Android开发基于ArcSoft实现人脸识别的方法是什么

本篇内容主要讲解"Android开发基于ArcSoft实现人脸识别的方法是什么"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"Android开发基于ArcSoft实现人脸识别的方法是什么"吧!

效果图

激活引擎

第一步配置APP_ID和SDK_KEY

 int activeCode = FaceEngine.activeOnline( ChooseFunctionActivity.this, Param.APP_ID, Param.SDK_KEY);

 public static final String APP_ID = "AwY6okHQHxtM92YRYSEqJQwb8cED5huPvYyMhK1w7BSo";   public static final String SDK_KEY = "AF8SaLYtP3ALsmaTR55y9UXaykBZjTtMt5gwCBkUGugh";

第二步：判断是否添加动态链接库（so文件与jar包）

 private boolean checkSoFile(String[] libraries) {        File dir = new File(getApplicationInfo().nativeLibraryDir);        File[] files = dir.listFiles();        if (files == null || files.length == 0) {            return false;        }        List libraryNameList = new ArrayList<>();        for (File file : files) {            libraryNameList.add(file.getName());        }        boolean exists = true;        for (String library : libraries) {            exists &= libraryNameList.contains(library);        }        return exists;    }

第三步：判断是否申明所有权限

protected boolean CheckPermissions(String[] neededPermissions) {        if (neededPermissions == null || neededPermissions.length == 0) {            return true;        }        boolean allGranted = true;        for (String neededPermission : neededPermissions) {            allGranted &= ContextCompat.checkSelfPermission(this, neededPermission) == PackageManager.PERMISSION_GRANTED;        }        return allGranted;    }

激活引擎代码如下

public void ActivationDevice(final View view) {        if (!libraryExists) {            ShowToast(getString(R.string.library_not_found));            return;        }        if (!CheckPermissions(NEEDED_PERMISSIONS)) {            ActivityCompat.requestPermissions(this, NEEDED_PERMISSIONS, ACTION_REQUEST_PERMISSIONS);            return;        }        if (view != null) {            view.setClickable(false);        }        Observable.create( new ObservableOnSubscribe() {            @Override            public void subscribe(ObservableEmitter emitter) {                RuntimeABI runtimeABI = FaceEngine.getRuntimeABI();                Log.i(TAG, "subscribe: getRuntimeABI() " + runtimeABI);                long start = System.currentTimeMillis();                int activeCode = FaceEngine.activeOnline( ChooseFunctionActivity.this, Param.APP_ID, Param.SDK_KEY);                Log.i(TAG, "subscribe cost: " + (System.currentTimeMillis() - start));                emitter.onNext(activeCode);            }        })                .subscribeOn( Schedulers.io())                .observeOn( AndroidSchedulers.mainThread())                .subscribe(new Observer() {                    @Override                    public void onSubscribe(Disposable d) {                    }                    @Override                    public void onNext(Integer activeCode) {                        if (activeCode == ErrorInfo.MOK) {                            ShowToast(getString(R.string.activation_succeeded));                        } else if (activeCode == ErrorInfo.MERR_ASF_ALREADY_ACTIVATED) {                            ShowToast(getString(R.string.already_activated));                        } else {                            ShowToast(getString(R.string.active_failed, activeCode));                        }                        if (view != null) {                            view.setClickable(true);                        }                        ActiveFileInfo activeFileInfo = new ActiveFileInfo();                        int res = FaceEngine.getActiveFileInfo(ChooseFunctionActivity.this, activeFileInfo);                        if (res == ErrorInfo.MOK) {                            Log.i(TAG, activeFileInfo.toString());                        }                    }                    @Override                    public void onError(Throwable e) {                        ShowToast(e.getMessage());                        if (view != null) {                            view.setClickable(true);                        }                    }                    @Override                    public void onComplete() {                    }                });    }

人脸比对 1：N

第一步：初始化本地人脸库

FaceServer.getInstance().init(this);

第二步：初始化引擎和相机

public void onGlobalLayout() {        previewView.getViewTreeObserver().removeOnGlobalLayoutListener(this);        if (!CheckPermissions(NEEDED_PERMISSIONS)) {            ActivityCompat.requestPermissions(this, NEEDED_PERMISSIONS, ACTION_REQUEST_PERMISSIONS);        } else {            initEngine();            initCamera();        }    }

第三步：初始化引擎

 private void initEngine() {        ftEngine = new FaceEngine();        ftInitCode = ftEngine.init(this, DetectMode.ASF_DETECT_MODE_VIDEO, ConfigUtil.getFtOrient(this),                16, MAX_DETECT_NUM, FaceEngine.ASF_FACE_DETECT);        frEngine = new FaceEngine();        frInitCode = frEngine.init(this, DetectMode.ASF_DETECT_MODE_IMAGE, DetectFaceOrientPriority.ASF_OP_0_ONLY,                16, MAX_DETECT_NUM, FaceEngine.ASF_FACE_RECOGNITION);        flEngine = new FaceEngine();        flInitCode = flEngine.init(this, DetectMode.ASF_DETECT_MODE_IMAGE, DetectFaceOrientPriority.ASF_OP_0_ONLY,                16, MAX_DETECT_NUM, FaceEngine.ASF_LIVENESS);        Log.i(TAG, "initEngine:  init: " + ftInitCode);        if (ftInitCode != ErrorInfo.MOK) {            String error = getString(R.string.specific_engine_init_failed, "ftEngine", ftInitCode);            Log.i(TAG, "initEngine: " + error);            ShowToast(error);        }        if (frInitCode != ErrorInfo.MOK) {            String error = getString(R.string.specific_engine_init_failed, "frEngine", frInitCode);            Log.i(TAG, "initEngine: " + error);            ShowToast(error);        }        if (flInitCode != ErrorInfo.MOK) {            String error = getString(R.string.specific_engine_init_failed, "flEngine", flInitCode);            Log.i(TAG, "initEngine: " + error);            ShowToast(error);        }    }

第四步：活体检测

private void initCamera() {        DisplayMetrics metrics = new DisplayMetrics();        getWindowManager().getDefaultDisplay().getMetrics(metrics);        final FaceListener faceListener = new FaceListener() {            @Override            public void onFail(Exception e) {                Log.e(TAG, "onFail: " + e.getMessage());            }            //请求FR的回调            @Override            public void onFaceFeatureInfoGet(@Nullable final FaceFeature faceFeature, final Integer requestId, final Integer errorCode) {                //FR成功                if (faceFeature != null) {//                    Log.i(TAG, "onPreview: fr end = " + System.currentTimeMillis() + " trackId = " + requestId);                    Integer liveness = livenessMap.get(requestId);                    //不做活体检测的情况，直接搜索                    if (!livenessDetect) {                        searchFace(faceFeature, requestId);                    }                    //活体检测通过，搜索特征                    else if (liveness != null && liveness == LivenessInfo.ALIVE) {                        searchFace(faceFeature, requestId);                    }                    //活体检测未出结果，或者非活体，延迟执行该函数                    else {                        if (requestFeatureStatusMap.containsKey(requestId)) {                            Observable.timer(WAIT_LIVENESS_INTERVAL, TimeUnit.MILLISECONDS)                                    .subscribe(new Observer() {                                        Disposable disposable;                                        @Override                                        public void onSubscribe(Disposable d) {                                            disposable = d;                                            getFeatureDelayedDisposables.add(disposable);                                        }                                        @Override                                        public void onNext(Long aLong) {                                            onFaceFeatureInfoGet(faceFeature, requestId, errorCode);                                        }                                        @Override                                        public void onError(Throwable e) {                                        }                                        @Override                                        public void onComplete() {                                            getFeatureDelayedDisposables.remove(disposable);                                        }                                    });                        }                    }                }                //特征提取失败                else {                    if (increaseAndGetValue(extractErrorRetryMap, requestId) > MAX_RETRY_TIME) {                        extractErrorRetryMap.put(requestId, 0);                        String msg;                        // 传入的FaceInfo在指定的图像上无法解析人脸，此处使用的是RGB人脸数据，一般是人脸模糊                        if (errorCode != null && errorCode == ErrorInfo.MERR_FSDK_FACEFEATURE_LOW_CONFIDENCE_LEVEL) {                            msg = getString(R.string.low_confidence_level);                        } else {                            msg = "ExtractCode:" + errorCode;                        }                        faceHelper.setName(requestId, getString(R.string.recognize_failed_notice, msg));                        // 在尝试最大次数后，特征提取仍然失败，则认为识别未通过                        requestFeatureStatusMap.put(requestId, RequestFeatureStatus.FAILED);                        retryRecognizeDelayed(requestId);                    } else {                        requestFeatureStatusMap.put(requestId, RequestFeatureStatus.TO_RETRY);                    }                }            }            @Override            public void onFaceLivenessInfoGet(@Nullable LivenessInfo livenessInfo, final Integer requestId, Integer errorCode) {                if (livenessInfo != null) {                    int liveness = livenessInfo.getLiveness();                    livenessMap.put(requestId, liveness);                    // 非活体，重试                    if (liveness == LivenessInfo.NOT_ALIVE) {                        faceHelper.setName(requestId, getString(R.string.recognize_failed_notice, "NOT_ALIVE"));                        // 延迟 FAIL_RETRY_INTERVAL 后，将该人脸状态置为UNKNOWN，帧回调处理时会重新进行活体检测                        retryLivenessDetectDelayed(requestId);                    }                } else {                    if (increaseAndGetValue(livenessErrorRetryMap, requestId) > MAX_RETRY_TIME) {                        livenessErrorRetryMap.put(requestId, 0);                        String msg;                        // 传入的FaceInfo在指定的图像上无法解析人脸，此处使用的是RGB人脸数据，一般是人脸模糊                        if (errorCode != null && errorCode == ErrorInfo.MERR_FSDK_FACEFEATURE_LOW_CONFIDENCE_LEVEL) {                            msg = getString(R.string.low_confidence_level);                        } else {                            msg = "ProcessCode:" + errorCode;                        }                        faceHelper.setName(requestId, getString(R.string.recognize_failed_notice, msg));                        retryLivenessDetectDelayed(requestId);                    } else {                        livenessMap.put(requestId, LivenessInfo.UNKNOWN);                    }                }            }        };        CameraListener cameraListener = new CameraListener() {            @Override            public void onCameraOpened(Camera camera, int cameraId, int displayOrientation, boolean isMirror) {                Camera.Size lastPreviewSize = previewSize;                previewSize = camera.getParameters().getPreviewSize();                drawHelper = new DrawHelper(previewSize.width, previewSize.height, previewView.getWidth(), previewView.getHeight(), displayOrientation                        , cameraId, isMirror, false, false);                Log.i(TAG, "onCameraOpened: " + drawHelper.toString());                // 切换相机的时候可能会导致预览尺寸发生变化                if (faceHelper == null ||                        lastPreviewSize == null ||                        lastPreviewSize.width != previewSize.width || lastPreviewSize.height != previewSize.height) {                    Integer trackedFaceCount = null;                    // 记录切换时的人脸序号                    if (faceHelper != null) {                        trackedFaceCount = faceHelper.getTrackedFaceCount();                        faceHelper.release();                    }                    faceHelper = new FaceHelper.Builder()                            .ftEngine(ftEngine)                            .frEngine(frEngine)                            .flEngine(flEngine)                            .frQueueSize(MAX_DETECT_NUM)                            .flQueueSize(MAX_DETECT_NUM)                            .previewSize(previewSize)                            .faceListener(faceListener)                            .trackedFaceCount(trackedFaceCount == null ? ConfigUtil.getTrackedFaceCount(FaceComparison_RGB.this.getApplicationContext()) : trackedFaceCount)                            .build();                }            }            @Override            public void onPreview(final byte[] nv21, Camera camera) {                if (faceRectView != null) {                    faceRectView.clearFaceInfo();                }                List facePreviewInfoList = faceHelper.onPreviewFrame(nv21);                if (facePreviewInfoList != null && faceRectView != null && drawHelper != null) {                    drawPreviewInfo(facePreviewInfoList);                }                registerFace(nv21, facePreviewInfoList);                clearLeftFace(facePreviewInfoList);                if (facePreviewInfoList != null && facePreviewInfoList.size() > 0 && previewSize != null) {                    for (int i = 0; i < facePreviewInfoList.size(); i++) {                        Integer status = requestFeatureStatusMap.get(facePreviewInfoList.get(i).getTrackId());                        /**                         * 在活体检测开启，在人脸识别状态不为成功或人脸活体状态不为处理中（ANALYZING）且不为处理完成（ALIVE、NOT_ALIVE）时重新进行活体检测                         */                        if (livenessDetect && (status == null || status != RequestFeatureStatus.SUCCEED)) {                            Integer liveness = livenessMap.get(facePreviewInfoList.get(i).getTrackId());                            if (liveness == null                                    || (liveness != LivenessInfo.ALIVE && liveness != LivenessInfo.NOT_ALIVE && liveness != RequestLivenessStatus.ANALYZING)) {                                livenessMap.put(facePreviewInfoList.get(i).getTrackId(), RequestLivenessStatus.ANALYZING);                                faceHelper.requestFaceLiveness(nv21, facePreviewInfoList.get(i).getFaceInfo(), previewSize.width, previewSize.height, FaceEngine.CP_PAF_NV21, facePreviewInfoList.get(i).getTrackId(), LivenessType.RGB);                            }                        }                        /**                         * 对于每个人脸，若状态为空或者为失败，则请求特征提取（可根据需要添加其他判断以限制特征提取次数），                         * 特征提取回传的人脸特征结果在{@link FaceListener#onFaceFeatureInfoGet(FaceFeature, Integer, Integer)}中回传                         */                        if (status == null                                || status == RequestFeatureStatus.TO_RETRY) {                            requestFeatureStatusMap.put(facePreviewInfoList.get(i).getTrackId(), RequestFeatureStatus.SEARCHING);                            faceHelper.requestFaceFeature(nv21, facePreviewInfoList.get(i).getFaceInfo(), previewSize.width, previewSize.height, FaceEngine.CP_PAF_NV21, facePreviewInfoList.get(i).getTrackId());//                            Log.i(TAG, "onPreview: fr start = " + System.currentTimeMillis() + " trackId = " + facePreviewInfoList.get(i).getTrackedFaceCount());                        }                    }                }            }            @Override            public void onCameraClosed() {                Log.i(TAG, "onCameraClosed: ");            }            @Override            public void onCameraError(Exception e) {                Log.i(TAG, "onCameraError: " + e.getMessage());            }            @Override            public void onCameraConfigurationChanged(int cameraID, int displayOrientation) {                if (drawHelper != null) {                    drawHelper.setCameraDisplayOrientation(displayOrientation);                }                Log.i(TAG, "onCameraConfigurationChanged: " + cameraID + "  " + displayOrientation);            }        };        cameraHelper = new CameraHelper.Builder()                .previewViewSize(new Point(previewView.getMeasuredWidth(), previewView.getMeasuredHeight()))                .rotation(getWindowManager().getDefaultDisplay().getRotation())                .specificCameraId(rgbCameraID != null ? rgbCameraID : Camera.CameraInfo.CAMERA_FACING_FRONT)                .isMirror(false)                .previewOn(previewView)                .cameraListener(cameraListener)                .build();        cameraHelper.init();        cameraHelper.start();    }

人脸注册

 private void registerFace(final byte[] nv21, final List facePreviewInfoList) {        if (registerStatus == REGISTER_STATUS_READY && facePreviewInfoList != null && facePreviewInfoList.size() > 0) {            registerStatus = REGISTER_STATUS_PROCESSING;            Observable.create( new ObservableOnSubscribe() {                @Override                public void subscribe(ObservableEmitter emitter) {                    boolean success = FaceServer.getInstance().registerNv21(FaceComparison_RGB.this, nv21.clone(), previewSize.width, previewSize.height,                            facePreviewInfoList.get(0).getFaceInfo(), "registered" + faceHelper.getTrackedFaceCount());                    emitter.onNext(success);                }            })                    .subscribeOn( Schedulers.computation())                    .observeOn( AndroidSchedulers.mainThread())                    .subscribe(new Observer() {                        @Override                        public void onSubscribe(Disposable d) {                        }                        /**判断是否注册成功*/                        @Override                        public void onNext(Boolean success) {                            //String result = success ? "register success!" : "register failed!";                            //ShowToast(result);//                            AlertDialog.Builder builder = new AlertDialog.Builder( FaceComparison_RGB.this );//                            AlertDialog dialog = builder.create();//                            View AlertDialog_View = View.inflate( FaceComparison_RGB.this,R.layout.register_result,null );//                            dialog.setView( AlertDialog_View );//                            dialog.show();                            ShowPopWindows(success);                            registerStatus = REGISTER_STATUS_DONE;                        }                        @Override                        public void onError(Throwable e) {                            e.printStackTrace();                            ShowToast("register failed!");                            ShowFailPopWindows();                            registerStatus = REGISTER_STATUS_DONE;                        }                        @Override                        public void onComplete() {                        }                    });        }    }

切换前置、后置摄像头

public void switchCamera(View view) {        if (cameraHelper != null) {            boolean success = cameraHelper.switchCamera();            if (!success) {                ShowToast(getString(R.string.switch_camera_failed));            } else {                ShowToast(getString(R.string.notice_change_detect_degree));            }        }    }

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