From 759170d3d6cae1607290b0b88efce7b1423ebeec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adri=C3=A0=20Arrufat?=
 <1671644+arrufat@users.noreply.github.com>
Date: Fri, 2 Jun 2023 10:52:11 +0900
Subject: [PATCH] Fix pixel saturation in interpolate_quadratic (#2806)

* Fix pixel saturation in interpolate_quadratic

* Use pixel_type_t alias
---
 dlib/image_transforms/interpolation.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlib/image_transforms/interpolation.h b/dlib/image_transforms/interpolation.h
index 83c9ae522..22fcea6e9 100644
--- a/dlib/image_transforms/interpolation.h
+++ b/dlib/image_transforms/interpolation.h
@@ -310,7 +310,9 @@ namespace dlib
                     pixel_to_vector<double>(img[r+1][c  ])(i),
                     pixel_to_vector<double>(img[r+1][c+1])(i));
             typename image_view_type::pixel_type temp;
-            vector_to_pixel(temp, pvout);
+            const auto min_val = pixel_traits<pixel_type_t<image_view_type>>::min();
+            const auto max_val = pixel_traits<pixel_type_t<image_view_type>>::max();
+            vector_to_pixel(temp, clamp(pvout, min_val, max_val));
             assign_pixel(result, temp);
             return true;
         }