From 8b6afd697dd6f7f0b9b02a2998146cf2373542e8 Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <vadim.pisarevsky@gmail.com>
Date: Mon, 22 Jul 2013 14:20:13 +0400
Subject: [PATCH] added call to IPP's ippiDistanceTransform_5x5_8u32f_C1R (by
 Alexander Kapustin)

---
 modules/imgproc/src/distransform.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/modules/imgproc/src/distransform.cpp b/modules/imgproc/src/distransform.cpp
index d3e6f90..a09b940 100644
--- a/modules/imgproc/src/distransform.cpp
+++ b/modules/imgproc/src/distransform.cpp
@@ -779,6 +779,16 @@ cvDistTransform( const void* srcarr, void* dstarr,
 
         if( !labels )
         {
+        #if defined (HAVE_IPP) && (IPP_VERSION_MAJOR >= 7)
+            if( maskSize == CV_DIST_MASK_5 )
+            {
+                IppiSize roi = { src->cols, src->rows };
+                if( ippiDistanceTransform_5x5_8u32f_C1R(
+                        src->data.ptr, src->step,
+                        dst->data.fl, dst->step, roi, _mask) >= 0 )
+                    return;
+            }
+        #endif
             CvDistTransFunc func = maskSize == CV_DIST_MASK_3 ?
                 icvDistanceTransform_3x3_C1R :
                 icvDistanceTransform_5x5_C1R;
-- 
2.7.4