Android的OpenCV的同时显示（前+后）摄像机应用

问题描述

我试图覆盖在相机背面preVIEW上方的前置摄像头preVIEW。我能够一起获得正面或背面的摄像头，但不是他们两个。

I'm trying to overlay the front camera preview on top of the back camera preview. I'm able to access either front or back camera, but not both of them together.

下面是我的code：

activity_main.xml中：

activity_main.xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:opencv="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_framelayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <org.opencv.android.JavaCameraView
        android:id="@+id/CameraViewBack"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone"
        opencv:camera_id="back"
        opencv:show_fps="true" />
    <!-- camera_id: "any", "back", "front" or by number value -->

    <org.opencv.android.JavaCameraView
        android:id="@+id/CameraViewFront"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:visibility="gone"
        opencv:camera_id="front"
        opencv:show_fps="true" />

</FrameLayout>

MainActivity.java：

MainActivity.java:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        setContentView(R.layout.activity_main);

        mFrameLayout = (FrameLayout) findViewById(R.id.main_framelayout);

        mOpenCvCameraViewBack = (CameraBridgeViewBase) findViewById(R.id.CameraViewBack);
        mOpenCvCameraViewBack.setVisibility(SurfaceView.VISIBLE);
        mOpenCvCameraViewBack.setCvCameraViewListener(this);

        mOpenCvCameraViewFront = (CameraBridgeViewBase) findViewById(R.id.CameraViewFront);
        mOpenCvCameraViewFront.setVisibility(SurfaceView.VISIBLE);
        mOpenCvCameraViewFront.setCvCameraViewListener(this);


    }

问题：我只看到在屏幕后面的摄像头视图。我要的是一个小窗口覆盖在此之上，所以我可以同时看到前置摄像头视图。

Problem: I only see the back camera view over the screen. What I want is a small window with the front camera view overlayed on top of this so I can see both.

我怎样才能做到这一点？谢谢你。

How can I do this? Thanks.

推荐答案

无法做到这一点。

CV ::为Android VideoCapture类实现不支持
  几款相机在同一时间。
  Android相机API不支持直流相机使用

的

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