Enable absorption correction

reco.c

@@ -135,6 +135,7 @@ reco_graph_new (Params *params)
           params->v_origin[0], params->v_origin[1], params->v_origin[2],
           params->v_size[0], params->v_size[1], params->v_size[2]);
 
+
     g_object_set (data->fft1, "dimensions", 2, NULL);
     g_object_set (data->fft2, "dimensions", 2, NULL);
     g_object_set (data->ifft, "dimensions", 2, NULL);
@@ -245,7 +246,11 @@ run_simple_reconstruction (Params *params, gchar **argv)
         dark_reader = make_task (data->pm, "reader");
         ffc = make_task (data->pm, "flat-field-correction");
 
-        g_object_set (ffc, "dark-scale", params->dark_scale, NULL);
+        g_object_set (ffc,
+                      "dark-scale", params->dark_scale,
+                      "absorption-correction", TRUE,
+                      NULL);
+
         g_object_set (flat_reader, "path", params->flats, NULL);
         g_object_set (dark_reader, "path", params->darks, NULL);