DIGITAL IMAGE PROCESSING IN THE COMPILATION OF LUNAR PHOTOMAPS

A method of compiling lunar thematic photomaps is described, in which telescopically derived photometric data, representing the map theme of albedo variation, is portrayed on a topographic base map prepared from scanner data obtained from a space probe. Digital image processing is employed in a wide range of tasks including data averaging and filtration, and grid and scale transformation. Two maps, representing different versions of final output, are provided: a map with albedo variation displayed according to the shaded-isoline technique, and one in which numerical values are printed over a grid of control points. Translated from: Geodeziya i kartografiya, 1985, No. 1, pp. 38-44.