Update PathfinderX2.py

PathfinderX2.py

@@ -106,12 +106,20 @@ class PathfinderX2(datasets.GeneratorBasedBuilder):
     def _generate_examples(self, data, split):
         if split == "testing":
             images, annotations = data
-            for idx, (path, file) in enumerate(data):
-                if path.endswith(".png"):
+            image_id2annot = {}
+            # loads the annotations for the split into RAM (less than 100 MB) to support streaming
+            for path_annot, file_annot in annotations:
+                if split in path_annot and path_annot.endswith(".png"):
+                    image_id = os.path.basename(path_annot).split(".")[0]
+                    image_id2annot[image_id] = (path_annot, file_annot.read())
+            for idx, (path_img, file_img) in enumerate(images):
+                if split in path_img and path_img.endswith(".png"):
+                    image_id = os.path.basename(path_img).split(".")[0]
+                    path_annot, bytes_annot = image_id2annot[image_id]
                     yield idx, {
-                        "image": {"path": path, "bytes": file.read()},
+                        "image": {"path": path_img, "bytes": file_img.read()},
                         "annotation": None,
-                    }
+                    }        
         else:
             images, annotations = data
             image_id2annot = {}