From 2f83c3b689423c74a296473057333cef20673109 Mon Sep 17 00:00:00 2001
From: Cavendish-Koo <1020057909@qq.com>
Date: Tue, 28 Sep 2021 21:18:07 +0800
Subject: [PATCH] fix the bug of HoughlinesSDIV

---
 modules/imgproc/src/hough.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/modules/imgproc/src/hough.cpp b/modules/imgproc/src/hough.cpp
index bbb6dfcbdb..e66be8b4b7 100644
--- a/modules/imgproc/src/hough.cpp
+++ b/modules/imgproc/src/hough.cpp
@@ -435,12 +435,14 @@ HoughLinesSDiv( InputArray image, OutputArray lines, int type,
         }
     }
 
+    int pos = (int)(lst.size() - 1);
+    if( pos >= 0 && lst[pos].rho < 0 )
+        lst.pop_back();
+
     lines.create((int)lst.size(), 1, type);
     Mat _lines = lines.getMat();
     for( size_t idx = 0; idx < lst.size(); idx++ )
     {
-        if( lst[idx].rho < 0 )
-            continue;
         if (type == CV_32FC2)
         {
             _lines.at<Vec2f>((int)idx) = Vec2f(lst[idx].rho, lst[idx].theta);