message: added minPoints Homography test
diff: @@ -63,6 +63,7 @@ namespace opencv_test { namespace {
  #define MESSAGE_RANSAC_DIFF "Reprojection error for current pair of points more than required."
  #define MAX_COUNT_OF_POINTS 303
  +#define MIN_COUNT_OF_POINTS 4
  #define COUNT_NORM_TYPES 3
  #define METHODS_COUNT 4
  @@ -249,7 +250,7 @@ void CV_HomographyTest::print_information_8(int _method, int j, int N, int k, in
  void CV_HomographyTest::run(int)
  {
  - for (int N = 4; N <= MAX_COUNT_OF_POINTS; ++N)
  + for (int N = MIN_COUNT_OF_POINTS; N <= MAX_COUNT_OF_POINTS; ++N)
  {
  RNG& rng = ts->get_rng();
  @@ -711,4 +712,27 @@ TEST(Calib3d_Homography, fromImages)
  ASSERT_GE(ninliers1, 80);
  }
  +TEST(Calib3d_Homography, minPoints)
  +{
  + float pt1data[] =
  + {
  + 2.80073029e+002f, 2.39591217e+002f, 2.21912201e+002f, 2.59783997e+002f
  + };
  +
  + float pt2data[] =
  + {
  + 1.84072723e+002f, 1.43591202e+002f, 1.25912483e+002f, 1.63783859e+002f
  + };
  +
  + int npoints = (int)(sizeof(pt1data)/sizeof(pt1data[0])/2);
  + printf("npoints = %d\n", npoints); // npoints = 2
  +
  + Mat p1(1, npoints, CV_32FC2, pt1data);
  + Mat p2(1, npoints, CV_32FC2, pt2data);
  + Mat mask;
  +
  + // findHomography should raise an error since npoints < MIN_COUNT_OF_POINTS
  + EXPECT_THROW(findHomography(p1, p2, RANSAC, 0.01, mask), cv::Exception);
  +}
  +
  }} // namespace
  