| 655 | // ---------------------------------------------------------------------------------------- |
| 656 | |
| 657 | void test_find_affine_transform() |
| 658 | { |
| 659 | //typedef dlib::vector<double,2> vect; |
| 660 | typedef point vect; |
| 661 | std::vector<vect> from, to; |
| 662 | |
| 663 | from.push_back(vect(0,0)); |
| 664 | to.push_back(vect(0,1)); |
| 665 | |
| 666 | from.push_back(vect(0,1)); |
| 667 | to.push_back(vect(1,1)); |
| 668 | |
| 669 | from.push_back(vect(1,1)); |
| 670 | to.push_back(vect(1,0)); |
| 671 | |
| 672 | from.push_back(vect(1,0)); |
| 673 | to.push_back(vect(0,0)); |
| 674 | |
| 675 | point_transform_affine t = find_affine_transform(from,to); |
| 676 | point_transform_affine tinv = inv(t); |
| 677 | |
| 678 | for (unsigned long i = 0; i < from.size(); ++i) |
| 679 | { |
| 680 | dlog << LINFO << "affine transformation error: "<< length(t(from[i])-to[i]); |
| 681 | DLIB_TEST(length(t(from[i])-to[i]) < 1e-14); |
| 682 | DLIB_TEST(length(tinv(t(from[i]))-from[i]) < 1e-14); |
| 683 | DLIB_TEST(length(t(tinv(from[i]))-from[i]) < 1e-14); |
| 684 | |
| 685 | point_transform_affine temp = t*inv(t); |
| 686 | DLIB_TEST(length(temp.get_b()) < 1e-14); |
| 687 | DLIB_TEST(max(abs(temp.get_m() - identity_matrix<double>(2))) < 1e-14); |
| 688 | } |
| 689 | |
| 690 | ostringstream sout; |
| 691 | serialize(t, sout); |
| 692 | istringstream sin(sout.str()); |
| 693 | point_transform_affine t2; |
| 694 | DLIB_TEST(length(t2(point(2,3)) - point(2,3)) < 1e-14); |
| 695 | deserialize(t2, sin); |
| 696 | DLIB_TEST(max(abs(t2.get_m()-t.get_m())) < 1e-14); |
| 697 | DLIB_TEST(max(abs(t2.get_b()-t.get_b())) < 1e-14); |
| 698 | } |
| 699 | |
| 700 | // ---------------------------------------------------------------------------------------- |
| 701 |
no test coverage detected