diff --git a/ar_tag_pose/detector_board_main.py b/ar_tag_pose/detector_board_main.py
index 62fc558..1085488 100644
--- a/ar_tag_pose/detector_board_main.py
+++ b/ar_tag_pose/detector_board_main.py
@@ -38,7 +38,7 @@ class Detector(abc.ABC):
 			if "image" in mime_type:
 				self.src_images = source
 				basename = os.path.basename(source)
-				name = basename.split('_')[0]
+				name = basename.rsplit('_', 1)[0]
 				numeric_part = basename.split('_')[-1].split('.')[0]
 				suffix = basename.split('_')[-1].split('.')[1]
 				self.src_images = f"{os.path.dirname(source)}/{name}_%0{len(numeric_part)}d.{suffix}"