Results 11 to 20 of about 2,917,023 (283)

Assessment of the thematic reliability of maps and classified images: a review

Investigaciones Geográficas, 2012
Before their use as a decision-making tool, thematic maps, geographical databases and classified images should be assessed for accuracy. This paper presents a review of the specialized literature on thematic accuracy assessment, which can be used as a ...
Jean Françis Mas, José Reyes Díaz Gallegos, Azucena Pérez Vega   +2 more
doaj   +2 more sources

Statistical Methods for Thematic-Accuracy Quality Control Based on an Accurate Reference Sample [PDF]

Remote Sensing, 2020
The goal of this work is to present a set of statistical tests that offer a formal procedure to make a decision as to whether a set of thematic quality specifications of a product is fulfilled within the philosophy of a quality control process. The tests
María V. Alba-Fernández, Francisco J. Ariza-López, José Rodríguez-Avi, José L. García-Balboa   +3 more
doaj   +3 more sources

Accuracy of artificial intelligence applications in periodontics: a thematic narrative review

Frontiers in Dental Medicine
BackgroundArtificial intelligence (AI) has been increasingly applied to periodontal diagnostics across periapical, bitewing, panoramic radiographs, cone-beam computed tomography (CBCT), and intraoral photographs.
Ady Azhari
doaj   +3 more sources

Thematic accuracy assessment of geographic object-based image classification

International Journal of Geographical Information Science, 2011
Geographic object-based image analysis is an image-processing method where groups of spatially adjacent pixels are classified as if they were behaving as a whole unit. This approach raises concerns about the way subsequent validation studies must be conducted. Indeed, classical point-based sampling strategies based on the spatial distribution of sample
Julien Radoux, Patrick Bogaert, Dominique Fasbender, Pierre Defourny   +3 more
openaire   +2 more sources

Thematic Accuracy Assessment of the NLCD 2016 land cover for the conterminous United States. [PDF]

Remote Sens Environ, 2021
The National Land Cover Database (NLCD) is an operational land cover monitoring program providing updated land cover and related information for the United States at five-year intervals. NLCD2016 extends temporal coverage to 15 years (2001 - 2016). We collected land cover reference data for the 2011 and 2016 nominal dates to report land cover accuracy ...
Wickham J, Stehman SV, Sorenson DG, Gass L, Dewitz JA.   +4 more
europepmc   +3 more sources

The Implications of Field Worker Characteristics and Landscape Heterogeneity for Classification Correctness and the Completeness of Topographical Mapping

ISPRS International Journal of Geo-Information, 2018
The quality of spatial data may vary spatially. If mapping (interpretation of orthophotos) is done during fieldwork, this variation in quality may occur as a result of differences in the complexity of the landscape, differences in the characteristics of ...
Kiira Mõisja, Evelyn Uuemaa, Tõnu Oja
doaj   +1 more source

Thematic relations affect similarity via commonalities [PDF]

, 2009
Thematic relations are an important source of perceived similarity. For instance, the rowing theme of boats and oars increases their perceived similarity. The mechanism of this effect, however, has not been specified previously.
Golonka, Sabrina, Estes, Zachary, S. Golonka   +2 more
core   +1 more source

Mapping Spatial Patterns of Posidonia oceanica Meadows by Means of Daedalus ATM Airborne Sensor in the Coastal Area of Civitavecchia (Central Tyrrhenian Sea, Italy)

Remote Sensing, 2013
The spatial distribution of sea bed covers and seagrass in coastal waters is of key importance in monitoring and managing Mediterranean shallow water environments often subject to both increasing anthropogenic impacts and climate change effects.
Marco Marcelli, Sandro Martini, Alessandro Belmonte, Luigi De Cecco, Selvaggia Cognetti De Martis, Valentina Gnisci, Viviana Piermattei, Filippo Carli, Flavio Borfecchia, Carla Micheli   +9 more
doaj   +1 more source

Banco de dados geoespaciais: padronização e avaliação como suporte à Inteligência Territorial

Confins, 2023
The approach to different thematic areas in the context of territorial planning and management requires not only the synergy of actions but also the availability of access to organized and standardized data through databases, thus constituting an ...
Silvio Braz de Sousa, Daniel Carlos Alves Santos   +1 more
doaj   +1 more source

EVALUATION OF EFFECTIVENESS OF PATCH BASED IMAGE CLASSIFICATION TECHNIQUE USING HIGH RESOLUTION WORLDVIEW-2 IMAGE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The aim of the current study was to evaluate the performance of patch-based classification technique in land use/land cover classification and to investigate the effect of patch size in thematic map accuracy.
M. Y. Ozturk, I. Colkesen
doaj   +1 more source