是否可以同时使用Firebase ML Kit文本识别和条形码扫描仪？

Question

I already make the app for Text Recognition and Barcode Scanner separately. But is it possible if i want to use Text Recognition and Barcode Scanner at the same time at Live Stream?

I confused after i read this code

mCameraSource.setMachineLearningFrameProcessor(barcodeScanningProcessor);

Is that indicate that only one camerasource per one MachineLearning?

Answer 1

Yes it is, however the sample code you are using is tailored for using one frame processor at a time.

One way to achieve what you are looking for is to process each frame individually, which would allow you to pass it to multiple APIs.

CameraView is one package that allows frame processing. You may want to throttle and only take one out of every X frames, since processing a frame is computationally intensive.

cameraView.addFrameProcessor(new FrameProcessor() {
   @Override
   @WorkerThread
   public void process(Frame frame) {
       byte[] data = frame.getData();
       int rotation = frame.getRotation();
       long time = frame.getTime();
       Size size = frame.getSize();
       int format = frame.getFormat();

       // Process frame
       // This is where you'd pass the image to the Text recognition API
       // and then to the Barcode scanning API.

   }
}

You'd process each frame as described in the documentation for text recognition , and similarly for barcode scanning .