The effect of using spectral transform images as input data on segmentation quality and its potential effect on products generated by object-based image analysis are explored in the context of land cover classification in Accra, Ghana. Five image data transformations are compared to untransformed spectral bands in terms of their effect on segmentation quality and final product accuracy. The relationship between segmentation quality and product accuracy is also briefly explored.
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Library ResourceArtículos de revistas y librosDiciembre, 2012Ghana
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Library ResourceArtículos de revistas y librosDiciembre, 2014Ghana
Dense multi-temporal stacks of Landsat imagery have most commonly been exploited to identify land cover and land use changes (LCLUC) based on detection of abrupt changes in continuous value spectral indices. In this study, a discrete classification approach to LCLUC identification based on stable training sites is tested on a nine-date, 4-year Landsat-7 ETM + time sequence for a study area in Ghana that is prone to cloud cover.
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Library ResourceArtículos de revistas y librosDiciembre, 2012Ghana
Little research has been conducted on how differing spatial resolutions or classification techniques affect image-driven identification and categorization of slum neighborhoods in developing nations. This study assesses the correlation between satellite-derived land cover and census-derived socioeconomic variables in Accra, Ghana to determine whether the relationship between these variables is altered with a change in spatial resolution or scale.
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Library ResourceArtículos de revistas y librosDiciembre, 2015Ghana
Policy-makers consider participatory reforestation and forest resource management to be the key to reducing the problems of deforestation and forest degradation. In this regard, the government of Ghana introduced a modified taungya system as a mechanism to restore degraded forest reserves under the National Forest Plantation Development Programme to allow landless farmers access to land for temporary crop production and secured tree tenure rights.
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