Blender  V3.3
predict_tracks_test.cc
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1 // Copyright (c) 2014 libmv authors.
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21 // Author: mierle@gmail.com (Keir Mierle)
22 
24 
25 #include "libmv/autotrack/marker.h"
26 #include "libmv/autotrack/tracks.h"
27 #include "libmv/logging/logging.h"
28 #include "testing/testing.h"
29 
30 namespace mv {
31 
32 static void AddMarker(int frame, float x, float y, Tracks* tracks) {
33  Marker marker;
34  marker.clip = marker.track = 0;
35  marker.frame = frame;
36  marker.center.x() = x;
37  marker.center.y() = y;
38  marker.patch.coordinates << x - 1, y - 1, x + 1, y - 1, x + 1, y + 1, x - 1,
39  y + 1;
40  tracks->AddMarker(marker);
41 }
42 
43 TEST(PredictMarkerPosition, EasyLinearMotion) {
44  Tracks tracks;
45  AddMarker(0, 1.0, 0.0, &tracks);
46  AddMarker(1, 2.0, 5.0, &tracks);
47  AddMarker(2, 3.0, 10.0, &tracks);
48  AddMarker(3, 4.0, 15.0, &tracks);
49  AddMarker(4, 5.0, 20.0, &tracks);
50  AddMarker(5, 6.0, 25.0, &tracks);
51  AddMarker(6, 7.0, 30.0, &tracks);
52  AddMarker(7, 8.0, 35.0, &tracks);
53 
54  Marker predicted;
55  predicted.clip = 0;
56  predicted.track = 0;
57  predicted.frame = 8;
58 
60  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
61  LG << "Got error: " << error;
62  EXPECT_LT(error, 0.1);
63 
64  // Check the patch coordinates as well.
65  double x = 9, y = 40.0;
66  Quad2Df expected_patch;
67  expected_patch.coordinates << x - 1, y - 1, x + 1, y - 1, x + 1, y + 1, x - 1,
68  y + 1;
69 
70  error = (expected_patch.coordinates - predicted.patch.coordinates).norm();
71  LG << "Patch error: " << error;
72  EXPECT_LT(error, 0.1);
73 }
74 
75 TEST(PredictMarkerPosition, EasyBackwardLinearMotion) {
76  Tracks tracks;
77  AddMarker(8, 1.0, 0.0, &tracks);
78  AddMarker(7, 2.0, 5.0, &tracks);
79  AddMarker(6, 3.0, 10.0, &tracks);
80  AddMarker(5, 4.0, 15.0, &tracks);
81  AddMarker(4, 5.0, 20.0, &tracks);
82  AddMarker(3, 6.0, 25.0, &tracks);
83  AddMarker(2, 7.0, 30.0, &tracks);
84  AddMarker(1, 8.0, 35.0, &tracks);
85 
86  Marker predicted;
87  predicted.clip = 0;
88  predicted.track = 0;
89  predicted.frame = 0;
90 
92  LG << predicted;
93  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
94  LG << "Got error: " << error;
95  EXPECT_LT(error, 0.1);
96 
97  // Check the patch coordinates as well.
98  double x = 9.0, y = 40.0;
99  Quad2Df expected_patch;
100  expected_patch.coordinates << x - 1, y - 1, x + 1, y - 1, x + 1, y + 1, x - 1,
101  y + 1;
102 
103  error = (expected_patch.coordinates - predicted.patch.coordinates).norm();
104  LG << "Patch error: " << error;
105  EXPECT_LT(error, 0.1);
106 }
107 
109  Tracks tracks;
110  AddMarker(0, 1.0, 0.0, &tracks);
111  AddMarker(1, 2.0, 5.0, &tracks);
112  AddMarker(2, 3.0, 10.0, &tracks);
113  AddMarker(3, 4.0, 15.0, &tracks);
114  AddMarker(4, 5.0, 20.0, &tracks);
115  AddMarker(5, 6.0, 25.0, &tracks);
116  AddMarker(6, 7.0, 30.0, &tracks);
117  // Missing frame 7!
118 
119  Marker predicted;
120  predicted.clip = 0;
121  predicted.track = 0;
122  predicted.frame = 8;
123 
125  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
126  LG << "Got error: " << error;
127  EXPECT_LT(error, 0.1);
128 }
129 
130 TEST(PredictMarkerPosition, FourFrameGap) {
131  Tracks tracks;
132  AddMarker(0, 1.0, 0.0, &tracks);
133  AddMarker(1, 2.0, 5.0, &tracks);
134  AddMarker(2, 3.0, 10.0, &tracks);
135  AddMarker(3, 4.0, 15.0, &tracks);
136  // Missing frames 4, 5, 6, 7.
137 
138  Marker predicted;
139  predicted.clip = 0;
140  predicted.track = 0;
141  predicted.frame = 8;
142 
144  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
145  LG << "Got error: " << error;
146  EXPECT_LT(error, 2.0); // Generous error due to larger prediction window.
147 }
148 
149 TEST(PredictMarkerPosition, MultipleGaps) {
150  Tracks tracks;
151  AddMarker(0, 1.0, 0.0, &tracks);
152  AddMarker(1, 2.0, 5.0, &tracks);
153  AddMarker(2, 3.0, 10.0, &tracks);
154  // AddMarker(3, 4.0, 15.0, &tracks); // Note the 3-frame gap.
155  // AddMarker(4, 5.0, 20.0, &tracks);
156  // AddMarker(5, 6.0, 25.0, &tracks);
157  AddMarker(6, 7.0, 30.0, &tracks); // Intermediate measurement.
158  // AddMarker(7, 8.0, 35.0, &tracks);
159 
160  Marker predicted;
161  predicted.clip = 0;
162  predicted.track = 0;
163  predicted.frame = 8;
164 
166  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
167  LG << "Got error: " << error;
168  EXPECT_LT(error, 1.0); // Generous error due to larger prediction window.
169 }
170 
171 TEST(PredictMarkerPosition, MarkersInRandomOrder) {
172  Tracks tracks;
173 
174  // This is the same as the easy, except that the tracks are randomly ordered.
175  AddMarker(0, 1.0, 0.0, &tracks);
176  AddMarker(2, 3.0, 10.0, &tracks);
177  AddMarker(7, 8.0, 35.0, &tracks);
178  AddMarker(5, 6.0, 25.0, &tracks);
179  AddMarker(4, 5.0, 20.0, &tracks);
180  AddMarker(3, 4.0, 15.0, &tracks);
181  AddMarker(6, 7.0, 30.0, &tracks);
182  AddMarker(1, 2.0, 5.0, &tracks);
183 
184  Marker predicted;
185  predicted.clip = 0;
186  predicted.track = 0;
187  predicted.frame = 8;
188 
190  double error = (libmv::Vec2f(9.0, 40.0) - predicted.center).norm();
191  LG << "Got error: " << error;
192  EXPECT_LT(error, 0.1);
193 }
194 
195 } // namespace mv
_GL_VOID GLfloat value _GL_VOID_RET _GL_VOID const GLuint GLboolean *residences _GL_BOOL_RET _GL_VOID GLsizei GLfloat GLfloat GLfloat GLfloat const GLubyte *bitmap _GL_VOID_RET _GL_VOID GLenum const void *lists _GL_VOID_RET _GL_VOID const GLdouble *equation _GL_VOID_RET _GL_VOID GLdouble GLdouble blue _GL_VOID_RET _GL_VOID GLfloat GLfloat blue _GL_VOID_RET _GL_VOID GLint GLint blue _GL_VOID_RET _GL_VOID GLshort GLshort blue _GL_VOID_RET _GL_VOID GLubyte GLubyte blue _GL_VOID_RET _GL_VOID GLuint GLuint blue _GL_VOID_RET _GL_VOID GLushort GLushort blue _GL_VOID_RET _GL_VOID GLbyte GLbyte GLbyte alpha _GL_VOID_RET _GL_VOID GLdouble GLdouble GLdouble alpha _GL_VOID_RET _GL_VOID GLfloat GLfloat GLfloat alpha _GL_VOID_RET _GL_VOID GLint GLint GLint alpha _GL_VOID_RET _GL_VOID GLshort GLshort GLshort alpha _GL_VOID_RET _GL_VOID GLubyte GLubyte GLubyte alpha _GL_VOID_RET _GL_VOID GLuint GLuint GLuint alpha _GL_VOID_RET _GL_VOID GLushort GLushort GLushort alpha _GL_VOID_RET _GL_VOID GLenum mode _GL_VOID_RET _GL_VOID GLint y
SIMD_FORCE_INLINE btScalar norm() const
Return the norm (length) of the vector.
Definition: btVector3.h:263
#define LG
static void error(const char *str)
Definition: meshlaplacian.c:51
Eigen::Vector2f Vec2f
Definition: numeric.h:125
bool PredictMarkerPosition(const Tracks &tracks, const PredictDirection direction, Marker *marker)
static void AddMarker(int frame, float x, float y, Tracks *tracks)
TEST(PredictMarkerPosition, EasyLinearMotion)
int frame
Definition: marker.h:42
int clip
Definition: marker.h:41
Vec2f center
Definition: marker.h:47
Quad2Df patch
Definition: marker.h:51
int track
Definition: marker.h:43
Eigen::Matrix< T, 4, D > coordinates
Definition: quad.h:50
ListBase tracks
Definition: tracking.c:60