added support for full inversion

specific/configuration/flexible_acquisition.cpp

@@ -112,6 +112,11 @@ namespace flexible_acquisition
           _model_known[Support::BLK] = _supersurface[Support::BLK] | _subsurface[Support::BLK];
           _model_known[Support::BND] = _supersurface[Support::BND] | _subsurface[Support::BND];
         }
+        else if (unknownRegion == "all")
+        {
+          _model_unknown[Support::BLK] = _supersurface[Support::BLK] | _subsurface[Support::BLK];
+          _model_unknown[Support::BND] = _supersurface[Support::BND] | _subsurface[Support::BND];
+        }
         else {
             throw Exception("Invalid unknown region type: " + unknownRegion);
         }