Added ippiHoughProbLine to cv::HoughLinesP

modules/imgproc/perf/perf_houghLines.cpp

@@ -8,11 +8,6 @@ using namespace perf;
 using std::tr1::make_tuple;
 using std::tr1::get;
 
-bool polarComp(Vec2f a, Vec2f b)
-{
-    return a[1] > b[1] || (a[1] == b[1] && a[0] < b[0]);
-}
-
 typedef std::tr1::tuple<string, double, double, int> Image_RhoStep_ThetaStep_Threshold_t;
 typedef perf::TestBaseWithParam<Image_RhoStep_ThetaStep_Threshold_t> Image_RhoStep_ThetaStep_Threshold;
 
@@ -20,8 +15,8 @@ PERF_TEST_P(Image_RhoStep_ThetaStep_Threshold, HoughLines,
             testing::Combine(
                 testing::Values( "cv/shared/pic5.png", "stitching/a1.png" ),
                 testing::Values( 1, 10 ),
-                testing::Values( 0.01, 0.1 ),
-                testing::Values( 300, 500 )
+                testing::Values( 0.05, 0.1 ),
+                testing::Values( 80 , 150 )
                 )
             )
 {
@@ -34,7 +29,7 @@ PERF_TEST_P(Image_RhoStep_ThetaStep_Threshold, HoughLines,
     if (image.empty())
         FAIL() << "Unable to load source image" << filename;
 
-    Canny(image, image, 0, 0);
+    Canny(image, image, 100, 150, 3);
 
     Mat lines;
     declare.time(60);

modules/imgproc/src/hough.cpp

@@ -103,7 +103,8 @@ HoughLinesStandard( const Mat& img, float rho, float theta,
     IppPointPolar delta = { rho, theta };
     IppPointPolar dstRoi[2] = {{(Ipp32f) -(width + height), (Ipp32f) min_theta},{(Ipp32f) (width + height), (Ipp32f) max_theta}};
     int bufferSize;
-    int ipp_linesMax = std::min(linesMax, numangle*numrho);
+    int nz = countNonZero(img);
+    int ipp_linesMax = std::min(linesMax, nz*numangle/threshold);
     int linesCount = 0;
     lines.resize(ipp_linesMax);
     IppStatus ok = ippiHoughLineGetSize_8u_C1R(srcSize, delta, ipp_linesMax, &bufferSize);
@@ -115,6 +116,8 @@ HoughLinesStandard( const Mat& img, float rho, float theta,
         lines.resize(linesCount);
         return;
     }
+    lines.clear();
+    setIppErrorStatus();
 #endif
 
     AutoBuffer<int> _accum((numangle+2) * (numrho+2));
@@ -424,6 +427,31 @@ HoughLinesProbabilistic( Mat& image,
     int numangle = cvRound(CV_PI / theta);
     int numrho = cvRound(((width + height) * 2 + 1) / rho);
 
+#if (defined(HAVE_IPP) && !defined(HAVE_IPP_ICV_ONLY) && IPP_VERSION_X100 >= 801 && 0)
+    IppiSize srcSize = { width, height };
+    IppPointPolar delta = { rho, theta };
+    IppiHoughProbSpec* pSpec;
+    int bufferSize, specSize;
+    int ipp_linesMax = std::min(linesMax, numangle*numrho);
+    int linesCount = 0;
+    lines.resize(ipp_linesMax);
+    IppStatus ok = ippiHoughProbLineGetSize_8u_C1R(srcSize, delta, &specSize, &bufferSize);
+    Ipp8u* buffer = ippsMalloc_8u(bufferSize);
+    pSpec = (IppiHoughProbSpec*) malloc(specSize);
+    if (ok >= 0) ok = ippiHoughProbLineInit_8u32f_C1R(srcSize, delta, ippAlgHintNone, pSpec);
+    if (ok >= 0) ok = ippiHoughProbLine_8u32f_C1R(image.data, image.step, srcSize, threshold, lineLength, lineGap, (IppiPoint*) &lines[0], ipp_linesMax, &linesCount, buffer, pSpec);
+
+    free(pSpec);
+    ippsFree(buffer);
+    if (ok >= 0)
+    {
+        lines.resize(linesCount);
+        return;
+    }
+    lines.clear();
+    setIppErrorStatus();
+#endif
+
     Mat accum = Mat::zeros( numangle, numrho, CV_32SC1 );
     Mat mask( height, width, CV_8UC1 );
     std::vector<float> trigtab(numangle*2);

modules/imgproc/test/test_houghLines.cpp

@@ -50,26 +50,26 @@ template<typename T>
 struct SimilarWith
 {
     T value;
-    double eps;
-    double rho_eps;
-    SimilarWith<T>(T val, double e, double r_e): value(val), eps(e), rho_eps(r_e) { };
+    float theta_eps;
+    float rho_eps;
+    SimilarWith<T>(T val, float e, float r_e): value(val), theta_eps(e), rho_eps(r_e) { };
     bool operator()(T other);
 };
 
 template<>
 bool SimilarWith<Vec2f>::operator()(Vec2f other)
 {
-    return abs(other[0] - value[0]) < rho_eps && abs(other[1] - value[1]) < eps;
+    return abs(other[0] - value[0]) < rho_eps && abs(other[1] - value[1]) < theta_eps;
 }
 
 template<>
 bool SimilarWith<Vec4i>::operator()(Vec4i other)
 {
-    return abs(other[0] - value[0]) < eps && abs(other[1] - value[1]) < eps && abs(other[2] - value[2]) < eps && abs(other[2] - value[2]) < eps;
+    return norm(value, other) < theta_eps;
 }
 
 template <typename T>
-int countMatIntersection(Mat expect, Mat actual, double eps, double rho_eps)
+int countMatIntersection(Mat expect, Mat actual, float eps, float rho_eps)
 {
     int count = 0;
     if (!expect.empty() && !actual.empty())
@@ -116,10 +116,10 @@ class StandartHoughLinesTest : public BaseHoughLineTest, public testing::TestWit
 public:
     StandartHoughLinesTest()
     {
-        picture_name = get<0>(GetParam());
-        rhoStep = get<1>(GetParam());
-        thetaStep = get<2>(GetParam());
-        threshold = get<3>(GetParam());
+        picture_name = std::tr1::get<0>(GetParam());
+        rhoStep = std::tr1::get<1>(GetParam());
+        thetaStep = std::tr1::get<2>(GetParam());
+        threshold = std::tr1::get<3>(GetParam());
         minLineLength = 0;
         maxGap = 0;
     }
@@ -131,12 +131,12 @@ class ProbabilisticHoughLinesTest : public BaseHoughLineTest, public testing::Te
 public:
     ProbabilisticHoughLinesTest()
     {
-        picture_name = get<0>(GetParam());
-        rhoStep = get<1>(GetParam());
-        thetaStep = get<2>(GetParam());
-        threshold = get<3>(GetParam());
-        minLineLength = get<4>(GetParam());
-        maxGap = get<5>(GetParam());
+        picture_name = std::tr1::get<0>(GetParam());
+        rhoStep = std::tr1::get<1>(GetParam());
+        thetaStep = std::tr1::get<2>(GetParam());
+        threshold = std::tr1::get<3>(GetParam());
+        minLineLength = std::tr1::get<4>(GetParam());
+        maxGap = std::tr1::get<5>(GetParam());
     }
 };
 
@@ -153,7 +153,7 @@ void BaseHoughLineTest::run_test(int type)
         xml = string(cvtest::TS::ptr()->get_data_path()) + "imgproc/HoughLinesP.xml";
 
     Mat dst;
-    Canny(src, dst, 50, 200, 3);
+    Canny(src, dst, 100, 150, 3);
     EXPECT_FALSE(dst.empty()) << "Failed Canny edge detector";
 
     Mat lines;
@@ -183,12 +183,11 @@ void BaseHoughLineTest::run_test(int type)
     read( fs[test_case_name], exp_lines, Mat() );
     fs.release();
 
-    float eps = 1e-2f;
     int count = -1;
     if (type == STANDART)
-        count = countMatIntersection<Vec2f>(exp_lines, lines, thetaStep + FLT_EPSILON, rhoStep + FLT_EPSILON);
+        count = countMatIntersection<Vec2f>(exp_lines, lines, (float) thetaStep + FLT_EPSILON, (float) rhoStep + FLT_EPSILON);
     else if (type == PROBABILISTIC)
-        count = countMatIntersection<Vec4i>(exp_lines, lines, thetaStep, 0.0);
+        count = countMatIntersection<Vec4i>(exp_lines, lines, 1e-4f, 0.f);
 
     EXPECT_GE( count, (int) (exp_lines.total() * 0.8) );
 }
@@ -205,13 +204,13 @@ TEST_P(ProbabilisticHoughLinesTest, regression)
 
 INSTANTIATE_TEST_CASE_P( ImgProc, StandartHoughLinesTest, testing::Combine(testing::Values( "shared/pic5.png", "../stitching/a1.png" ),
                                                                            testing::Values( 1, 10 ),
-                                                                           testing::Values( 0.01, 0.1 ),
-                                                                           testing::Values( 100, 200 )
+                                                                           testing::Values( 0.05, 0.1 ),
+                                                                           testing::Values( 80, 150 )
                                                                            ));
 
 INSTANTIATE_TEST_CASE_P( ImgProc, ProbabilisticHoughLinesTest, testing::Combine(testing::Values( "shared/pic5.png", "shared/pic1.png" ),
                                                                                 testing::Values( 5, 10 ),
-                                                                                testing::Values( 0.01, 0.1 ),
+                                                                                testing::Values( 0.05, 0.1 ),
                                                                                 testing::Values( 75, 150 ),
                                                                                 testing::Values( 0, 10 ),
                                                                                 testing::Values( 0, 4 )