forked from hybridgroup/gocv
/
face_recognizer.go
119 lines (95 loc) · 3.59 KB
/
face_recognizer.go
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
package pvl
/*
#include <stdlib.h>
#include "face_recognizer.h"
*/
import "C"
import (
"unsafe"
"gocv.io/x/gocv"
)
// UnknownFace is when the FaceRecognizer cannot identify a Face.
const UnknownFace = -10000
// FaceRecognizer is a wrapper around the cv::pvl::FaceRecognizer.
type FaceRecognizer struct {
// C.FaceRecognizer
p unsafe.Pointer
}
// NewFaceRecognizer returns a new PVL FaceRecognizer.
func NewFaceRecognizer() FaceRecognizer {
return FaceRecognizer{p: unsafe.Pointer(C.FaceRecognizer_New())}
}
// Close FaceRecognizer.
func (f *FaceRecognizer) Close() error {
C.FaceRecognizer_Close((C.FaceRecognizer)(f.p))
f.p = nil
return nil
}
// Clear FaceRecognizer data.
func (f *FaceRecognizer) Clear() {
C.FaceRecognizer_Clear((C.FaceRecognizer)(f.p))
}
// Empty checks if FaceRecognizer has no data.
func (f *FaceRecognizer) Empty() bool {
return bool(C.FaceRecognizer_Empty((C.FaceRecognizer)(f.p)))
}
// SetTrackingModeEnabled sets if the PVL FaceRecognizer tracking mode is enabled.
func (f *FaceRecognizer) SetTrackingModeEnabled(enabled bool) {
C.FaceRecognizer_SetTrackingModeEnabled((C.FaceRecognizer)(f.p), C.bool(enabled))
}
// CreateNewPersonID gets the next available ID from the PVL FaceRecognizer to be added to the database.
func (f *FaceRecognizer) CreateNewPersonID() int {
return int(C.FaceRecognizer_CreateNewPersonID((C.FaceRecognizer)(f.p)))
}
// GetNumRegisteredPersons gets the number of people in the current database.
func (f *FaceRecognizer) GetNumRegisteredPersons() int {
return int(C.FaceRecognizer_GetNumRegisteredPersons((C.FaceRecognizer)(f.p)))
}
// Recognize recognizes faces with the given image and face information.
func (f *FaceRecognizer) Recognize(img gocv.Mat, faces []Face) (personIDs, confidences []int) {
cFaceArray := make([]C.Face, len(faces))
for i, r := range faces {
cFaceArray[i] = r.p
}
cFaces := C.struct_Faces{
faces: (*C.Face)(&cFaceArray[0]),
length: C.int(len(faces)),
}
pids := C.IntVector{}
confs := C.IntVector{}
C.FaceRecognizer_Recognize((C.FaceRecognizer)(f.p), C.Mat(img.Ptr()), cFaces, &pids, &confs)
aPids := (*[1 << 30]C.int)(unsafe.Pointer(pids.val))
for i := 0; i < int(pids.length); i++ {
personIDs = append(personIDs, int(aPids[i]))
}
aConfs := (*[1 << 30]C.int)(unsafe.Pointer(confs.val))
for i := 0; i < int(confs.length); i++ {
confidences = append(confidences, int(aConfs[i]))
}
return
}
// RegisterFace registers face information into the internal database.
func (f *FaceRecognizer) RegisterFace(img gocv.Mat, face Face, personID int, saveToFile bool) int64 {
return int64(C.FaceRecognizer_RegisterFace((C.FaceRecognizer)(f.p), C.Mat(img.Ptr()), C.Face(face.Ptr()),
C.int(personID), C.bool(saveToFile)))
}
// DeregisterFace deregisters the previously registered face from the internal database.
func (f *FaceRecognizer) DeregisterFace(faceID int64) {
C.FaceRecognizer_DeregisterFace((C.FaceRecognizer)(f.p), C.int64_t(faceID))
}
// DeregisterPerson deregisters the previously registered person from the internal database.
func (f *FaceRecognizer) DeregisterPerson(personID int) {
C.FaceRecognizer_DeregisterPerson((C.FaceRecognizer)(f.p), C.int(personID))
}
// LoadFaceRecognizer loads data from file and returns a FaceRecognizer.
func LoadFaceRecognizer(name string) FaceRecognizer {
cName := C.CString(name)
defer C.free(unsafe.Pointer(cName))
return FaceRecognizer{p: unsafe.Pointer(C.FaceRecognizer_Load(cName))}
}
// Save FaceRecognizer data to file.
func (f *FaceRecognizer) Save(name string) {
cName := C.CString(name)
defer C.free(unsafe.Pointer(cName))
C.FaceRecognizer_Save((C.FaceRecognizer)(f.p), cName)
}