Publications

New commercial digital earth observing satellite systems with very high resolution (1 - 3 m pixel size) are currently developed and tested. In order to get an impression of the abilities of this new spatial resolution, images are simulated from airborne image data with a similar, but slightly higher resolution. Degradation processes consist of two steps: filtering and resampling to new pixel size. As filtering is already integrated in some resampling techniques and only small differences in the resolution shall be considered, the choice of an additional filter is problematic. Therefore, standard resampling methods produce results of different quality, which are often rather optimistic. A degradation technique for generating realistic images is presented in this paper. The method is based on the point spread functions of the given image and the simulated sensor. It is compared to standard resampling techniques on synthetic and realistic images. This clearly demonstrates the advantages of the new approach.

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Mueller, M.; Segl, K. (1999): Simulation of high resolution imagery. - In: Nieuwenhuis, G. J. A.; Vaughan, R. A.; Molenaar, M. (Eds.), Operational Remote Sensing for Sustainable Development, Balkema, 331-338.