New method for assessment of geometry correction of remote sensing imagery - art. no. 67900K

In this paper, a new method is presented for assessing the precision based on the analysis of the distribution of the ground control and check points. First, a question is presented by analyzing the precision of the geometry correction of remote sensing. Especially, in the coastal area, the ground control and check points are infrequent and non-homogeneous. Maybe, only small part of the remote sensing image (e.g. one island) is needed for application. But, if is the precision of the part fit the requirement? Then, a model is developed for describe the spatial distribution of the finite points. Through analyzing the finite points on the remote sensing image, each point has its effect range. In the study, the effect range is defined as the monopolized-range. The ratio of the monopolized-range to whole image is a valid index for the points' distribution. Finally, the model is used in a coastal remote sensing application. The result shows that the precision of geometry correction can be showed quantitatively on the image, which is very useful for assessment of remote sensing information.