منابع مشابه
Comparison of Topographic Correction Methods
A comparison of topographic correction methods is conducted for Landsat-5 TM, Landsat-7 ETM+, and SPOT-5 imagery from different geographic areas and seasons. Three successful and known methods are compared: the semi-empirical C correction, the Gamma correction depending on the incidence and exitance angles, and a modified Minnaert approach. In the majority of cases the modified Minnaert approac...
متن کاملEvaluation of different topographic correction methods for Landsat imagery
The recent free availability of Landsat historical data provides new potentials for land-cover change studies. Multi-temporal studies require a previous radiometric and geometric homogenization of input images, to better identify true changes. Topographic normalization is one of the key steps to create consistent and radiometricly stable multi-temporal time series, since terrain shadows change ...
متن کاملCustomer Data Mining and Visualization by Generative Topographic Mapping Methods
Understanding various characteristics of potential customers is important in the web business with respect to economy and efficiency. When analyzing a large data set on the customers, the structure of data can be highly complicated due to the correlations and redundancy of the observed data. In that case a meaningful insight of data can be discovered by applying a latent variable model to the o...
متن کاملReview of objective topographic facial nerve evaluation methods.
OBJECTIVE This study is a critical review of the described methods for objective topographic evaluation of facial nerve function to identify areas of consensus and point to future research topics. SOURCES AND STUDY SELECTION: Original research articles on the subject were identified through the Medline database and reference cross-checking. DATA EXTRACTION AND SYNTHESIS The articles were grou...
متن کاملChange Detection Methods for the Revision of Topographic Databases
Database updating and maintenance is becoming a demanding operation in national mapping organisations. Major tasks are the change detection and extraction and its integration in the existing data sets. Change detection is performed between a number of data sets involved in topographic applications. The implementation of more automation coupled with the availability of heterogeneous data require...
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ژورنال
عنوان ژورنال: Science
سال: 1895
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.2.27.15-a