From 93aca8297b294a04e49700badc2b1e85ecca7418 Mon Sep 17 00:00:00 2001
From: jmackay2 <1.732mackay@gmail.com>
Date: Mon, 17 Nov 2025 22:15:18 -0500
Subject: [PATCH 1/3] Fix clahe build

---
 modules/cudaimgproc/src/histogram.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/cudaimgproc/src/histogram.cpp b/modules/cudaimgproc/src/histogram.cpp
index 9652bed00b..144afc2541 100644
--- a/modules/cudaimgproc/src/histogram.cpp
+++ b/modules/cudaimgproc/src/histogram.cpp
@@ -163,6 +163,9 @@ namespace
 
         void collectGarbage();
 
+	void setBitShift(int) override {};
+	int getBitShift() const override {return 0;}
+
     private:
         double clipLimit_;
         int tilesX_;

From 1cb40d391003cefc679732d5eea0b39192625d0b Mon Sep 17 00:00:00 2001
From: jmackay2 <1.732mackay@gmail.com>
Date: Mon, 17 Nov 2025 22:30:25 -0500
Subject: [PATCH 2/3] format

---
 modules/cudaimgproc/src/histogram.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/cudaimgproc/src/histogram.cpp b/modules/cudaimgproc/src/histogram.cpp
index 144afc2541..0a98ff38dd 100644
--- a/modules/cudaimgproc/src/histogram.cpp
+++ b/modules/cudaimgproc/src/histogram.cpp
@@ -163,8 +163,8 @@ namespace
 
         void collectGarbage();
 
-	void setBitShift(int) override {};
-	int getBitShift() const override {return 0;}
+        void setBitShift(int) override {};
+        int getBitShift() const override {return 0;}
 
     private:
         double clipLimit_;

From 096ffadeee6ef617364c8f5e77e430ba14310d52 Mon Sep 17 00:00:00 2001
From: Alexander Smorkalov <alexander.smorkalov@opencv.ai>
Date: Tue, 18 Nov 2025 12:20:46 +0300
Subject: [PATCH 3/3] Added warning.

---
 modules/cudaimgproc/src/histogram.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/modules/cudaimgproc/src/histogram.cpp b/modules/cudaimgproc/src/histogram.cpp
index 0a98ff38dd..87e5f556eb 100644
--- a/modules/cudaimgproc/src/histogram.cpp
+++ b/modules/cudaimgproc/src/histogram.cpp
@@ -64,6 +64,8 @@ void cv::cuda::histRange(InputArray, GpuMat*, const GpuMat*, Stream&) { throw_no
 
 #else /* !defined (HAVE_CUDA) */
 
+#include <opencv2/core/utils/logger.hpp>
+
 ////////////////////////////////////////////////////////////////////////
 // calcHist
 
@@ -163,8 +165,15 @@ namespace
 
         void collectGarbage();
 
-        void setBitShift(int) override {};
-        int getBitShift() const override {return 0;}
+        void setBitShift(int) override
+        {
+            CV_LOG_WARNING(NULL, "CUDA implementation of CLAHE algorithm does not support bit shift option");
+        };
+        int getBitShift() const override
+        {
+            CV_LOG_WARNING(NULL, "CUDA implementation of CLAHE algorithm does not support bit shift option");
+            return 0;
+        }
 
     private:
         double clipLimit_;