Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 371403
Title Performance of Landsat TM in ship detection in turbid waters
Author(s) Wu, G.; Leeuw, J. de; Skidmore, A.K.; Liu, Y.; Prins, H.H.T.
Source International Journal of applied Earth Observation and Geoinformation 11 (2009)1. - ISSN 0303-2434 - p. 54 - 61.
DOI https://doi.org/10.1016/j.jag.2008.07.001
Department(s) Resource Ecology
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2009
Keyword(s) quality - imagery
Abstract The visible and near infrared bands of Landsat have limitations for detecting ships in turbid water. The potential of TM middle infrared bands for ship detection has so far not been investigated. This study analyzed the performance of the six Landsat TM visible and infrared bands for detecting dredging ships in the turbid waters of the Poyang Lake, China. A colour composite of principal components analysis (PCA) components 3, 2 and 1 of a TM image was used to randomly select 81 dredging ships. The reflectance contrast between ships and adjacent water was calculated for each ship. A z-score and related p-value were used to assess the ship detection performance of the six Landsat TM bands. The reflectance contrast was related to water turbidity to analyze how water turbidity affected the capability of ship identification. The results revealed that the TM middle infrared bands 5 and 7 better discriminated vessels from surrounding waters than the visible and near infrared bands 1-4. A significant relation between reflectance contrast and water turbidity in bands 1-4 could explain the limitations of bands 1¿4; while water turbidity has no a significant relation to the reflectance contrast of bands 5 and 7. This explains why bands 5 and 7 detect ships better than bands 1-4
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