检测到人脸时拍照

Question

我有以下代码，我想在检测到人脸时只自动拍摄一张照片。 我已经实现了自动拍照，但它需要很多照片而没有时间处理它们，因为它会不断检测人脸。我怎样才能让它每 x 分钟搜索一次以找到一张脸或每 x 分钟拍照一次？提前谢谢你。

FaceDetectionListener faceDetectionListener
= new FaceDetectionListener(){

    @Override
    public void onFaceDetection(Face[] faces, Camera camera) {

        if (faces.length == 0){
            prompt.setText(" No Face Detected! ");
        }else{
            //prompt.setText(String.valueOf(faces.length) + " Face Detected :) ");
              try{
                camera.takePicture(myShutterCallback,myPictureCallback_RAW, myPictureCallback_JPG);

               }
               catch(Exception e){

               }
        }


    }};

Answer 1

FaceDetectionListener faceDetectionListener
= new FaceDetectionListener(){

    private boolean processing = false;

    public void setProcessing(boolean processing) {
        this.processing = processing;
    }

    @Override
    public void onFaceDetection(Face[] faces, Camera camera) {
        if (processing) return;

        if (faces.length == 0){
            prompt.setText(" No Face Detected! ");
        }else{
            //prompt.setText(String.valueOf(faces.length) + " Face Detected :) ");
              try{
                   camera.takePicture(myShutterCallback,myPictureCallback_RAW, myPictureCallback_JPG);
                   processing = true;
               }
               catch(Exception e){

               }
        }


    }};

然后您可以在myShutterCallback 中进行任何您想要的处理，并致电faceDetectionListener.setProcessing(false) 拍摄另一张照片。这将保证一次只拍摄一张照片。