feat(example): 添加人脸注册按钮和ID显示功能
- 添加注册按钮，点击生成随机人脸ID（格式：F + 8位数字） - 实时显示检测到的人脸对应的ID - 使用彩色标签区分已注册（绿色）和未注册（橙色）状态 Quick task: 260330-ld1
This commit is contained in:
748
example/lib/main.dart
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748
example/lib/main.dart
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@@ -0,0 +1,748 @@
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import 'package:flutter/material.dart';
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import 'dart:async';
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import 'dart:math';
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import 'package:flutter/services.dart';
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import 'package:arc/arc.dart';
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import 'package:camera/camera.dart';
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void main() {
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runApp(const MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: HomePage(),
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debugShowCheckedModeBanner: false,
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);
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}
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}
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class HomePage extends StatefulWidget {
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const HomePage({super.key});
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@override
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State<HomePage> createState() => _HomePageState();
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}
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class _HomePageState extends State<HomePage> {
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String _platformVersion = 'Unknown';
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String _activeResult = '未激活';
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String _initResult = '未初始化';
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bool _isActivated = false;
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bool _isInitialized = false;
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final _arcPlugin = Arc();
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/// 虹软 SDK 配置信息（请替换为您自己的 AppId、SdkKey 和 ActiveKey）
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final String _appId = '4nPFuS2TYAQh9werHL2qbKjtTH9nnoixk7G6yqSUyjVH';
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final String _sdkKey = 'aWMTT3coxNQFETg9f3BGHCiBznAApXmcHFF3J5yQbsZ';
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final String _activeKey = 'NEAT7AU4KLCEK682';
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@override
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void initState() {
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super.initState();
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initPlatformState();
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}
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/// 获取平台版本
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Future<void> initPlatformState() async {
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String platformVersion;
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try {
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platformVersion =
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await _arcPlugin.getPlatformVersion() ?? 'Unknown platform version';
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} on PlatformException {
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platformVersion = 'Failed to get platform version.';
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}
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if (!mounted) return;
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setState(() {
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_platformVersion = platformVersion;
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});
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}
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/// 激活 SDK
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Future<void> _activeSDK() async {
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setState(() {
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_activeResult = '正在激活...';
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});
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try {
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final result = await _arcPlugin.activeOnline(
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appId: _appId,
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sdkKey: _sdkKey,
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activeKey: _activeKey,
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);
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if (result != null) {
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final success = result['success'] as bool? ?? false;
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final errorCode = result['errorCode'] as int? ?? -1;
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final message = result['message'] as String? ?? '未知错误';
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setState(() {
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_isActivated = success;
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_activeResult = success
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? '激活成功！\n错误码: $errorCode\n$message'
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: '激活失败！\n错误码: $errorCode\n$message';
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});
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}
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} on PlatformException catch (e) {
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setState(() {
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_activeResult = '激活异常: ${e.message}';
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});
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}
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}
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/// 初始化引擎
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Future<void> _initEngine() async {
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if (!_isActivated) {
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setState(() {
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_initResult = '请先激活 SDK';
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});
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return;
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}
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setState(() {
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_initResult = '正在初始化...';
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});
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try {
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// 功能掩码组合：
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// ASF_FACE_DETECT = 0x00000001 (人脸检测)
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// ASF_FACE_RECOGNITION = 0x00000004 (人脸识别)
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// ASF_AGE = 0x00000008 (年龄检测)
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// ASF_GENDER = 0x00000010 (性别检测)
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// ASF_LIVENESS = 0x00000080 (RGB 活体检测)
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// 组合掩码 = 0x01 | 0x04 | 0x08 | 0x10 | 0x80 = 0x9D
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final result = await _arcPlugin.init(
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detectMode: 0, // 0=VIDEO 模式, 1=IMAGE 模式
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orient: 0, // 检测角度优先级
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maxFaceNum: 10, // 最大检测人脸数
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combinedMask: 0x9D, // 功能组合掩码（人脸检测+识别+年龄+性别+RGB活体）
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);
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if (result != null) {
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final success = result['success'] as bool? ?? false;
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final errorCode = result['errorCode'] as int? ?? -1;
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final message = result['message'] as String? ?? '未知错误';
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setState(() {
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_isInitialized = success;
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_initResult = success
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? '初始化成功！\n错误码: $errorCode\n$message'
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: '初始化失败！\n错误码: $errorCode\n$message';
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});
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}
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} on PlatformException catch (e) {
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setState(() {
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_initResult = '初始化异常: ${e.message}';
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});
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}
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}
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/// 跳转到摄像头预览页面
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void _navigateToCameraPreview() async {
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try {
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final cameras = await availableCameras();
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if (!mounted) return;
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (context) => CameraPreviewScreen(
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arcPlugin: _arcPlugin,
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cameras: cameras,
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),
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),
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);
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('无法打开摄像头: $e')),
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);
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('虹软人脸识别 SDK 示例'),
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backgroundColor: Colors.blue,
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foregroundColor: Colors.white,
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),
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body: SingleChildScrollView(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// 平台信息
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Card(
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child: Padding(
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padding: const EdgeInsets.all(12.0),
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child: Text(
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'运行平台: $_platformVersion',
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style: const TextStyle(fontSize: 14),
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),
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),
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),
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const SizedBox(height: 16),
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// 激活 SDK 按钮
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ElevatedButton(
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onPressed: _isActivated ? null : _activeSDK,
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style: ElevatedButton.styleFrom(
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backgroundColor: _isActivated ? Colors.grey : Colors.blue,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(vertical: 12),
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),
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child: Text(
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_isActivated ? '已激活' : '激活 SDK',
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style: const TextStyle(fontSize: 16),
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),
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),
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const SizedBox(height: 8),
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Card(
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color: _isActivated ? Colors.green[50] : Colors.red[50],
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child: Padding(
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padding: const EdgeInsets.all(12.0),
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child: Text(
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_activeResult,
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style: TextStyle(
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fontSize: 13,
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color: _isActivated ? Colors.green[800] : Colors.red[800],
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),
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),
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),
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),
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const SizedBox(height: 24),
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// 初始化引擎按钮
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ElevatedButton(
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onPressed: _isInitialized ? null : _initEngine,
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style: ElevatedButton.styleFrom(
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backgroundColor: _isInitialized ? Colors.grey : Colors.green,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(vertical: 12),
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),
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child: Text(
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_isInitialized ? '已初始化' : '初始化引擎',
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style: const TextStyle(fontSize: 16),
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),
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),
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const SizedBox(height: 8),
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Card(
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color: _isInitialized ? Colors.green[50] : Colors.red[50],
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child: Padding(
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padding: const EdgeInsets.all(12.0),
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child: Text(
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_initResult,
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style: TextStyle(
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fontSize: 13,
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color: _isInitialized ? Colors.green[800] : Colors.red[800],
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),
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),
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),
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),
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const SizedBox(height: 24),
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// 摄像头预览按钮
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ElevatedButton(
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onPressed: _isInitialized ? _navigateToCameraPreview : null,
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style: ElevatedButton.styleFrom(
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backgroundColor: _isInitialized ? Colors.purple : Colors.grey,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(vertical: 12),
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),
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child: const Text(
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'打开摄像头预览',
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style: TextStyle(fontSize: 16),
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),
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),
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const SizedBox(height: 24),
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// 使用说明
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const Card(
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child: Padding(
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padding: EdgeInsets.all(12.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'使用说明:',
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style: TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.bold,
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),
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),
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SizedBox(height: 8),
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Text(
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'1. 请先替换代码中的 _appId、_sdkKey 和 _activeKey 为您的真实密钥\n'
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'2. 点击"激活 SDK"按钮进行在线激活\n'
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'3. 激活成功后点击"初始化引擎"按钮\n'
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'4. 初始化成功后点击"打开摄像头预览"进行人脸检测',
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style: TextStyle(fontSize: 12),
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),
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],
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),
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),
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),
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],
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),
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),
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);
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}
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}
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/// 摄像头预览页面，用于实时人脸检测和 RGB 活体检测
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class CameraPreviewScreen extends StatefulWidget {
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final Arc arcPlugin;
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final List<CameraDescription> cameras;
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const CameraPreviewScreen({
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super.key,
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required this.arcPlugin,
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required this.cameras,
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});
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@override
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State<CameraPreviewScreen> createState() => _CameraPreviewScreenState();
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}
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class _CameraPreviewScreenState extends State<CameraPreviewScreen> {
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CameraController? _cameraController;
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bool _isDetecting = false;
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int _faceCount = 0;
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String _lastDetectionTime = '';
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String _statusMessage = '正在初始化摄像头...';
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// RGB 活体检测相关状态
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int _rgbLivenessResult = -1; // -1=未检测, 0=非真人, 1=真人
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String _rgbLivenessStatus = '未检测';
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// 人脸ID管理
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/// 存储人脸特征到ID的映射（使用人脸矩形区域的hashCode作为特征标识）
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final Map<String, String> _faceIdMap = {};
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/// 当前帧检测到的人脸ID列表
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List<String> _currentFaceIds = [];
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/// 随机数生成器
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final Random _random = Random();
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@override
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void initState() {
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super.initState();
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_initCamera();
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}
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/// 初始化摄像头
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Future<void> _initCamera() async {
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if (widget.cameras.isEmpty) {
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debugPrint('没有可用的摄像头');
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setState(() {
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_statusMessage = '没有可用的摄像头';
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});
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return;
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}
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// 打印所有摄像头信息
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debugPrint('========== 摄像头列表 ==========');
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for (int i = 0; i < widget.cameras.length; i++) {
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final camera = widget.cameras[i];
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debugPrint('摄像头 $i:');
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debugPrint(' - name: ${camera.name}');
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debugPrint(' - lensDirection: ${camera.lensDirection}');
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debugPrint(' - sensorOrientation: ${camera.sensorOrientation}');
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}
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debugPrint('================================');
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// 选择后置摄像头作为默认摄像头
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CameraDescription? selectedCamera;
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for (var camera in widget.cameras) {
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if (camera.lensDirection == CameraLensDirection.back) {
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selectedCamera = camera;
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break;
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}
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}
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selectedCamera ??= widget.cameras.first;
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debugPrint('选择摄像头: ${selectedCamera.name}');
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_cameraController = CameraController(
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selectedCamera,
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ResolutionPreset.medium,
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enableAudio: false,
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imageFormatGroup: ImageFormatGroup.nv21,
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);
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try {
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await _cameraController!.initialize();
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debugPrint('摄像头初始化成功');
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final size = _cameraController!.value.previewSize;
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debugPrint('预览尺寸: ${size?.width}x${size?.height}');
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if (mounted) {
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setState(() {
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_statusMessage = '摄像头: ${selectedCamera?.name ?? "未知"}';
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});
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_startImageStream();
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}
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} catch (e) {
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debugPrint('摄像头初始化失败: $e');
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if (mounted) {
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setState(() {
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_statusMessage = '摄像头初始化失败: $e';
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});
|
||||
}
|
||||
}
|
||||
}
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/// 启动图像流
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void _startImageStream() {
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||||
_cameraController?.startImageStream(_onImageAvailable);
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debugPrint('已启动图像流');
|
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}
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/// 图像帧回调，进行人脸检测
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void _onImageAvailable(CameraImage image) async {
|
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if (_isDetecting) return;
|
||||
_isDetecting = true;
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||||
|
||||
try {
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||||
final int width = image.width;
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||||
final int height = image.height;
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||||
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||||
// 将图像数据转换为连续的 NV21 格式
|
||||
final nv21Data = _extractNV21(image, width, height);
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||||
|
||||
// 人脸检测（同时进行 RGB 活体检测）
|
||||
final detectResult = await widget.arcPlugin.detectFaces(
|
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data: nv21Data,
|
||||
width: width,
|
||||
height: height,
|
||||
format: 2050, // NV21 格式
|
||||
);
|
||||
|
||||
if (detectResult != null) {
|
||||
final success = detectResult['success'] == true;
|
||||
final faceList = detectResult['faceList'] as List? ?? [];
|
||||
|
||||
if (success && faceList.isNotEmpty) {
|
||||
final now = DateTime.now();
|
||||
final timeStr = '${now.hour.toString().padLeft(2, '0')}:'
|
||||
'${now.minute.toString().padLeft(2, '0')}:'
|
||||
'${now.second.toString().padLeft(2, '0')}.'
|
||||
'${now.millisecond.toString().padLeft(3, '0')}';
|
||||
|
||||
debugPrint('========== 人脸检测 [$timeStr] ==========');
|
||||
debugPrint('检测到 ${faceList.length} 张人脸');
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||||
|
||||
for (int i = 0; i < faceList.length; i++) {
|
||||
final face = faceList[i] as Map;
|
||||
debugPrint('人脸 ${i + 1}: (${face['rectLeft']}, ${face['rectTop']}, ${face['rectRight']}, ${face['rectBottom']})');
|
||||
}
|
||||
|
||||
// 获取 RGB 活体检测结果
|
||||
final rgbLiveness = detectResult['rgbLiveness'] as int? ?? -1;
|
||||
final rgbIsAlive = rgbLiveness == 1;
|
||||
|
||||
if (mounted) {
|
||||
setState(() {
|
||||
_faceCount = faceList.length;
|
||||
_lastDetectionTime = timeStr;
|
||||
_rgbLivenessResult = rgbLiveness;
|
||||
_rgbLivenessStatus = rgbIsAlive ? '真人' : (rgbLiveness == 0 ? '非真人' : '未知');
|
||||
// 更新当前人脸ID列表
|
||||
_currentFaceIds = faceList.map((face) {
|
||||
final faceKey = _getFaceKey(face as Map);
|
||||
return _faceIdMap[faceKey] ?? '未注册';
|
||||
}).toList();
|
||||
});
|
||||
}
|
||||
debugPrint('RGB 活体: liveness=$rgbLiveness, isAlive=$rgbIsAlive');
|
||||
debugPrint('========================================');
|
||||
} else {
|
||||
// 未检测到人脸时重置状态
|
||||
if (mounted) {
|
||||
setState(() {
|
||||
_faceCount = 0;
|
||||
_rgbLivenessResult = -1;
|
||||
_rgbLivenessStatus = '未检测';
|
||||
_currentFaceIds = [];
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
} catch (e, stackTrace) {
|
||||
debugPrint('人脸检测异常: $e');
|
||||
debugPrint('堆栈: $stackTrace');
|
||||
} finally {
|
||||
_isDetecting = false;
|
||||
}
|
||||
}
|
||||
|
||||
/// 提取 NV21 数据（处理 stride 对齐）
|
||||
Uint8List _extractNV21(CameraImage image, int width, int height) {
|
||||
final ySize = width * height;
|
||||
final nv21Size = ySize * 3 ~/ 2;
|
||||
|
||||
if (image.planes.length == 1) {
|
||||
final plane = image.planes[0];
|
||||
final bytesPerRow = plane.bytesPerRow;
|
||||
|
||||
if (bytesPerRow == width) {
|
||||
return plane.bytes;
|
||||
}
|
||||
|
||||
final nv21 = Uint8List(nv21Size);
|
||||
|
||||
for (int row = 0; row < height; row++) {
|
||||
final srcOffset = row * bytesPerRow;
|
||||
final dstOffset = row * width;
|
||||
nv21.setRange(dstOffset, dstOffset + width, plane.bytes, srcOffset);
|
||||
}
|
||||
|
||||
final uvHeight = height ~/ 2;
|
||||
for (int row = 0; row < uvHeight; row++) {
|
||||
final srcOffset = (height + row) * bytesPerRow;
|
||||
final dstOffset = ySize + row * width;
|
||||
nv21.setRange(dstOffset, dstOffset + width, plane.bytes, srcOffset);
|
||||
}
|
||||
|
||||
return nv21;
|
||||
}
|
||||
|
||||
final yPlane = image.planes[0];
|
||||
final yStride = yPlane.bytesPerRow;
|
||||
|
||||
final nv21 = Uint8List(nv21Size);
|
||||
|
||||
for (int row = 0; row < height; row++) {
|
||||
final srcOffset = row * yStride;
|
||||
final dstOffset = row * width;
|
||||
nv21.setRange(dstOffset, dstOffset + width, yPlane.bytes, srcOffset);
|
||||
}
|
||||
|
||||
if (image.planes.length >= 2) {
|
||||
final uvPlane = image.planes[1];
|
||||
final uvStride = uvPlane.bytesPerRow;
|
||||
final uvHeight = height ~/ 2;
|
||||
|
||||
for (int row = 0; row < uvHeight; row++) {
|
||||
final srcOffset = row * uvStride;
|
||||
final dstOffset = ySize + row * width;
|
||||
nv21.setRange(dstOffset, dstOffset + width, uvPlane.bytes, srcOffset);
|
||||
}
|
||||
}
|
||||
|
||||
return nv21;
|
||||
}
|
||||
|
||||
/// 生成随机人脸ID
|
||||
/// 生成格式: F + 8位随机数字
|
||||
String _generateRandomFaceId() {
|
||||
final id = _random.nextInt(100000000).toString().padLeft(8, '0');
|
||||
return 'F$id';
|
||||
}
|
||||
|
||||
/// 根据人脸矩形区域生成特征标识
|
||||
String _getFaceKey(Map face) {
|
||||
// 使用人脸矩形区域的位置和大小作为特征标识
|
||||
final rectLeft = face['rectLeft'] as int? ?? 0;
|
||||
final rectTop = face['rectTop'] as int? ?? 0;
|
||||
final rectRight = face['rectRight'] as int? ?? 0;
|
||||
final rectBottom = face['rectBottom'] as int? ?? 0;
|
||||
// 使用位置和大小计算一个简单的特征值（允许一定容差）
|
||||
final centerX = (rectLeft + rectRight) ~/ 2;
|
||||
final centerY = (rectTop + rectBottom) ~/ 2;
|
||||
// 按照区块划分（每50像素为一个区块）
|
||||
final blockX = centerX ~/ 50;
|
||||
final blockY = centerY ~/ 50;
|
||||
return '$blockX-$blockY';
|
||||
}
|
||||
|
||||
@override
|
||||
void dispose() {
|
||||
_cameraController?.stopImageStream();
|
||||
_cameraController?.dispose();
|
||||
super.dispose();
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Scaffold(
|
||||
appBar: AppBar(
|
||||
title: const Text('人脸检测预览'),
|
||||
backgroundColor: Colors.purple,
|
||||
foregroundColor: Colors.white,
|
||||
),
|
||||
body: Column(
|
||||
children: [
|
||||
// 摄像头预览
|
||||
Expanded(
|
||||
child: _cameraController != null &&
|
||||
_cameraController!.value.isInitialized
|
||||
? Center(
|
||||
child: RotatedBox(
|
||||
quarterTurns: -1,
|
||||
child: CameraPreview(_cameraController!),
|
||||
),
|
||||
)
|
||||
: Center(
|
||||
child: Column(
|
||||
mainAxisAlignment: MainAxisAlignment.center,
|
||||
children: [
|
||||
const CircularProgressIndicator(),
|
||||
const SizedBox(height: 16),
|
||||
Text(_statusMessage),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
|
||||
// 检测信息显示
|
||||
Container(
|
||||
width: double.infinity,
|
||||
padding: const EdgeInsets.all(16),
|
||||
color: Colors.black87,
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
Text(
|
||||
'检测到人脸数: $_faceCount',
|
||||
style: const TextStyle(
|
||||
color: Colors.white,
|
||||
fontSize: 18,
|
||||
fontWeight: FontWeight.bold,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 4),
|
||||
Text(
|
||||
'最后检测时间: $_lastDetectionTime',
|
||||
style: const TextStyle(
|
||||
color: Colors.white70,
|
||||
fontSize: 14,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 8),
|
||||
// RGB 活体检测状态
|
||||
Row(
|
||||
children: [
|
||||
Icon(
|
||||
_rgbLivenessResult == 1
|
||||
? Icons.check_circle
|
||||
: _rgbLivenessResult == 0
|
||||
? Icons.cancel
|
||||
: Icons.help_outline,
|
||||
color: _rgbLivenessResult == 1
|
||||
? Colors.green
|
||||
: _rgbLivenessResult == 0
|
||||
? Colors.red
|
||||
: Colors.orange,
|
||||
size: 20,
|
||||
),
|
||||
const SizedBox(width: 8),
|
||||
Text(
|
||||
'RGB活体: $_rgbLivenessStatus',
|
||||
style: TextStyle(
|
||||
color: _rgbLivenessResult == 1
|
||||
? Colors.green
|
||||
: _rgbLivenessResult == 0
|
||||
? Colors.red
|
||||
: Colors.white70,
|
||||
fontSize: 14,
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
// 人脸ID显示
|
||||
if (_currentFaceIds.isNotEmpty) ...[
|
||||
const SizedBox(height: 8),
|
||||
const Divider(color: Colors.white24),
|
||||
const SizedBox(height: 8),
|
||||
Text(
|
||||
'人脸ID:',
|
||||
style: const TextStyle(
|
||||
color: Colors.white,
|
||||
fontSize: 14,
|
||||
fontWeight: FontWeight.bold,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 4),
|
||||
Wrap(
|
||||
spacing: 8,
|
||||
runSpacing: 4,
|
||||
children: _currentFaceIds.asMap().entries.map((entry) {
|
||||
final index = entry.key;
|
||||
final id = entry.value;
|
||||
final isRegistered = id != '未注册';
|
||||
return Container(
|
||||
padding: const EdgeInsets.symmetric(
|
||||
horizontal: 8,
|
||||
vertical: 4,
|
||||
),
|
||||
decoration: BoxDecoration(
|
||||
color: isRegistered ? Colors.green.withValues(alpha: 0.3) : Colors.orange.withValues(alpha: 0.3),
|
||||
borderRadius: BorderRadius.circular(4),
|
||||
border: Border.all(
|
||||
color: isRegistered ? Colors.green : Colors.orange,
|
||||
),
|
||||
),
|
||||
child: Text(
|
||||
'人脸${index + 1}: $id',
|
||||
style: TextStyle(
|
||||
color: isRegistered ? Colors.greenAccent : Colors.orangeAccent,
|
||||
fontSize: 12,
|
||||
),
|
||||
),
|
||||
);
|
||||
}).toList(),
|
||||
),
|
||||
],
|
||||
// 注册按钮
|
||||
if (_faceCount > 0) ...[
|
||||
const SizedBox(height: 12),
|
||||
SizedBox(
|
||||
width: double.infinity,
|
||||
child: ElevatedButton.icon(
|
||||
onPressed: () {
|
||||
// 为未注册的人脸生成随机ID
|
||||
setState(() {
|
||||
for (int i = 0; i < _faceCount; i++) {
|
||||
if (_currentFaceIds[i] == '未注册') {
|
||||
_currentFaceIds[i] = _generateRandomFaceId();
|
||||
}
|
||||
}
|
||||
});
|
||||
ScaffoldMessenger.of(context).showSnackBar(
|
||||
const SnackBar(
|
||||
content: Text('人脸ID已生成！'),
|
||||
backgroundColor: Colors.green,
|
||||
),
|
||||
);
|
||||
},
|
||||
icon: const Icon(Icons.person_add),
|
||||
label: const Text('注册人脸（生成随机ID）'),
|
||||
style: ElevatedButton.styleFrom(
|
||||
backgroundColor: Colors.blue,
|
||||
foregroundColor: Colors.white,
|
||||
padding: const EdgeInsets.symmetric(vertical: 12),
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
],
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user