1.首先需要导入TensorFlow Lite和OpenCV for Android库
2.在layout中创建一个SurfaceView元素来呈现检测结果。
3.使用OpenCV加载图像,并将其传递到TensorFlow Lite分类器进行物体检测。检测完成后,将检测结果绘制到SurfaceView上。
代码示例:
public class MainActivity extends AppCompatActivity implements CameraBridgeViewBase.CvCameraViewListener2 {
private JavaCameraView javaCameraView;
private Mat mRGBA;
private Mat mHSV;
private Mat mIntermediate;
private Mat circles;
private Mat hierarchy;
private Scalar CONTOUR_COLOR;
private int iLineThickness = 5;
private int iMinTrackingBallSize = 30;
private int iMaxTrackingBallSize = 100;
private Bitmap mBitmap;
private TensorFlowImageClassifier mTensorFlowClassifier;
private static final String MODEL_FILE = "detect.tflite";
private static final String LABEL_FILE = "file:///android_asset/labelmap.txt";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
javaCameraView = (JavaCameraView) findViewById(R.id.camView);
javaCameraView.setVisibility(SurfaceView.VISIBLE);
javaCameraView.setCvCameraViewListener(this);
mTensorFlowClassifier = new TensorFlowImageClassifier();
mTensorFlowClassifier.initializeTensorFlow(
getAssets(),
MODEL_FILE,
LABEL_FILE,
224,
224,
3,
0
);
}
@Override
public void onCameraViewStarted(int width, int height) {
mRGBA = new Mat();
mHSV = new Mat();
mIntermediate = new Mat();
circles = new Mat();
hierarchy = new Mat();
}
@Override
public void onCameraViewStopped() {
mRGBA.release();
mIntermediate.release();
mHSV.release();
circles.release();
hierarchy.release();
}
@Override
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
mRGBA = inputFrame.rgba();
Imgproc.cvtColor(mRGBA, mHSV,