From ffbc2af731a1c424cc8dff9e51d3774f77b01ee0 Mon Sep 17 00:00:00 2001
From: Troels Ynddal <troels@ynddal.dk>
Date: Mon, 5 Feb 2024 09:27:14 +0100
Subject: [PATCH 1/2] Increment pointers in `brute_force_matcher` when no match
 is found

---
 modules/cudafeatures2d/src/brute_force_matcher.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/modules/cudafeatures2d/src/brute_force_matcher.cpp b/modules/cudafeatures2d/src/brute_force_matcher.cpp
index 87316846d55..de2e29ff63f 100644
--- a/modules/cudafeatures2d/src/brute_force_matcher.cpp
+++ b/modules/cudafeatures2d/src/brute_force_matcher.cpp
@@ -791,8 +791,13 @@ namespace
             for (int i = 0; i < k; ++i)
             {
                 const int trainIdx = *trainIdxPtr;
-                if (trainIdx == -1)
+                if (trainIdx == -1){
+                    ++trainIdxPtr;
+                    ++distancePtr;
+                    if (imgIdxPtr)
+                        ++imgIdxPtr;
                     continue;
+                }
 
                 const int imgIdx = imgIdxPtr ? *imgIdxPtr : 0;
                 const float distance = *distancePtr;

From 5f50789c62b7e42099edc655002f496e4a66e8fb Mon Sep 17 00:00:00 2001
From: Troels Ynddal <troels@ynddal.dk>
Date: Mon, 5 Feb 2024 13:45:15 +0100
Subject: [PATCH 2/2] Moved pointer increment for readability

---
 .../src/brute_force_matcher.cpp               | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/modules/cudafeatures2d/src/brute_force_matcher.cpp b/modules/cudafeatures2d/src/brute_force_matcher.cpp
index de2e29ff63f..d6e4618d6fb 100644
--- a/modules/cudafeatures2d/src/brute_force_matcher.cpp
+++ b/modules/cudafeatures2d/src/brute_force_matcher.cpp
@@ -791,21 +791,14 @@ namespace
             for (int i = 0; i < k; ++i)
             {
                 const int trainIdx = *trainIdxPtr;
-                if (trainIdx == -1){
-                    ++trainIdxPtr;
-                    ++distancePtr;
-                    if (imgIdxPtr)
-                        ++imgIdxPtr;
-                    continue;
+                if (trainIdx != -1)
+                {
+                    const int imgIdx = imgIdxPtr ? *imgIdxPtr : 0;
+                    const float distance = *distancePtr;
+                    DMatch m(queryIdx, trainIdx, imgIdx, distance);
+                    curMatches.push_back(m);
                 }
 
-                const int imgIdx = imgIdxPtr ? *imgIdxPtr : 0;
-                const float distance = *distancePtr;
-
-                DMatch m(queryIdx, trainIdx, imgIdx, distance);
-
-                curMatches.push_back(m);
-
                 ++trainIdxPtr;
                 ++distancePtr;
                 if (imgIdxPtr)