640 Hits in 6.3 sec

A New Pseudo-color Technique Based on Intensity Information Protection for Passive Sensor Imagery [article]

Mohammad Reza Khosravi, Habib Rostami, Gholam Reza Ahmadi, Suleiman Mansouri, Ahmad Keshavarz
2017 arXiv   pre-print
This approach helps us to have a better analysis on a sample single-band image which has been taken by Landsat-8 (OLI) sensor (as a multi-band sensor with natural color bands, its images' natural color  ...  The method that we are going to introduce in this paper is to use virtual colors to colorize the gray-scale images of satellite sensors.  ...  Otsu method [20] that is a simple technique for pseudo-color processing based on segmentation and intensity quantization, was implemented by MATLAB R2010a (image processing toolbox).  ... 
arXiv:1704.02455v1 fatcat:hjxvi4kw7bcf3ntipdvyghle7u

Airborne Hyperspectral Imaging for Submerged Archaeological Mapping in Shallow Water Environments

Alexandre Guyot, Marc Lennon, Nicolas Thomas, Simon Gueguen, Tristan Petit, Thierry Lorho, Serge Cassen, Laurence Hubert-Moy
2019 Remote Sensing  
More recently, airborne hyperspectral passive sensors have shown potential for accessing water-bottom information in shallow water environments.  ...  While hyperspectral imagery has been assessed in terrestrial continental archaeological contexts, this study brings new perspectives for documenting submerged archaeological structures using airborne hyperspectral  ...  Acknowledgments: The authors would like to thank Yves Menez for sharing his views on the current challenges in cultural heritage management that led to this research.  ... 
doi:10.3390/rs11192237 fatcat:llwml3m2dneezke7kexxvxrk5a

Coastal Zone Classification Based on Multisource Remote Sensing Imagery Fusion

Jiahui Li, Youxin Zhao, Jiguang Dai, Hong Zhu
2018 Journal of Sensors  
A new fusion method based on the wavelet transform (WT) was also proposed and used for imagery fusion.  ...  The results showed that based on the comparison of C- and L-band SAR for coastal coverage, it is verified that C band is superior to L band and parameter subsets of σvv0, σvh0, and Dcross can be effectively  ...  As a compromise between spectral and polarimetric information, we proposed a new fusion method based on WT. The result of our proposed fusion method is shown (Figure 6(c) ).  ... 
doi:10.1155/2018/5902318 fatcat:6fk4bfoblzaijd6zvsafdc3tgy

Remote Sensing of Harmful Algal Blooms [chapter]

Richard P. Stumpf, Michelle C. Tomlinson
2007 Remote Sensing of Coastal Aquatic Environments  
As a result, they produce intensely bright surface features, which can be seen in single band or color imagery.  ...  information on certain blooms.  ... 
doi:10.1007/978-1-4020-3100-7_12 fatcat:6pwmdi3xfvex5brzhhhyw7k7ye

XXXIV Symposium on Hydroacoustics Jastarnia, Poland, May 23 – 26, 2017

2017 Archives of Acoustics  
This paper presents a new approach to sonar pulse detection. The method uses chirp rate estimators and algorithms for adaptive threshold, commonly used in radiolocation.  ...  Such an analysis is possible thanks to a new kind of imaging, which presents signal energy in function of chirp rate.  ...  Using in-situ measurements by the IGLOO -sensor nodes it can show that this approach allows a clustering of the colors for a quick look classification.  ... 
doi:10.1515/aoa-2017-0058 fatcat:erjvspfxg5fkpmnu7y6skvzgf4

Remote Sensing in Agriculture—Accomplishments, Limitations, and Opportunities

Sami Khanal, Kushal KC, John P. Fulton, Scott Shearer, Erdal Ozkan
2020 Remote Sensing  
to harvesting, with the objective of contributing to the scientific understanding on the potential for RS technologies to support decision-making within different production stages.  ...  Remote sensing (RS) technologies provide a diagnostic tool that can serve as an early warning system, allowing the agricultural community to intervene early on to counter potential problems before they  ...  Currently, several satellites exist with active and passive microwave sensors for soil moisture monitoring, such as the soil moisture active passive (SMAP) and Sentinel-1 [56, 59] .  ... 
doi:10.3390/rs12223783 fatcat:2pexmjjynvcvjp6o3iofpwxgj4

Application of the Reed-Solomon Algorithm as a Remote Sensing Data Fusion Tool for Land Use Studies

Piotr A. Werner
2020 Algorithms  
The rationale behind its application for data fusion is to include all possible information from all acquired spectral bands, assuming that complete composite information in the form of one compound image  ...  A short review of the attempts to use different data fusion approaches in geospatial technologies explains the possible usage of the algorithm.  ...  different color (pseudo-color technique).  ... 
doi:10.3390/a13080188 fatcat:bygkmacwonahldbzahq3f63mqq

Landslide inventory maps: New tools for an old problem

Fausto Guzzetti, Alessandro Cesare Mondini, Mauro Cardinali, Federica Fiorucci, Michele Santangelo, Kang-Tsung Chang
2012 Earth-Science Reviews  
New and emerging techniques based on satellite, airborne, and terrestrial remote sensing technologies, promise to facilitate the production of landslide maps, reducing the time and resources required for  ...  These methods are time consuming and resource intensive.  ...  The challenge is to devise new, innovative "pixel-based", statistical, and "object oriented" techniques capable of exploiting the 3D information inherent in stereoscopic imagery for the semi-automatic  ... 
doi:10.1016/j.earscirev.2012.02.001 fatcat:6sg2izvefzgwbeoprv67avxnpe

Optical Remote Sensing Potentials for Looting Detection

Athos Agapiou, Vasiliki Lysandrou, Diofantos Hadjimitsis
2017 Geosciences  
The image analysis, including vegetation indices, fusion, automatic extraction after object-oriented classification, etc., was based on high-resolution WorldView-2 multispectral satellite imagery and RGB  ...  In recent years, the employment of remote sensing technologies using ground-based and/or space-based sensors has assisted in dealing with this issue.  ...  ): Full lambda algorithm was applied to merge small segments within larger ones based on a combination of spectral and spatial information, while the scale level is based on the normalized cumulative distribution  ... 
doi:10.3390/geosciences7040098 fatcat:6new2izidze3jp6pywmxo5prla

Self-Organized Evolutionary Process in Sets of Interdependent Variables near the Midpoint of Phase Transition in K-Satisfiability [chapter]

Michael Korkin
2001 Lecture Notes in Computer Science  
Ackerman, John T Strategic Studies Quarterly: An Air Force-Sponsored Strategic Forum for Military, Government, and Academic Professionals. Volume 2, Number 1 -7 Acuff, Hugh F  ...  Sensor attachment techniques were also developed to improve methods of handling and protecting the fragile sensors during the harsh installation process.  ...  The result is based on Aleksandrov-Clark measures techniques.  ... 
doi:10.1007/3-540-45443-8_20 fatcat:ght26tu6avh57kkp54kifofaee

Emerging versatility of a scannerless range imager

John T. Sackos, Bart D. Bradley, Robert O. Nellums, Carl F. Diegert, Gary W. Kamerman
1996 Laser Radar Technology and Applications  
The sensor is based on low cost, commercially available hardware, and is very well suited for affordable application to a wide variety of military and commercial uses, including: munition guidance, target  ...  This paper reviews the sensor technology and its development for the advanced conventional munition guidance application, and discusses a few of the many other emerging applications for this new innovative  ...  this new sensor technology.  ... 
doi:10.1117/12.243570 fatcat:aot4j6bznncw3iksfbthznefym

Next-Generation Optical Sensing Technologies for Exploring Ocean Worlds—NASA FluidCam, MiDAR, and NeMO-Net

Ved Chirayath, Alan Li
2019 Frontiers in Marine Science  
Chirayath and Li NASA FluidCam, MiDAR, and NeMO-Net using active learning for citizen-science based training. Preliminary results from four-class coral classification have an accuracy of 94.4%.  ...  VC and AL performed analysis for MiDAR and NeMO-Net results.  ...  MiDAR-The Multispectral Imaging, Detection, and Active Reflectance Instrument While FluidCam and fluid lensing offer a new technique for improved passive remote sensing of aquatic systems, they are passive  ... 
doi:10.3389/fmars.2019.00521 fatcat:i2tlnhpimnbotkmwqnfa7kvidu

A Review of Optical NDT Technologies

Yong-Kai Zhu, Gui-Yun Tian, Rong-Sheng Lu, Hong Zhang
2011 Sensors  
Among them, fibre optics features easy integration and embedding, electronic speckle focuses on whole-field high precision detection, infrared thermography has unique advantages for tests of combined materials  ...  , endoscopic technology provides images of the internal surface of the object directly, and terahertz technology opens a new direction of internal NDT because of its excellent penetration capability to  ...  Acknowledgements This work is partially supported by the Program for Changjiang Scholars, China.  ... 
doi:10.3390/s110807773 pmid:22164045 pmcid:PMC3231750 fatcat:tsiu5ml25beqzf7ahhrrdwvkiq

Applications of Unmanned Aerial Systems (UASs) in Hydrology: A Review

Mercedes Vélez-Nicolás, Santiago García-López, Luis Barbero, Verónica Ruiz-Ortiz, Ángel Sánchez-Bellón
2021 Remote Sensing  
This paper provides a comprehensive review of 122 works on the applications of UASs in surface water and groundwater research with a purpose-oriented approach.  ...  The first aim of this review is to serve as a reference or introductory document for all researchers and water managers who are interested in embracing this novel technology.  ...  areas based on texture and color analysis in a deep neural network.  ... 
doi:10.3390/rs13071359 fatcat:en3b3kcksbg7xjoksug2eqqylu

Unmanned Aerial Systems (UAS)-Based Methods for Solar Induced Chlorophyll Fluorescence (SIF) Retrieval with Non-Imaging Spectrometers: State of the Art

Juan Quirós Vargas, Juliane Bendig, Alasdair Mac Arthur, Andreas Burkart, Tommaso Julitta, Kadmiel Maseyk, Rick Thomas, Bastian Siegmann, Micol Rossini, Marco Celesti, Dirk Schüttemeyer, Thorsten Kraska (+2 others)
2020 Remote Sensing  
However, the UAS-based methods for SIF retrieval still present uncertainties associated with the current sensor characteristics and the spatio-temporal mismatching between aerial and ground measurements  ...  The latest approach focuses on the observation of one single ground point across a multiple-kilometer atmosphere vertical column using the high altitude UAS named as AirFloX, mounted on a specifically  ...  [8] recently generated GPP maps over a forest area based on SIF retrieved from HyPlant imagery.  ... 
doi:10.3390/rs12101624 fatcat:wa3lqlbwcjcftgfpa5cjkxqmra
« Previous Showing results 1 — 15 out of 640 results