Update testdata.py

testdata.py

@@ -104,12 +104,11 @@ class TestData(datasets.GeneratorBasedBuilder):
         
         idx = 0
         for i_file in glob(os.path.join(image_dir, "*.png")):
-        
-            d = { image_dir: annotation_dir, "png": "txt"}
-            gt_path = i_file
-            for i, j in d.items():
-                gt_path = gt_path.replace(i, j)
-                
+            img_relative_file = os.path.relpath(i_file, image_dir)
+            gt_relative_path = img_relative_file.replace(".png", ".txt")
+            
+            gt_path = os.path.join(annotation_dir, gt_relative_path)
+            
             yield idx, {"image": i_file, "path": i_file, "gt_path": gt_path}
             
             idx += 1