1 // Copyright (c) 2018, ETH Zurich and UNC Chapel Hill.
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30 // Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de)
31
32 #define TEST_NAME "base/line"
33 #include "util/testing.h"
34
35 #include "base/line.h"
36
37 using namespace colmap;
38
BOOST_AUTO_TEST_CASE(TestDetectLineSegments)39 BOOST_AUTO_TEST_CASE(TestDetectLineSegments) {
40 Bitmap bitmap;
41 bitmap.Allocate(100, 100, false);
42 for (size_t i = 0; i < 100; ++i) {
43 bitmap.SetPixel(i, i, BitmapColor<uint8_t>(255));
44 }
45
46 const auto line_segments = DetectLineSegments(bitmap, 0);
47
48 BOOST_CHECK_EQUAL(line_segments.size(), 2);
49
50 const Eigen::Vector2d ref_start(0, 0);
51 const Eigen::Vector2d ref_end(100, 100);
52 BOOST_CHECK_LT((line_segments[0].start - ref_start).norm(), 5);
53 BOOST_CHECK_LT((line_segments[0].end - ref_end).norm(), 5);
54 BOOST_CHECK_LT((line_segments[1].start - ref_end).norm(), 5);
55 BOOST_CHECK_LT((line_segments[1].end - ref_start).norm(), 5);
56
57 BOOST_CHECK_EQUAL(DetectLineSegments(bitmap, 150).size(), 0);
58 }
59
BOOST_AUTO_TEST_CASE(TestClassifyLineSegmentOrientations)60 BOOST_AUTO_TEST_CASE(TestClassifyLineSegmentOrientations) {
61 Bitmap bitmap;
62 bitmap.Allocate(100, 100, false);
63 for (size_t i = 60; i < 100; ++i) {
64 bitmap.SetPixel(i, 50, BitmapColor<uint8_t>(255));
65 bitmap.SetPixel(50, i, BitmapColor<uint8_t>(255));
66 bitmap.SetPixel(i, i, BitmapColor<uint8_t>(255));
67 }
68
69 const auto line_segments = DetectLineSegments(bitmap, 0);
70 BOOST_CHECK_EQUAL(line_segments.size(), 6);
71
72 const auto orientations = ClassifyLineSegmentOrientations(line_segments);
73 BOOST_CHECK_EQUAL(orientations.size(), 6);
74
75 BOOST_CHECK(orientations[0] == LineSegmentOrientation::VERTICAL);
76 BOOST_CHECK(orientations[1] == LineSegmentOrientation::VERTICAL);
77 BOOST_CHECK(orientations[2] == LineSegmentOrientation::HORIZONTAL);
78 BOOST_CHECK(orientations[3] == LineSegmentOrientation::HORIZONTAL);
79 BOOST_CHECK(orientations[4] == LineSegmentOrientation::UNDEFINED);
80 BOOST_CHECK(orientations[5] == LineSegmentOrientation::UNDEFINED);
81 }
82