On the reconstruction of lost data in images of more than one band

Starting from the necessity of replacing data of some failed sensors of the LANDSAT-4 Thematic Mapper a methodology for a statistical and objective comparison of various reconstruction techniques for the missing data has been denned. It has been shown that the use of the information contained in a second band gives good results, even in cases where they are not strongly correlated, provided that a proper choice of parameters is made. A method, based on the local relationship between the radiance of the two bands, is suggested which improves on the results obtained by other authors.