ocl: corner*: fix memory access in kernels; change error check to relative

modules/ocl/src/opencl/imgproc_calcHarris.cl

@@ -119,18 +119,16 @@ __kernel void calcHarris(__global const float *Dx, __global const float *Dy, __g
     __local float temp[6][THREADS];
 
 #ifdef BORDER_CONSTANT
-    bool dx_con,dy_con;
-    float dx_s, dy_s;
     for (int i=0; i < ksY+1; i++)
     {
-        dx_con = dx_startX+col >= 0 && dx_startX+col < dx_whole_cols && dx_startY+i >= 0 && dx_startY+i < dx_whole_rows;
-        dx_s = Dx[(dx_startY+i)*(dx_step>>2)+(dx_startX+col)];
-        dx_data[i] = dx_con ? dx_s : 0.0f;
-
-        dy_con = dy_startX+col >= 0 && dy_startX+col < dy_whole_cols && dy_startY+i >= 0 && dy_startY+i < dy_whole_rows;
-        dy_s = Dy[(dy_startY+i)*(dy_step>>2)+(dy_startX+col)];
-        dy_data[i] = dy_con ? dy_s : 0.0f;
-
+        bool dx_con = dx_startX+col >= 0 && dx_startX+col < dx_whole_cols && dx_startY+i >= 0 && dx_startY+i < dx_whole_rows;
+        int indexDx = (dx_startY+i)*(dx_step>>2)+(dx_startX+col);
+        float dx_s = dx_con ? Dx[indexDx] : 0.0f;
+        dx_data[i] = dx_s;
+        bool dy_con = dy_startX+col >= 0 && dy_startX+col < dy_whole_cols && dy_startY+i >= 0 && dy_startY+i < dy_whole_rows;
+        int indexDy = (dy_startY+i)*(dy_step>>2)+(dy_startX+col);
+        float dy_s = dx_con ? Dy[indexDy] : 0.0f;
+        dy_data[i] = dy_s;
         data[0][i] = dx_data[i] * dx_data[i];
         data[1][i] = dx_data[i] * dy_data[i];
         data[2][i] = dy_data[i] * dy_data[i];

modules/ocl/src/opencl/imgproc_calcMinEigenVal.cl

@@ -118,16 +118,16 @@ __kernel void calcMinEigenVal(__global const float *Dx,__global const float *Dy,
     __local float temp[6][THREADS];
 
 #ifdef BORDER_CONSTANT
-    bool dx_con, dy_con;
-    float dx_s, dy_s;
     for (int i=0; i < ksY+1; i++)
     {
-        dx_con = dx_startX+col >= 0 && dx_startX+col < dx_whole_cols && dx_startY+i >= 0 && dx_startY+i < dx_whole_rows;
-        dx_s = Dx[(dx_startY+i)*(dx_step>>2)+(dx_startX+col)];
-        dx_data[i] = dx_con ? dx_s : 0.0f;
-        dy_con = dy_startX+col >= 0 && dy_startX+col < dy_whole_cols && dy_startY+i >= 0 && dy_startY+i < dy_whole_rows;
-        dy_s = Dy[(dy_startY+i)*(dy_step>>2)+(dy_startX+col)];
-        dy_data[i] = dy_con ? dy_s : 0.0f;
+        bool dx_con = dx_startX+col >= 0 && dx_startX+col < dx_whole_cols && dx_startY+i >= 0 && dx_startY+i < dx_whole_rows;
+        int indexDx = (dx_startY+i)*(dx_step>>2)+(dx_startX+col);
+        float dx_s = dx_con ? Dx[indexDx] : 0.0f;
+        dx_data[i] = dx_s;
+        bool dy_con = dy_startX+col >= 0 && dy_startX+col < dy_whole_cols && dy_startY+i >= 0 && dy_startY+i < dy_whole_rows;
+        int indexDy = (dy_startY+i)*(dy_step>>2)+(dy_startX+col);
+        float dy_s = dx_con ? Dy[indexDy] : 0.0f;
+        dy_data[i] = dy_s;
         data[0][i] = dx_data[i] * dx_data[i];
         data[1][i] = dx_data[i] * dy_data[i];
         data[2][i] = dy_data[i] * dy_data[i];

modules/ocl/test/test_imgproc.cpp

@@ -93,14 +93,22 @@ PARAM_TEST_CASE(ImgprocTestBase, MatType,
         generateOclMat(gdst_whole, gdst_roi, dst_whole, roiSize, dstBorder);
     }
 
-    void Near(double threshold = 0.0)
+    void Near(double threshold = 0.0, bool relative = false)
     {
-        Mat whole, roi;
+        Mat roi, whole;
         gdst_whole.download(whole);
         gdst_roi.download(roi);
 
-        EXPECT_MAT_NEAR(dst_whole, whole, threshold);
-        EXPECT_MAT_NEAR(dst_roi, roi, threshold);
+        if (relative)
+        {
+            EXPECT_MAT_NEAR_RELATIVE(dst_whole, whole, threshold);
+            EXPECT_MAT_NEAR_RELATIVE(dst_roi, roi, threshold);
+        }
+        else
+        {
+            EXPECT_MAT_NEAR(dst_whole, whole, threshold);
+            EXPECT_MAT_NEAR(dst_roi, roi, threshold);
+        }
     }
 };
 
@@ -228,7 +236,7 @@ OCL_TEST_P(CornerMinEigenVal, Mat)
         cornerMinEigenVal(src_roi, dst_roi, blockSize, apertureSize, borderType);
         ocl::cornerMinEigenVal(gsrc_roi, gdst_roi, blockSize, apertureSize, borderType);
 
-        Near(0.02);
+        Near(1e-5, true);
     }
 }
 
@@ -248,7 +256,7 @@ OCL_TEST_P(CornerHarris, Mat)
         cornerHarris(src_roi, dst_roi, blockSize, apertureSize, k, borderType);
         ocl::cornerHarris(gsrc_roi, gdst_roi, blockSize, apertureSize, k, borderType);
 
-        Near(0.02);
+        Near(1e-5, true);
     }
 }