A more reasonable verify method for ocl::HOG accuracy test

modules/ocl/test/test_hog.cpp

@@ -53,12 +53,10 @@ PARAM_TEST_CASE(HOG,cv::Size,int)
 {
 	cv::Size winSize;
 	int type;
-	//vector<cv::ocl::Info> info;
 	virtual void SetUp()
 	{
 		winSize = GET_PARAM(0);
 		type = GET_PARAM(1);
-		//cv::ocl::getDevice(info);
 	}
 };
 
@@ -113,6 +111,12 @@ TEST_P(HOG, GetDescriptors)
 }
 
 
+bool match_rect(cv::Rect r1, cv::Rect r2, int threshold)
+{
+    return ((abs(r1.x - r2.x) < threshold) && (abs(r1.y - r2.y) < threshold) &&
+        (abs(r1.width - r2.width) < threshold) && (abs(r1.height - r2.height) < threshold));
+}
+
 TEST_P(HOG, Detect)
 {
     // Load image
@@ -161,32 +165,89 @@ TEST_P(HOG, Detect)
     }
 
     // OpenCL detection
-    std::vector<cv::Point> d_v_locations;
-    ocl_hog.detect(d_img, d_v_locations, 0);
-    cv::Mat d_locations(d_v_locations);
+    std::vector<cv::Rect> d_found;
+    ocl_hog.detectMultiScale(d_img, d_found, 0, cv::Size(8,8), cv::Size(0,0), 1.05, 2);
     
     // CPU detection
-    std::vector<cv::Point> v_locations;
+    std::vector<cv::Rect> found;
     switch (type)
     {
     case CV_8UC1:
-        hog.detect(img, v_locations, 0);
+        hog.detectMultiScale(img, found, 0, cv::Size(8,8), cv::Size(0,0), 1.05, 2);
         break;
     case CV_8UC4:
     default:
-        hog.detect(img_rgb, v_locations, 0);
+        hog.detectMultiScale(img_rgb, found, 0, cv::Size(8,8), cv::Size(0,0), 1.05, 2);
         break;
     }
-    cv::Mat locations(v_locations);
+    
+    // Ground-truth rectangular people window
+    cv::Rect win1_64x128(231, 190, 72, 144);
+    cv::Rect win2_64x128(621, 156, 97, 194);
+    cv::Rect win1_48x96(238, 198, 63, 126);
+    cv::Rect win2_48x96(619, 161, 92, 185);
+    cv::Rect win3_48x96(488, 136, 56, 112);
+
+    // Compare whether ground-truth windows are detected and compare the number of windows detected.
+    std::vector<int> d_comp(4);
+    std::vector<int> comp(4);
+    for(int i = 0; i < (int)d_comp.size(); i++)
+    {
+        d_comp[i] = 0;
+        comp[i] = 0;
+    }
+
+    int threshold = 10;
+    int val = 32;
+    d_comp[0] = d_found.size();
+    comp[0] = found.size();
+    if (winSize == cv::Size(48, 96))
+    {
+        for(int i = 0; i < (int)d_found.size(); i++)
+        {
+            if (match_rect(d_found[i], win1_48x96, threshold))
+                d_comp[1] = val;
+            if (match_rect(d_found[i], win2_48x96, threshold))
+                d_comp[2] = val;
+            if (match_rect(d_found[i], win3_48x96, threshold))
+                d_comp[3] = val;
+        }
+        for(int i = 0; i < (int)found.size(); i++)
+        {
+            if (match_rect(found[i], win1_48x96, threshold))
+                comp[1] = val;
+            if (match_rect(found[i], win2_48x96, threshold))
+                comp[2] = val;
+            if (match_rect(found[i], win3_48x96, threshold))
+                comp[3] = val;
+        }
+    }
+    else if (winSize == cv::Size(64, 128))
+    {
+        for(int i = 0; i < (int)d_found.size(); i++)
+        {
+            if (match_rect(d_found[i], win1_64x128, threshold))
+                d_comp[1] = val;
+            if (match_rect(d_found[i], win2_64x128, threshold))
+                d_comp[2] = val;
+        }
+        for(int i = 0; i < (int)found.size(); i++)
+        {
+            if (match_rect(found[i], win1_64x128, threshold))
+                comp[1] = val;
+            if (match_rect(found[i], win2_64x128, threshold))
+                comp[2] = val;
+        }
+    }
 
     char s[100]={0};
-    EXPECT_MAT_NEAR(d_locations, locations, 0, s);
+    EXPECT_MAT_NEAR(cv::Mat(d_comp), cv::Mat(comp), 3, s);
 }
 
 
-INSTANTIATE_TEST_CASE_P(OCL_ObjDetect, HOG, testing::Combine(
+INSTANTIATE_TEST_CASE_P(GPU_ImgProc, HOG, testing::Combine(
                         testing::Values(cv::Size(64, 128), cv::Size(48, 96)),
-                        testing::Values(MatType(CV_8UC1), MatType(CV_8UC3),MatType(CV_8UC4))));
+                        testing::Values(MatType(CV_8UC1), MatType(CV_8UC4))));
 
 
 #endif //HAVE_OPENCL