fixed pycolmap reconstruction with pycolmap=3.13 (database opening failed)

Author: Francesco Ioli

demo.py

@@ -133,7 +133,7 @@ def run_matching(args):
             "force": True,
             "skip_reconstruction": False,
             "graph": True,
-            "verbose": False,
+            "verbose": True,
         }
 
     run_matching(args)

src/deep_image_matching/reconstruction.py

@@ -10,7 +10,9 @@
 
 
 def incremental_mapping_with_pbar(database_path, image_path, sfm_path):
-    num_images = pycolmap.Database(database_path).num_images
+    database = pycolmap.Database()
+    database.open(database_path)
+    num_images = database.num_images
     with enlighten.Manager() as manager:
         with manager.counter(total=num_images, desc="Images registered:") as pbar:
             pbar.update(0, force=True)