Do you happen to know if there's anything similar for trying to extract similar stuff (i.e. forests-related information) from older paper-maps which have by now

Do you happen to know if there's anything similar for trying to extract similar stuff (i.e. forests-related information) from older paper-maps which have by now been digitised? For example the old (old as in from the 1950s-1960s) Soviet maps for my country (Romania) are quite accurate, you can quite clearly see the extent of forests back then, and I think it'd be helpful if one could extract that information in an "automated" way. For those curious the maps can be accessed here [1] by selecting the "Harti sovietice 50k" layer and by de-selecting the default layer, called "Planurile directoare" (there's a menu button on the top-left corner of the screen). [1] http://www.geo-spatial.org/harti/#/viewer/openlayers/10 http://www.geo-spatial.org/harti/#/viewer/openlayers/10