From 579dfb6e025c62acb16b7b3e1fe953030df68d40 Mon Sep 17 00:00:00 2001
From: Alexander Smorkalov <2536374+asmorkalov@users.noreply.github.com>
Date: Thu, 11 Dec 2025 18:06:39 +0300
Subject: [PATCH] Merge pull request #27640 from asmorkalov:as/kleidicv_mac

Enable KleidiCV on Linux and Mac Mx by default #27640

OpenCV Extra: https://github.com/opencv/opencv_extra/pull/1296

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
---
 CMakeLists.txt                           |  2 +-
 modules/dnn/test/test_torch_importer.cpp |  2 +-
 modules/video/perf/perf_ecc.cpp          | 11 ++++++++++-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 167ce19578..caf42ebc0e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -227,7 +227,7 @@ OCV_OPTION(WITH_CAP_IOS "Enable iOS video capture" ON
   VERIFY HAVE_CAP_IOS)
 OCV_OPTION(WITH_CAROTENE "Use NVidia carotene acceleration library for ARM platform" (NOT CV_DISABLE_OPTIMIZATION)
   VISIBLE_IF (ARM OR AARCH64) AND NOT IOS AND NOT XROS)
-OCV_OPTION(WITH_KLEIDICV "Use KleidiCV library for ARM platforms" (ANDROID AND AARCH64 AND NOT CV_DISABLE_OPTIMIZATION)
+OCV_OPTION(WITH_KLEIDICV "Use KleidiCV library for ARM platforms" (NOT CV_DISABLE_OPTIMIZATION)
   VISIBLE_IF (AARCH64 AND (ANDROID OR UNIX)))
 OCV_OPTION(WITH_NDSRVP "Use Andes RVP extension" (NOT CV_DISABLE_OPTIMIZATION)
   VISIBLE_IF RISCV)
diff --git a/modules/dnn/test/test_torch_importer.cpp b/modules/dnn/test/test_torch_importer.cpp
index f1d7521e7b..d27cda17b8 100644
--- a/modules/dnn/test/test_torch_importer.cpp
+++ b/modules/dnn/test/test_torch_importer.cpp
@@ -426,7 +426,7 @@ static void normAssertSegmentation(const Mat& ref, const Mat& test)
 
     Mat refMask = getSegmMask(ref);
     Mat testMask = getSegmMask(test);
-    EXPECT_EQ(countNonZero(refMask != testMask), 0);
+    EXPECT_LE(countNonZero(refMask != testMask), 2);
 }
 
 TEST_P(Test_Torch_nets, ENet_accuracy)
diff --git a/modules/video/perf/perf_ecc.cpp b/modules/video/perf/perf_ecc.cpp
index 217b98fa0e..f81f64d8a6 100644
--- a/modules/video/perf/perf_ecc.cpp
+++ b/modules/video/perf/perf_ecc.cpp
@@ -55,7 +55,16 @@ PERF_TEST_P(ECCPerfTest, findTransformECC,
                          TermCriteria(TermCriteria::COUNT + TermCriteria::EPS, 5, -1));
     }
 
-    SANITY_CHECK(warpMat, 3e-3);
+    if (transform_type == MOTION_HOMOGRAPHY)
+    {
+        // NOTE: for Mac M1 + KleidiCV
+        // ECCPerfTest_findTransformECC.findTransformECC/6, where GetParam() = (MOTION_HOMOGRAPHY, IMREAD_GRAYSCALE)
+        SANITY_CHECK(warpMat, 8.3e-3);
+    }
+    else
+    {
+        SANITY_CHECK(warpMat, 3e-3);
+    }
 }
 
 }  // namespace opencv_test