How to capture image from custom CameraView in Android?

try to use Surface View for creating dynamic camera view and set in your required portion.

following code try

variables set Class level (Global)

Button btn_capture;
Camera camera1;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
public static boolean previewing = false;

Following code in onCreate() method

getWindow().setFormat(PixelFormat.UNKNOWN);
    surfaceView = new SurfaceView(this);
    surfaceHolder = surfaceView.getHolder();
    surfaceHolder.addCallback(this);
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
btn_capture = (Button) findViewById(R.id.button1);

surfaceView.setBackgroundResource(R.drawable.your_background_image);

if(!previewing){

        camera1 = Camera.open();
        if (camera1 != null){
            try {
                camera1.setDisplayOrientation(90);
                camera1.setPreviewDisplay(surfaceHolder);
                camera1.startPreview();
                previewing = true;
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

btn_capture.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub

            if(camera != null)
            {
                camera1.takePicture(myShutterCallback, myPictureCallback_RAW, myPictureCallback_JPG);

            }
        }
    });

Following code put after onCreate() in your class.

ShutterCallback myShutterCallback = new ShutterCallback(){

    public void onShutter() {
        // TODO Auto-generated method stub
    }};

PictureCallback myPictureCallback_RAW = new PictureCallback(){

    public void onPictureTaken(byte[] arg0, Camera arg1) {
        // TODO Auto-generated method stub
    }};

PictureCallback myPictureCallback_JPG = new PictureCallback(){

    public void onPictureTaken(byte[] arg0, Camera arg1) {
        // TODO Auto-generated method stub
        Bitmap bitmapPicture = BitmapFactory.decodeByteArray(arg0, 0, arg0.length);

        Bitmap correctBmp = Bitmap.createBitmap(bitmapPicture, 0, 0, bitmapPicture.getWidth(), bitmapPicture.getHeight(), null, true);

    }};

public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
    // TODO Auto-generated method stub
    if(previewing){
        camera1.stopPreview();
        previewing = false;
    }

    if (camera1 != null){
        try {
            camera1.setPreviewDisplay(surfaceHolder);
            camera1.startPreview();
            previewing = true;
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

public void surfaceCreated(SurfaceHolder holder) {
    // TODO Auto-generated method stub

}

public void surfaceDestroyed(SurfaceHolder holder) {
    // TODO Auto-generated method stub

        camera1.stopPreview();
        camera1.release();
        camera1 = null;
        previewing = false;

}

in AndroidManifest.xml give user-permissions.

<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera" android:required="false"/>
<uses-feature android:name="android.hardware.camera.front" android:required="false"/>

and also not forgot ( implements SurfaceHolder.Callback ) to the class.

I already created like that kind of Camera. What I did is, I covered the other area of the camera with an image, and cut the center part of the image and save it as png file, to make the center transparent.

You will set background image of your frame(camera preview) with that image. So that it will look like the camera is only that portion that is transparent or the circle.

I used this tutorial to open,create preview,and take picture from camera device http://developer.android.com/guide/topics/media/camera.html

in this part(u can see this in the link I provide above)

 private PictureCallback mPicture = new PictureCallback() {

 @Override
 public void onPictureTaken(byte[] data, Camera camera) {
   //this is where you crop your image
    BitmapFactory.Options opt = new BitmapFactory.Options();
    opt.inMutable = true;
    Bitmap bitmap = BitmapFactory
            .decodeByteArray(data, 0, data.length, opt);

    bitmap=Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas mcanvas=new Canvas(bitmap);
    //do the cropping here, bitmap is the image you will use to crop

  }

 }

follow this tutorial on how to crop the image to circle Cropping circular area from bitmap in Android

you can use surface view.after capture image u can get in bitmap and draw canvas also

http://developer.android.com/reference/android/view/View.html#onDraw(android.graphics.Canvas)

http://developer.android.com/reference/android/view/SurfaceView.html#setZOrderMediaOverlay(boolean)