flutter_face_api 6.3.577-nightly flutter_face_api: ^6.3.577-nightly copied to clipboard
This is a flutter module for Regula Face SDK. It allows you to easily compaire faces using your phone's camera. Supports Android and iOS.
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'dart:async';
import 'package:flutter_face_api/flutter_face_api.dart';
import 'package:image_picker/image_picker.dart';
void main() => runApp(new MaterialApp(home: new MyApp()));
class _MyAppState extends State<MyApp> {
var faceSdk = FaceSDK.instance;
var _status = "nil";
var _similarityStatus = "nil";
var _livenessStatus = "nil";
var _uiImage1 = Image.asset('assets/images/portrait.png');
var _uiImage2 = Image.asset('assets/images/portrait.png');
set status(String val) => setState(() => _status = val);
set similarityStatus(String val) => setState(() => _similarityStatus = val);
set livenessStatus(String val) => setState(() => _livenessStatus = val);
set uiImage1(Image val) => setState(() => _uiImage1 = val);
set uiImage2(Image val) => setState(() => _uiImage2 = val);
MatchFacesImage? mfImage1;
MatchFacesImage? mfImage2;
void init() async {
super.initState();
if (!await initialize()) return;
status = "Ready";
}
startLiveness() async {
var result = await faceSdk.startLiveness(
config: LivenessConfig(skipStep: [LivenessSkipStep.ONBOARDING_STEP]),
notificationCompletion: (notification) {
print(notification.status);
},
);
if (result.image == null) return;
setImage(result.image!, ImageType.LIVE, 1);
livenessStatus = result.liveness.name.toLowerCase();
}
matchFaces() async {
if (mfImage1 == null || mfImage2 == null) {
status = "Both images required!";
return;
}
status = "Processing...";
var request = MatchFacesRequest([mfImage1!, mfImage2!]);
var response = await faceSdk.matchFaces(request);
var split = await faceSdk.splitComparedFaces(response.results, 0.75);
var match = split.matchedFaces;
similarityStatus = "failed";
if (match.isNotEmpty) {
similarityStatus = (match[0].similarity * 100).toStringAsFixed(2) + "%";
}
status = "Ready";
}
clearResults() {
status = "Ready";
similarityStatus = "nil";
livenessStatus = "nil";
uiImage2 = Image.asset('assets/images/portrait.png');
uiImage1 = Image.asset('assets/images/portrait.png');
mfImage1 = null;
mfImage2 = null;
}
// If 'assets/regula.license' exists, init using license(enables offline match)
// otherwise init without license.
Future<bool> initialize() async {
status = "Initializing...";
var license = await loadAssetIfExists("assets/regula.license");
InitConfig? config = null;
if (license != null) config = InitConfig(license);
var (success, error) = await faceSdk.initialize(config: config);
if (!success) {
status = error!.message;
print("${error.code}: ${error.message}");
}
return success;
}
Future<ByteData?> loadAssetIfExists(String path) async {
try {
return await rootBundle.load(path);
} catch (_) {
return null;
}
}
setImage(Uint8List bytes, ImageType type, int number) {
similarityStatus = "nil";
var mfImage = MatchFacesImage(bytes, type);
if (number == 1) {
mfImage1 = mfImage;
uiImage1 = Image.memory(bytes);
livenessStatus = "nil";
}
if (number == 2) {
mfImage2 = mfImage;
uiImage2 = Image.memory(bytes);
}
}
Widget useGallery(int number) {
return textButton("Use gallery", () async {
Navigator.pop(context);
var image = await ImagePicker().pickImage(source: ImageSource.gallery);
if (image != null) {
setImage(File(image.path).readAsBytesSync(), ImageType.PRINTED, number);
}
});
}
Widget useCamera(int number) {
return textButton("Use camera", () async {
Navigator.pop(context);
var response = await faceSdk.startFaceCapture();
var image = response.image;
if (image != null) setImage(image.image, image.imageType, number);
});
}
Widget image(Image image, Function() onTap) => GestureDetector(
onTap: onTap,
child: Image(height: 150, width: 150, image: image.image),
);
Widget button(String text, Function() onPressed) {
return Container(
child: textButton(text, onPressed,
style: ButtonStyle(
backgroundColor: WidgetStateProperty.all<Color>(Colors.black12),
)),
width: 250,
);
}
Widget text(String text) => Text(text, style: TextStyle(fontSize: 18));
Widget textButton(String text, Function() onPressed, {ButtonStyle? style}) =>
TextButton(
child: Text(text),
onPressed: onPressed,
style: style,
);
setImageDialog(BuildContext context, int number) => showDialog(
context: context,
builder: (BuildContext context) => AlertDialog(
title: Text("Select option"),
actions: [useGallery(number), useCamera(number)],
),
);
@override
Widget build(BuildContext bc) {
return Scaffold(
appBar: AppBar(title: Center(child: Text(_status))),
body: Container(
margin: EdgeInsets.fromLTRB(0, 0, 0, MediaQuery.of(bc).size.height / 8),
width: double.infinity,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
image(_uiImage1, () => setImageDialog(bc, 1)),
image(_uiImage2, () => setImageDialog(bc, 2)),
Container(margin: EdgeInsets.fromLTRB(0, 0, 0, 15)),
button("Match", () => matchFaces()),
button("Liveness", () => startLiveness()),
button("Clear", () => clearResults()),
Container(margin: EdgeInsets.fromLTRB(0, 15, 0, 0)),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
text("Similarity: " + _similarityStatus),
Container(margin: EdgeInsets.fromLTRB(20, 0, 0, 0)),
text("Liveness: " + _livenessStatus)
],
)
],
),
),
);
}
@override
void initState() {
super.initState();
init();
}
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}