fix test error on Tinker Board (OpenCL on Arm platform)

* loosen some test threshold mainly for integer types
  * use relative error for floating points result
  * avoid division by zero by following the comment
  * fix the indentation

modules/core/test/ocl/test_arithm.cpp

@@ -329,11 +329,14 @@ OCL_TEST_P(Mul, Mat_Scale)
         OCL_OFF(cv::multiply(src1_roi, src2_roi, dst1_roi, val[0]));
         OCL_ON(cv::multiply(usrc1_roi, usrc2_roi, udst1_roi, val[0]));
 
+        if (udst1_roi.depth() >= CV_32F)
 #ifdef __ANDROID__
-        Near(udst1_roi.depth() >= CV_32F ? 2e-1 : 1);
+            Near(2e-1, true);
 #else
-        Near(udst1_roi.depth() >= CV_32F ? 1e-3 : 1);
+            Near(1e-3, true);
 #endif
+        else
+            Near(1);
     }
 }
 
@@ -867,7 +870,10 @@ OCL_TEST_P(AddWeighted, Mat)
         OCL_OFF(cv::addWeighted(src1_roi, alpha, src2_roi, beta, gama, dst1_roi));
         OCL_ON(cv::addWeighted(usrc1_roi, alpha, usrc2_roi, beta, gama, udst1_roi));
 
-        Near(3e-4);
+        if(dst1_roi.depth() >= CV_32F)
+            Near(3e-4, true);
+        else
+            Near(1);
     }
 }
 

modules/imgproc/test/ocl/test_color.cpp

@@ -166,10 +166,12 @@ OCL_TEST_P(CvtColor, YUV2BGRA) { performTest(3, 4, CVTCODE(YUV2BGR)); }
 
 // RGB <-> YCrCb
 
-OCL_TEST_P(CvtColor, RGB2YCrCb) { performTest(3, 3, CVTCODE(RGB2YCrCb)); }
-OCL_TEST_P(CvtColor, BGR2YCrCb) { performTest(3, 3, CVTCODE(BGR2YCrCb)); }
-OCL_TEST_P(CvtColor, RGBA2YCrCb) { performTest(4, 3, CVTCODE(RGB2YCrCb)); }
-OCL_TEST_P(CvtColor, BGRA2YCrCb) { performTest(4, 3, CVTCODE(BGR2YCrCb)); }
+#define EPS_FOR_FLOATING_POINT(e) (CV_32F <= depth ? e : 1)
+
+OCL_TEST_P(CvtColor, RGB2YCrCb) { performTest(3, 3, CVTCODE(RGB2YCrCb), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor, BGR2YCrCb) { performTest(3, 3, CVTCODE(BGR2YCrCb), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor, RGBA2YCrCb) { performTest(4, 3, CVTCODE(RGB2YCrCb), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor, BGRA2YCrCb) { performTest(4, 3, CVTCODE(BGR2YCrCb), EPS_FOR_FLOATING_POINT(1e-3)); }
 OCL_TEST_P(CvtColor, YCrCb2RGB) { performTest(3, 3, CVTCODE(YCrCb2RGB)); }
 OCL_TEST_P(CvtColor, YCrCb2BGR) { performTest(3, 3, CVTCODE(YCrCb2BGR)); }
 OCL_TEST_P(CvtColor, YCrCb2RGBA) { performTest(3, 4, CVTCODE(YCrCb2RGB)); }
@@ -200,7 +202,7 @@ OCL_TEST_P(CvtColor, XYZ2BGRA) { performTest(3, 4, CVTCODE(XYZ2BGR), IPP_EPS); }
 #ifdef HAVE_IPP
 #define IPP_EPS depth <= CV_32S ? 1 : 4e-5
 #else
-#define IPP_EPS 1e-3
+#define IPP_EPS EPS_FOR_FLOATING_POINT(1e-3)
 #endif
 
 typedef CvtColor CvtColor8u32f;
@@ -366,14 +368,14 @@ struct CvtColor_YUV2RGB_420 :
     }
 };
 
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGBA_NV12) { performTest(1, 4, CVTCODE(YUV2RGBA_NV12)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGRA_NV12) { performTest(1, 4, CVTCODE(YUV2BGRA_NV12)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGB_NV12) { performTest(1, 3, CVTCODE(YUV2RGB_NV12)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGR_NV12) { performTest(1, 3, CVTCODE(YUV2BGR_NV12)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGBA_NV21) { performTest(1, 4, CVTCODE(YUV2RGBA_NV21)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGRA_NV21) { performTest(1, 4, CVTCODE(YUV2BGRA_NV21)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGB_NV21) { performTest(1, 3, CVTCODE(YUV2RGB_NV21)); }
-OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGR_NV21) { performTest(1, 3, CVTCODE(YUV2BGR_NV21)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGBA_NV12) { performTest(1, 4, CVTCODE(YUV2RGBA_NV12), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGRA_NV12) { performTest(1, 4, CVTCODE(YUV2BGRA_NV12), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGB_NV12) { performTest(1, 3, CVTCODE(YUV2RGB_NV12), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGR_NV12) { performTest(1, 3, CVTCODE(YUV2BGR_NV12), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGBA_NV21) { performTest(1, 4, CVTCODE(YUV2RGBA_NV21), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGRA_NV21) { performTest(1, 4, CVTCODE(YUV2BGRA_NV21), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGB_NV21) { performTest(1, 3, CVTCODE(YUV2RGB_NV21), EPS_FOR_FLOATING_POINT(1e-3)); }
+OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGR_NV21) { performTest(1, 3, CVTCODE(YUV2BGR_NV21), EPS_FOR_FLOATING_POINT(1e-3)); }
 OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGBA_YV12) { performTest(1, 4, CVTCODE(YUV2RGBA_YV12)); }
 OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2BGRA_YV12) { performTest(1, 4, CVTCODE(YUV2BGRA_YV12)); }
 OCL_TEST_P(CvtColor_YUV2RGB_420, YUV2RGB_YV12) { performTest(1, 3, CVTCODE(YUV2RGB_YV12)); }

modules/video/test/ocl/test_optflowpyrlk.cpp

@@ -136,7 +136,7 @@ OCL_TEST_P(PyrLKOpticalFlow, Mat)
                 continue;
             }
 
-            eq = std::abs(cpuErr[i] - err[i]) < 0.01;
+            eq = std::abs(cpuErr[i] - err[i]) <= (0.01 * std::max(1.0f, cpuErr[i]));
             if(!eq)
                 ++errmatch;
         }