yang James H. Everitt Qian Du

This study examined linear spectral unmixing techniques for mapping the variation in crop yield for precision agriculture. Both unconstrained and constrained linear spectral unmixing models were applied to airborne hyperspectral imagery collected from a grain sorghum field and a cotton field. A pair of crop plant and soil spectra derived from each image was used as endmember spectra to generate...

2015
Jie Shen Chao Wang Ruili Wang Fengchen Huang Chao Fan Lizhong Xu

With the development of spectral imaging technology, it makes hyperspectral imagery widely used. According to the features of multiple bands and the strong mutual correlation among these bands, this paper presents a band selection method for hyperspectral imagery classification based on improved PSO (Particle Swarm Optimization). First of all, we use information divergence to describe the corre...

Journal: :Remote Sensing 2016
Manuel López-López Rocío Calderón Victoria González-Dugo Pablo J. Zarco-Tejada Elías Fereres

Red leaf blotch is one of the major fungal foliar diseases affecting almond orchards. High-resolution thermal and hyperspectral airborne imagery was acquired from two flights and compared with concurrent field visual evaluations for disease incidence and severity. Canopy temperature and vegetation indices were calculated from thermal and hyperspectral imagery and analyzed for their ability to d...

2012
M. I. Elbakary M. S. Alam

In this paper, we present a new algorithm for target detection using hyperspectral imagery. The proposed algorithm is inspired by the outstanding performance of nonlinear Kernel method and the robustness of the stochastic expectation maximization (SEM) algorithm. The traditional technique of using SEM algorithm for target detection in hyperspectral imagery is associated with dimensionality redu...

2016
A. Roncat C. Briese N. Pfeifer

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. While this calibration, aiming at the derivation of physically meaningful surface attributes such as a reflectance value, is quite cumbersome for passively sensed data and relies on a ...

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