added perf test for gpu::erode, fixed docs, refactored perf. sample

doc/gpu_initialization.tex

@@ -113,7 +113,7 @@ Returns true if the device has the given GPU feature, otherwise false.
 
 \cvdefCpp{bool DeviceInfo::has(GpuFeature feature);}
 \begin{description}
-\cvarg{feature}{Feature to be checked. See \hyperref[cpp.gpu.GpuFeature]{gpu::GpuFeature}.}
+\cvarg{feature}{Feature to be checked. See \hyperref[cpp.gpu.GpuFeature]{cv::gpu::GpuFeature}.}
 \end{description}
 
 
@@ -131,7 +131,7 @@ This class provides functionality (as set of static methods) for checking which
 The following method checks whether the module was built with the support of the given feature:
 \cvdefCpp{static bool builtWith(GpuFeature feature);}
 \begin{description}
-\cvarg{feature}{Feature to be checked. See \hyperref[cpp.gpu.GpuFeature]{gpu::GpuFeature}.}
+\cvarg{feature}{Feature to be checked. See \hyperref[cpp.gpu.GpuFeature]{cv::gpu::GpuFeature}.}
 \end{description}
 
 There are a set of methods for checking whether the module contains intermediate (PTX) or binary GPU code for the given architecture(s):

samples/gpu/performance/performance.h

@@ -125,7 +125,6 @@ private:
     void name##_test::run()
 
 #define SUBTEST TestSystem::instance().subtest()
-#define DESCRIPTION TestSystem::instance().subtest()
 #define CPU_ON TestSystem::instance().cpuOn()
 #define GPU_ON TestSystem::instance().gpuOn()
 #define CPU_OFF TestSystem::instance().cpuOff()

samples/gpu/performance/tests.cpp

@@ -167,32 +167,32 @@ TEST(cornerHarris)
 }
 
 
-//TEST(integral)
-//{
-//    Mat src, sum;
-//    gpu::GpuMat d_src, d_sum, d_buf;
-//
-//    int size = 4000;
-//
-//    gen(src, size, size, CV_8U, 0, 256);
-//    sum.create(size + 1, size + 1, CV_32S);
-//
-//    d_src = src;
-//    d_sum.create(size + 1, size + 1, CV_32S);
-//
-//    for (int i = 0; i < 5; ++i)
-//    {
-//        SUBTEST << "size " << size << ", 8U";
-//
-//        CPU_ON;
-//        integral(src, sum);
-//        CPU_OFF;
-//
-//        GPU_ON;
-//        gpu::integralBuffered(d_src, d_sum, d_buf);
-//        GPU_OFF;
-//    }
-//}
+TEST(integral)
+{
+    Mat src, sum;
+    gpu::GpuMat d_src, d_sum, d_buf;
+
+    int size = 4000;
+
+    gen(src, size, size, CV_8U, 0, 256);
+    sum.create(size + 1, size + 1, CV_32S);
+
+    d_src = src;
+    d_sum.create(size + 1, size + 1, CV_32S);
+
+    for (int i = 0; i < 5; ++i)
+    {
+        SUBTEST << "size " << size << ", 8U";
+
+        CPU_ON;
+        integral(src, sum);
+        CPU_OFF;
+
+        GPU_ON;
+        gpu::integralBuffered(d_src, d_sum, d_buf);
+        GPU_OFF;
+    }
+}
 
 
 TEST(norm)
@@ -653,4 +653,31 @@ TEST(cvtColor)
     
     cv::swap(src, dst);
     d_src.swap(d_dst);
+}
+
+
+TEST(erode)
+{
+    Mat src, dst, ker;
+    gpu::GpuMat d_src, d_dst;
+
+    for (int size = 2000; size <= 4000; size += 1000)
+    {
+        SUBTEST << "size " << size;
+
+        gen(src, size, size, CV_8UC4, Scalar::all(0), Scalar::all(256));
+        ker = getStructuringElement(MORPH_RECT, Size(3, 3));
+        dst.create(src.size(), src.type());
+
+        CPU_ON;
+        erode(src, dst, ker);
+        CPU_OFF;
+
+        d_src = src;
+        d_dst.create(d_src.size(), d_src.type());
+
+        GPU_ON;
+        gpu::erode(d_src, d_dst, ker);
+        GPU_OFF;
+    }
 }
\ No newline at end of file

samples/gpu/stereo_multi.cpp

@@ -60,10 +60,13 @@ void inline contextOff()
     safeCall(cuCtxPopCurrent(&prev_context));
 }
 
+// GPUs data
 GpuMat d_left[2];
 GpuMat d_right[2];
 StereoBM_GPU* bm[2];
 GpuMat d_result[2];
+
+// CPU result
 Mat result;
 
 int main(int argc, char** argv)