LandmarkRecognitionActivity.java

package com.google.firebase.example.mlkit;

import android.graphics.Rect;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;

import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.ml.vision.FirebaseVision;
import com.google.firebase.ml.vision.cloud.FirebaseVisionCloudDetectorOptions;
import com.google.firebase.ml.vision.cloud.landmark.FirebaseVisionCloudLandmark;
import com.google.firebase.ml.vision.cloud.landmark.FirebaseVisionCloudLandmarkDetector;
import com.google.firebase.ml.vision.common.FirebaseVisionImage;
import com.google.firebase.ml.vision.common.FirebaseVisionLatLng;

import java.util.List;

public class LandmarkRecognitionActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }


    private void recognizeLandmarksCloud(FirebaseVisionImage image) {
        // [START set_detector_options_cloud]
        FirebaseVisionCloudDetectorOptions options = new FirebaseVisionCloudDetectorOptions.Builder()
                .setModelType(FirebaseVisionCloudDetectorOptions.LATEST_MODEL)
                .setMaxResults(30)
                .build();
        // [END set_detector_options_cloud]

        // [START get_detector_cloud]
        FirebaseVisionCloudLandmarkDetector detector = FirebaseVision.getInstance()
                .getVisionCloudLandmarkDetector();
        // Or, to change the default settings:
        // FirebaseVisionCloudLandmarkDetector detector = FirebaseVision.getInstance()
        //         .getVisionCloudLandmarkDetector(options);
        // [END get_detector_cloud]

        // [START fml_run_detector_cloud]
        Task<List<FirebaseVisionCloudLandmark>> result = detector.detectInImage(image)
                .addOnSuccessListener(new OnSuccessListener<List<FirebaseVisionCloudLandmark>>() {
                    @Override
                    public void onSuccess(List<FirebaseVisionCloudLandmark> firebaseVisionCloudLandmarks) {
                        // Task completed successfully
                        // [START_EXCLUDE]
                        // [START get_landmarks_cloud]
                        for (FirebaseVisionCloudLandmark landmark: firebaseVisionCloudLandmarks) {

                            Rect bounds = landmark.getBoundingBox();
                            String landmarkName = landmark.getLandmark();
                            String entityId = landmark.getEntityId();
                            float confidence = landmark.getConfidence();

                            // Multiple locations are possible, e.g., the location of the depicted
                            // landmark and the location the picture was taken.
                            for (FirebaseVisionLatLng loc: landmark.getLocations()) {
                                double latitude = loc.getLatitude();
                                double longitude = loc.getLongitude();
                            }
                        }
                        // [END get_landmarks_cloud]
                        // [END_EXCLUDE]
                    }
                })
                .addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        // Task failed with an exception
                        // ...
                    }
                });
        // [END fml_run_detector_cloud]
    }
}