Results 1 to 10 of about 7,930 (201)

Optimization of UWB indoor positioning based on hardware accelerated Fuzzy ISODATA [PDF]

open access: yesScientific Reports
With the development of wireless communication technology, Ultra-Wideband (UWB) has become an important solution for indoor positioning. In complex indoor environments, the influence of non-line-of-sight (NLOS) factors leads to increased positioning ...
Hua Guo   +4 more
doaj   +4 more sources

Micro-computed tomography of sandstone rocks: Raw, filtered and segmented datasets [PDF]

open access: yesData in Brief, 2022
High-resolution computed micro-tomography is an important area of science, which correlates well with several experimental methodologies and serves as a basis for advanced computational physics studies, in which high-resolution images are used as input ...
Everton Lucas-Oliveira   +5 more
doaj   +2 more sources

Unsupervised Classifier for Dynamic Systems Based on ISODATA

open access: yesRevista Politécnica, 2014
This paper describes a method for designing an algorithm to classifier a dynamic set. Nowadays, the classifiers are well known, this work shows a combination of different techniques in order to get a better classifier.
Andrés F. Cela   +1 more
doaj   +1 more source

Evaluating land cover types from Landsat TM using SAGA GIS for vegetation mapping based on ISODATA and K-means clustering [PDF]

open access: yesActa Agriculturae Serbica, 2021
The paper presents the cartographic processing of the Landsat TM image by the two unsupervised classification methods of SAGA GIS: ISODATA and K-means clustering. The approaches were tested and compared for land cover type mapping.
Lemenkova Polina
doaj   +1 more source

Application of satellite imagery to update depth-area-volume relationships in reservoirs in the semiarid region of Northeast Brazil

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2021
Reservoirs are the primary source of water supply in the semiarid region of Pernambuco state, Brazil, because of the constant water scarcity affecting this region.
Marina de P. Moura   +2 more
doaj   +1 more source

Multiparametric MRI analysis for the identification of high intensity focused ultrasound-treated tumor tissue. [PDF]

open access: yesPLoS ONE, 2014
PurposeIn this study endogenous magnetic resonance imaging (MRI) biomarkers for accurate segmentation of High Intensity Focused Ultrasound (HIFU)-treated tumor tissue and residual or recurring non-treated tumor tissue were identified ...
Stefanie J C G Hectors   +3 more
doaj   +1 more source

Optimized unsupervised CORINE Land Cover mapping using linear spectral mixture analysis and object-based image analysis

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2021
In this paper, the approach Linear Spectral Mixture Analysis and Object-Based Image Analysis (LSMA + OBIA) and Iterative Self-Organizing Data Analysis Technique and Object-Based Image Analysis (ISODATA + OBIA) are evaluated, for optimizing land cover ...
Silvia Ruggeri   +3 more
doaj   +1 more source

ACCURACY OF UNSUPERVISED CLASSIFICATION TO DETERMINE CORAL HEALTH USING SPOT-6 AND SENTINEL-2A [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Characteristics of corals spectral from different species are expected to have optically different characters. The aims of this research are to compare unsupervised classification between IsoData and K-Means methods with Lyzenga application, and to ...
N. Nurdin   +7 more
doaj   +1 more source

COMPARISON OF SEVERAL REMOTE SENSING IMAGE CLASSIFICATION METHODS BASED ON ENVI [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
With the development of remote sensing technology and the increasing accuracy of remote sensing images, research on the accuracy of remote sensing classification is becoming more and more important.
X. C. Li   +6 more
doaj   +1 more source

Research on Parallel ISODATA Clustering for Remote Sensing Image Based on OpenMP [PDF]

open access: yesJisuanji gongcheng, 2016
The traditional image classification algorithm suffers from low efficiency and is unable to meet the requirement of mass and real-time processing of high resolution remote sensing data.Based on the analysis and research of the Iterative Self-organizing ...
LIU Yang,WANG Peng,YANG Rui,ZUO Xianyu,ZHANG Zhouwei,WU Xiaoyang,QU Jiantao
doaj   +1 more source

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