From f07525031b3069aae7a35fb4e045b25acbf38000 Mon Sep 17 00:00:00 2001
From: Pavel Vlasov <pavel.vlasov@intel.com>
Date: Wed, 26 Oct 2016 14:07:41 +0300
Subject: [PATCH] BORDER_ISOLATED support for Laplacian, boxFilter and
 morphology;

---
 modules/imgproc/src/deriv.cpp  | 12 +++++++-----
 modules/imgproc/src/morph.cpp  | 12 +++++++++---
 modules/imgproc/src/smooth.cpp |  9 ++++++---
 3 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/modules/imgproc/src/deriv.cpp b/modules/imgproc/src/deriv.cpp
index 77ba341309..d7d3e9560d 100644
--- a/modules/imgproc/src/deriv.cpp
+++ b/modules/imgproc/src/deriv.cpp
@@ -864,17 +864,19 @@ void cv::Laplacian( InputArray _src, OutputArray _dst, int ddepth, int ksize,
                    ocl_Laplacian5(_src, _dst, kd, ks, scale,
                                   delta, borderType, wdepth, ddepth))
 
+        Mat src = _src.getMat(), dst = _dst.getMat();
+        Point ofs;
+        Size wsz(src.cols, src.rows);
+        if(!(borderType&BORDER_ISOLATED))
+            src.locateROI( wsz, ofs );
+        borderType = (borderType&~BORDER_ISOLATED);
+
         const size_t STRIPE_SIZE = 1 << 14;
         Ptr<FilterEngine> fx = createSeparableLinearFilter(stype,
             wtype, kd, ks, Point(-1,-1), 0, borderType, borderType, Scalar() );
         Ptr<FilterEngine> fy = createSeparableLinearFilter(stype,
             wtype, ks, kd, Point(-1,-1), 0, borderType, borderType, Scalar() );
 
-        Mat src = _src.getMat(), dst = _dst.getMat();
-        Point ofs;
-        Size wsz(src.cols, src.rows);
-        src.locateROI( wsz, ofs );
-
         int y = fx->start(src, wsz, ofs), dsty = 0, dy = 0;
         fy->start(src, wsz, ofs);
         const uchar* sptr = src.ptr() + src.step[0] * y;
diff --git a/modules/imgproc/src/morph.cpp b/modules/imgproc/src/morph.cpp
index a0103b3143..674ebe3ffa 100644
--- a/modules/imgproc/src/morph.cpp
+++ b/modules/imgproc/src/morph.cpp
@@ -1855,15 +1855,21 @@ static void morphOp( int op, InputArray _src, OutputArray _dst,
 
     Point s_ofs;
     Size s_wsz(src.cols, src.rows);
-    src.locateROI(s_wsz, s_ofs);
     Point d_ofs;
     Size d_wsz(dst.cols, dst.rows);
-    dst.locateROI(d_wsz, d_ofs);
+    bool isolated = (borderType&BORDER_ISOLATED)?true:false;
+    borderType = (borderType&~BORDER_ISOLATED);
+
+    if(!isolated)
+    {
+        src.locateROI(s_wsz, s_ofs);
+        dst.locateROI(d_wsz, d_ofs);
+    }
 
     Ptr<hal::Morph> ctx = hal::Morph::create(op, src.type(), dst.type(), src.cols, src.rows,
                                                            kernel.type(), kernel.data, kernel.step, kernel.cols, kernel.rows,
                                                            anchor.x, anchor.y, borderType, borderValue.val, iterations,
-                                                           src.isSubmatrix(), src.data == dst.data);
+                                                           (src.isSubmatrix() && !isolated), src.data == dst.data);
     ctx->apply(src.data, src.step, dst.data, dst.step, src.cols, src.rows,
                s_wsz.width, s_wsz.height, s_ofs.x, s_ofs.y,
                d_wsz.width, d_wsz.height, d_ofs.x, d_ofs.y);
diff --git a/modules/imgproc/src/smooth.cpp b/modules/imgproc/src/smooth.cpp
index f0d6bfbfca..ca5488ce4d 100644
--- a/modules/imgproc/src/smooth.cpp
+++ b/modules/imgproc/src/smooth.cpp
@@ -1717,11 +1717,14 @@ void cv::boxFilter( InputArray _src, OutputArray _dst, int ddepth,
              ipp_boxfilter( _src,  _dst,  ddepth, ksize,  anchor, normalize,  borderType));
 #endif
 
-    Ptr<FilterEngine> f = createBoxFilter( src.type(), dst.type(),
-                        ksize, anchor, normalize, borderType );
     Point ofs;
     Size wsz(src.cols, src.rows);
-    src.locateROI( wsz, ofs );
+    if(!(borderType&BORDER_ISOLATED))
+        src.locateROI( wsz, ofs );
+    borderType = (borderType&~BORDER_ISOLATED);
+
+    Ptr<FilterEngine> f = createBoxFilter( src.type(), dst.type(),
+                        ksize, anchor, normalize, borderType );
 
     f->apply( src, dst, wsz, ofs );
 }