From 0ddbcb2010131973c377e47a60cb3d3ccea5c3f3 Mon Sep 17 00:00:00 2001
From: Balthasar <balthasar@roboflow.com>
Date: Thu, 17 Jul 2025 09:49:21 +0200
Subject: [PATCH] fix: start id with 1 because 0 means no match

---
 supervision/metrics/mean_average_precision.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/supervision/metrics/mean_average_precision.py b/supervision/metrics/mean_average_precision.py
index 5100f39a..e22eb322 100644
--- a/supervision/metrics/mean_average_precision.py
+++ b/supervision/metrics/mean_average_precision.py
@@ -1237,7 +1237,7 @@ class MeanAveragePrecision(Metric):
                     "image_id": image_id,
                     "bbox": xywh,
                     "category_id": category_id,
-                    "id": len(annotations),  # incrementally increase the id
+                    "id": len(annotations) + 1,  # incrementally increase the id
                 }
                 annotations.append(dict_annotation)
         # Category list