1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
// Copyright (C) 2018 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#include <dlib/python.h>
#include <dlib/data_io.h>
#include <pybind11/stl_bind.h>
#include <pybind11/stl.h>
namespace pybind11
{
// a version of bind_map that doesn't force it's own __repr__ on you.
template <typename Map, typename holder_type = std::unique_ptr<Map>, typename... Args>
class_<Map, holder_type> bind_map_no_default_repr(handle scope, const std::string &name, Args&&... args) {
using KeyType = typename Map::key_type;
using MappedType = typename Map::mapped_type;
using Class_ = class_<Map, holder_type>;
// If either type is a non-module-local bound type then make the map binding non-local as well;
// otherwise (e.g. both types are either module-local or converting) the map will be
// module-local.
auto tinfo = detail::get_type_info(typeid(MappedType));
bool local = !tinfo || tinfo->module_local;
if (local) {
tinfo = detail::get_type_info(typeid(KeyType));
local = !tinfo || tinfo->module_local;
}
Class_ cl(scope, name.c_str(), pybind11::module_local(local), std::forward<Args>(args)...);
cl.def(init<>());
cl.def("__bool__",
[](const Map &m) -> bool { return !m.empty(); },
"Check whether the map is nonempty"
);
cl.def("__iter__",
[](Map &m) { return make_key_iterator(m.begin(), m.end()); },
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
cl.def("items",
[](Map &m) { return make_iterator(m.begin(), m.end()); },
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
cl.def("__getitem__",
[](Map &m, const KeyType &k) -> MappedType & {
auto it = m.find(k);
if (it == m.end())
throw key_error();
return it->second;
},
return_value_policy::reference_internal // ref + keepalive
);
// Assignment provided only if the type is copyable
detail::map_assignment<Map, Class_>(cl);
cl.def("__delitem__",
[](Map &m, const KeyType &k) {
auto it = m.find(k);
if (it == m.end())
throw key_error();
return m.erase(it);
}
);
cl.def("__len__", &Map::size);
return cl;
}
}
using namespace dlib;
using namespace std;
using namespace dlib::image_dataset_metadata;
namespace py = pybind11;
typedef std::map<std::string,point> parts_list_type;
PYBIND11_MAKE_OPAQUE(parts_list_type);
dataset py_load_image_dataset_metadata(
const std::string& filename
)
{
dataset temp;
load_image_dataset_metadata(temp, filename);
return temp;
}
std::shared_ptr<std::map<std::string,point>> map_from_object(py::dict obj)
{
auto ret = std::make_shared<std::map<std::string,point>>();
for (auto& v : obj)
{
(*ret)[v.first.cast<std::string>()] = v.second.cast<point>();
}
return ret;
}
void bind_image_dataset_metadata(py::module &m_)
{
auto m = m_.def_submodule("image_dataset_metadata", "Routines and objects for working with dlib's image dataset metadata XML files.");
auto datasetstr = [](const dataset& item) { return "dlib.dataset_dataset_metadata.dataset: images:" + to_string(item.images.size()) + ", " + item.name; };
auto datasetrepr = [datasetstr](const dataset& item) { return "<"+datasetstr(item)+">"; };
py::class_<dataset>(m, "dataset",
"This object represents a labeled set of images. In particular, it contains the filename for each image as well as annotated boxes.")
.def("__str__", datasetstr)
.def("__repr__", datasetrepr)
.def_readwrite("images", &dataset::images)
.def_readwrite("comment", &dataset::comment)
.def_readwrite("name", &dataset::name);
auto imagestr = [](const image& item) { return "dlib.image_dataset_metadata.image: boxes:"+to_string(item.boxes.size())+ ", " + item.filename; };
auto imagerepr = [imagestr](const image& item) { return "<"+imagestr(item)+">"; };
py::class_<image>(m, "image", "This object represents an annotated image.")
.def_readwrite("filename", &image::filename)
.def("__str__", imagestr)
.def("__repr__", imagerepr)
.def_readwrite("boxes", &image::boxes);
auto partsstr = [](const std::map<std::string,point>& item) {
std::ostringstream sout;
sout << "{";
for (auto& v : item)
sout << "'" << v.first << "': " << v.second << ", ";
sout << "}";
return sout.str();
};
auto partsrepr = [](const std::map<std::string,point>& item) {
std::ostringstream sout;
sout << "dlib.image_dataset_metadata.parts({\n";
for (auto& v : item)
sout << "'" << v.first << "': dlib.point" << v.second << ",\n";
sout << "})";
return sout.str();
};
py::bind_map_no_default_repr<std::map<std::string,point>, std::shared_ptr<std::map<std::string,point>> >(m, "parts",
"This object is a dictionary mapping string names to object part locations.")
.def(py::init(&map_from_object))
.def("__str__", partsstr)
.def("__repr__", partsrepr);
auto rectstr = [](const rectangle& r) {
std::ostringstream sout;
sout << "dlib.rectangle(" << r.left() << "," << r.top() << "," << r.right() << "," << r.bottom() << ")";
return sout.str();
};
auto boxstr = [rectstr](const box& item) { return "dlib.image_dataset_metadata.box at " + rectstr(item.rect); };
auto boxrepr = [boxstr](const box& item) { return "<"+boxstr(item)+">"; };
py::class_<box> pybox(m, "box",
"This object represents an annotated rectangular area of an image. \n"
"It is typically used to mark the location of an object such as a \n"
"person, car, etc.\n"
"\n"
"The main variable of interest is rect. It gives the location of \n"
"the box. All the other variables are optional." ); pybox
.def("__str__", boxstr)
.def("__repr__", boxrepr)
.def_readwrite("rect", &box::rect)
.def_readonly("parts", &box::parts)
.def_readwrite("label", &box::label)
.def_readwrite("difficult", &box::difficult)
.def_readwrite("truncated", &box::truncated)
.def_readwrite("occluded", &box::occluded)
.def_readwrite("ignore", &box::ignore)
.def_readwrite("pose", &box::pose)
.def_readwrite("detection_score", &box::detection_score)
.def_readwrite("angle", &box::angle)
.def_readwrite("gender", &box::gender)
.def_readwrite("age", &box::age);
py::enum_<gender_t>(pybox,"gender_type")
.value("MALE", gender_t::MALE)
.value("FEMALE", gender_t::FEMALE)
.value("UNKNOWN", gender_t::UNKNOWN)
.export_values();
m.def("save_image_dataset_metadata", &save_image_dataset_metadata, py::arg("data"), py::arg("filename"),
"Writes the contents of the meta object to a file with the given filename. The file will be in an XML format."
);
m.def("load_image_dataset_metadata", &py_load_image_dataset_metadata, py::arg("filename"),
"Attempts to interpret filename as a file containing XML formatted data as produced "
"by the save_image_dataset_metadata() function. The data is loaded and returned as a dlib.image_dataset_metadata.dataset object."
);
}