Update README.md

README.md

@@ -48,6 +48,11 @@ This repository contains the LISAT GRES dataset, which includes image files and
 
 This GRES dataset includes image files and corresponding annotation files in JSON format. The dataset is organized into three main splits: **train**, **val**, and **test**.
 
+# Dataset Structure
+
+The dataset is organized as follows:
+
+```plaintext
 gres-images/
 ├── train
 │   ├── lisat_gres_000000016192.jpg
@@ -86,7 +91,6 @@ gres-images/
 │   │   └── small.txt
 
 
-
 ## Citation
 
 If you use LISAt in your research or applications, please cite our paper: