From 66dd8712886e7e531bc02fcf8ae53427b71e4194 Mon Sep 17 00:00:00 2001
From: cpengu <guchengpeng@gmail.com>
Date: Fri, 15 Oct 2021 11:11:35 +0800
Subject: [PATCH] Update qrcode.cpp

Fixed issue #20880, QRDetect::searchHorizontalLines() boundary condition will skip the matched qrcode near the end
---
 modules/objdetect/src/qrcode.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/objdetect/src/qrcode.cpp b/modules/objdetect/src/qrcode.cpp
index 3cc130ac89..1479aabf08 100644
--- a/modules/objdetect/src/qrcode.cpp
+++ b/modules/objdetect/src/qrcode.cpp
@@ -200,7 +200,7 @@ vector<Vec3d> QRDetect::searchHorizontalLines()
             }
         }
         pixels_position.push_back(width_bin_barcode - 1);
-        for (size_t i = 2; i < pixels_position.size() - 4; i+=2)
+        for (size_t i = 2; i < pixels_position.size() - 3; i+=2)
         {
             test_lines[0] = static_cast<double>(pixels_position[i - 1] - pixels_position[i - 2]);
             test_lines[1] = static_cast<double>(pixels_position[i    ] - pixels_position[i - 1]);