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42
43 #include "test_precomp.hpp"
44 #include <string>
45
46 using namespace cv;
47 using namespace std;
48
49 class CV_ConnectedComponentsTest : public cvtest::BaseTest
50 {
51 public:
52 CV_ConnectedComponentsTest();
53 ~CV_ConnectedComponentsTest();
54 protected:
55 void run(int);
56 };
57
CV_ConnectedComponentsTest()58 CV_ConnectedComponentsTest::CV_ConnectedComponentsTest() {}
~CV_ConnectedComponentsTest()59 CV_ConnectedComponentsTest::~CV_ConnectedComponentsTest() {}
60
run(int)61 void CV_ConnectedComponentsTest::run( int /* start_from */)
62 {
63 string exp_path = string(ts->get_data_path()) + "connectedcomponents/ccomp_exp.png";
64 Mat exp = imread(exp_path, 0);
65 Mat orig = imread(string(ts->get_data_path()) + "connectedcomponents/concentric_circles.png", 0);
66
67 if (orig.empty())
68 {
69 ts->set_failed_test_info( cvtest::TS::FAIL_INVALID_TEST_DATA );
70 return;
71 }
72
73 Mat bw = orig > 128;
74 Mat labelImage;
75 int nLabels = connectedComponents(bw, labelImage, 8, CV_32S);
76
77 for(int r = 0; r < labelImage.rows; ++r){
78 for(int c = 0; c < labelImage.cols; ++c){
79 int l = labelImage.at<int>(r, c);
80 bool pass = l >= 0 && l <= nLabels;
81 if(!pass){
82 ts->set_failed_test_info( cvtest::TS::FAIL_INVALID_OUTPUT );
83 return;
84 }
85 }
86 }
87
88 if( exp.empty() || orig.size() != exp.size() )
89 {
90 imwrite(exp_path, labelImage);
91 exp = labelImage;
92 }
93
94 if (0 != cvtest::norm(labelImage > 0, exp > 0, NORM_INF))
95 {
96 ts->set_failed_test_info( cvtest::TS::FAIL_MISMATCH );
97 return;
98 }
99 if (nLabels != cvtest::norm(labelImage, NORM_INF)+1)
100 {
101 ts->set_failed_test_info( cvtest::TS::FAIL_MISMATCH );
102 return;
103 }
104 ts->set_failed_test_info(cvtest::TS::OK);
105 }
106
TEST(Imgproc_ConnectedComponents,regression)107 TEST(Imgproc_ConnectedComponents, regression) { CV_ConnectedComponentsTest test; test.safe_run(); }
108
