The use of change detection in satellite images from existing databases for minefield delineation has been investigated for two mined areas in Mozambique: Songo and Mameme. For the Songo region, different change detection maps have been derived from available (rectified) LANDSAT TM and SPOT imagery for the war period, the war-/post war period and the post war period using three types of difference operators: a modulus difference operator, an absolute difference operator and a difference operator based on histogram biasing. For the Mameme region, one modulus difference analysis has been performed with available (rectified) LANDSAT MSS imagery. It is shown that the interpretation of local changes in radiances of the available satellite data is extremely difficult, if not impossible, even in change detection maps obtained with advanced difference operators.

Runtime: 1999 - 2000