From 3ae81ee9d11c432189e109d7a1724635a2e451ca Mon Sep 17 00:00:00 2001
From: Glenn Jocher <glenn.jocher@ultralytics.com>
Date: Wed, 7 Jun 2023 08:17:39 +0200
Subject: [PATCH] Update val `max_dets=args.max_det=300` (#3051)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
---
 ultralytics/yolo/v8/detect/val.py  |  2 +-
 ultralytics/yolo/v8/pose/val.py    |  2 +-
 ultralytics/yolo/v8/segment/val.py | 15 ++++++++-------
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/ultralytics/yolo/v8/detect/val.py b/ultralytics/yolo/v8/detect/val.py
index 7759a431b9..77d346ca4b 100644
--- a/ultralytics/yolo/v8/detect/val.py
+++ b/ultralytics/yolo/v8/detect/val.py
@@ -223,7 +223,7 @@ class DetectionValidator(BaseValidator):
     def plot_predictions(self, batch, preds, ni):
         """Plots predicted bounding boxes on input images and saves the result."""
         plot_images(batch['img'],
-                    *output_to_target(preds, max_det=15),
+                    *output_to_target(preds, max_det=self.args.max_det),
                     paths=batch['im_file'],
                     fname=self.save_dir / f'val_batch{ni}_pred.jpg',
                     names=self.names,
diff --git a/ultralytics/yolo/v8/pose/val.py b/ultralytics/yolo/v8/pose/val.py
index a062727206..16afba45ed 100644
--- a/ultralytics/yolo/v8/pose/val.py
+++ b/ultralytics/yolo/v8/pose/val.py
@@ -156,7 +156,7 @@ class PoseValidator(DetectionValidator):
         """Plots predictions for YOLO model."""
         pred_kpts = torch.cat([p[:, 6:].view(-1, *self.kpt_shape)[:15] for p in preds], 0)
         plot_images(batch['img'],
-                    *output_to_target(preds, max_det=15),
+                    *output_to_target(preds, max_det=self.args.max_det),
                     kpts=pred_kpts,
                     paths=batch['im_file'],
                     fname=self.save_dir / f'val_batch{ni}_pred.jpg',
diff --git a/ultralytics/yolo/v8/segment/val.py b/ultralytics/yolo/v8/segment/val.py
index 5c13885e52..73c2fe834f 100644
--- a/ultralytics/yolo/v8/segment/val.py
+++ b/ultralytics/yolo/v8/segment/val.py
@@ -179,13 +179,14 @@ class SegmentationValidator(DetectionValidator):
 
     def plot_predictions(self, batch, preds, ni):
         """Plots batch predictions with masks and bounding boxes."""
-        plot_images(batch['img'],
-                    *output_to_target(preds[0], max_det=15),
-                    torch.cat(self.plot_masks, dim=0) if len(self.plot_masks) else self.plot_masks,
-                    paths=batch['im_file'],
-                    fname=self.save_dir / f'val_batch{ni}_pred.jpg',
-                    names=self.names,
-                    on_plot=self.on_plot)  # pred
+        plot_images(
+            batch['img'],
+            *output_to_target(preds[0], max_det=15),  # not set to self.args.max_det due to slow plotting speed
+            torch.cat(self.plot_masks, dim=0) if len(self.plot_masks) else self.plot_masks,
+            paths=batch['im_file'],
+            fname=self.save_dir / f'val_batch{ni}_pred.jpg',
+            names=self.names,
+            on_plot=self.on_plot)  # pred
         self.plot_masks.clear()
 
     def pred_to_json(self, predn, filename, pred_masks):