Probability theory and statistics, correlation, (often measured as a correlation coefficient), indicates the strength and direction of a linear relationship between random variables. In general statistical usage, correlation refers to the departure of two variables from independence. In this broad sense there are several coefficients, measuring the degree of correlation, adapted to the nature of data
Published in Chapter:
Geometric Quality in Geographic Information IFSAR DEM Control
José Francisco Zelasco (Universidad de Buenos Aires, Argentina), Judith Donayo (Universidad de Buenos Aires, Argentina), Kevin Ennis (Universidad de Buenos Aires, Argentina), and José Luís Fernandez Ausinaga (Universidad de Buenos Aires, Argentina)
Copyright: © 2009
|Pages: 7
DOI: 10.4018/978-1-60566-242-8.ch044
Abstract
Both this, article II and another one, article I, titled “Geometric Quality In Geographic Information” published in this encyclopedia propose the theoretical aspects of the method to evaluate the geometric integrity of Digital Elevation Models obtained by different techniques and therefore, different stochastic hypotheses are considered. In the article I we considerer the classical topographic or aerial photogrammetry stereo images method (included ASTER or SPOT images) and we assume consistent stochastic hypotheses. In this Article II we consider IFSAR techniques and the stochastic hypotheses are specific according to the particular geometry involved in this technique.