我已经将MLkit FaceDetection集成到我的Android应用程序中。我参考了以下URL:
https://firebase.google.com/docs/ml-kit/android/detect-faces
人脸检测处理器类的代码是
import java.io.IOException;
import java.util.List;
/** Face Detector Demo. */
public class FaceDetectionProcessor extends VisionProcessorBase<List<FirebaseVisionFace>> {
private static final String TAG = "FaceDetectionProcessor";
private final FirebaseVisionFaceDetector detector;
public FaceDetectionProcessor() {
FirebaseVisionFaceDetectorOptions options =
new FirebaseVisionFaceDetectorOptions.Builder()
.setClassificationType(FirebaseVisionFaceDetectorOptions.ALL_CLASSIFICATIONS)
.setLandmarkType(FirebaseVisionFaceDetectorOptions.ALL_LANDMARKS)
.setTrackingEnabled(true)
.build();
detector = FirebaseVision.getInstance().getVisionFaceDetector(options);
}
@Override
public void stop() {
try {
detector.close();
} catch (IOException e) {
Log.e(TAG, "Exception thrown while trying to close Face Detector: " + e);
}
}
@Override
protected Task<List<FirebaseVisionFace>> detectInImage(FirebaseVisionImage image) {
return detector.detectInImage(image);
}
@Override
protected void onSuccess(
@NonNull List<FirebaseVisionFace> faces,
@NonNull FrameMetadata frameMetadata,
@NonNull GraphicOverlay graphicOverlay) {
graphicOverlay.clear();
for (int i = 0; i < faces.size(); ++i) {
FirebaseVisionFace face = faces.get(i);
FaceGraphic faceGraphic = new FaceGraphic(graphicOverlay);
graphicOverlay.add(faceGraphic);
faceGraphic.updateFace(face, frameMetadata.getCameraFacing());
}
}
@Override
protected void onFailure(@NonNull Exception e) {
Log.e(TAG, "Face detection failed " + e);
}
}
在“onSuccess”监听器中,我们将获得“FirebaseVisionFace”类对象的数组,其中将包含面部的“边界框”。
@Override
protected void onSuccess(
@NonNull List<FirebaseVisionFace> faces,
@NonNull FrameMetadata frameMetadata,
@NonNull GraphicOverlay graphicOverlay) {
graphicOverlay.clear();
for (int i = 0; i < faces.size(); ++i) {
FirebaseVisionFace face = faces.get(i);
FaceGraphic faceGraphic = new FaceGraphic(graphicOverlay);
graphicOverlay.add(faceGraphic);
faceGraphic.updateFace(face, frameMetadata.getCameraFacing());
}
}
我想知道如何将FirebaseVisionFace对象转换为位图。我想提取面部图像并在ImageView中显示它。可以有人帮忙吗?先谢谢了。
注意:我已经从以下网址下载了MLKit android的示例源代码。
https://github.com/firebase/quickstart-android/tree/master/mlkit