android.hardware.camera2.CaptureRequest 可以与 OpenCV 一起使用吗？

我已经为此工作好几天了。我有一个基于 OpenCV/JavaCameraView 的项目，我正在尝试与 Android 集成android.hardware.camera2.CaptureRequest我用来控制相机对光的敏感度的对象。

The CameraBridgeViewBase.CvCameraViewListener2/JavaCameraView项目有效（我可以在屏幕上看到图像），并且CaptureRequest项目有效（也请参见此），但是将两种技术结合在一个项目中已被证明是一个大问题。

有人让这两种技术一起工作吗？我的目标是让相机受到 CaptureRequest 的控制（有限的 SENSOR_SENSITIVITY + SENSOR_EXPOSURE_TIME），但让屏幕显示通过我编写的 OpenCV 共享库过滤的流图像。

为了控制相机，我可以使用这样的东西：

        mCameraDevice.createCaptureSession(Arrays.asList(surface, mImageReader.getSurface()),
                new CameraCaptureSession.StateCallback() {
                    @Override
                    public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
                        // The camera is already closed
                        if (null == mCameraDevice) {
                            return;
                        }
                        long exposureTime = 66259688,frameDuration = 1000;
                        int sensitivity = 1512;

                        mCaptureSession = cameraCaptureSession;
                        try {

                            mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE,
                                    CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);

                            setAutoFlash(mPreviewRequestBuilder);
                            mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_OFF);
                            mPreviewRequestBuilder.set(CaptureRequest.SENSOR_EXPOSURE_TIME, Long.valueOf(exposureTime));
                            mPreviewRequestBuilder.set(CaptureRequest.SENSOR_SENSITIVITY, Integer.valueOf(sensitivity));
                            mPreviewRequestBuilder.set(CaptureRequest.SENSOR_FRAME_DURATION, Long.valueOf(frameDuration));

                            mPreviewRequest = mPreviewRequestBuilder.build();
                            mCaptureSession.setRepeatingRequest(mPreviewRequest,
                                    mCaptureCallback, mBackgroundHandler);


                        } catch (CameraAccessException e) {
                            e.printStackTrace();
                        }catch (Exception e) {
                            e.printStackTrace();
                        }
                    }

要过滤图像流，我可以使用如下内容：

public class MyCoolScanner extends AppCompatActivity implements CameraBridgeViewBase.CvCameraViewListener2 {
...
@Override
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
    mRgba = inputFrame.rgba();

    OpenCVNative.myCoolLibrary(mRgba.getNativeObjAddr(),mGray.getNativeObjAddr());
    return mGray;
}

提前致谢。

请找到 Android 上的 open CV 实现，它可能对你有帮助。

使用 OpenCV 进行相机标定 https://github.com/opencv/opencv/tree/master/samples/android/camera-calibration/src/org/opencv/samples/cameracalibration

相机标定-opencv 2.3.1 android

https://groups.google.com/forum/#!topic/android-opencv/xXtUvdA1E4M https://groups.google.com/forum/#!topic/android-opencv/xXtUvdA1E4M

https://fossies.org/dox/opencv-3.2.0/CameraCalibrationActivity_8java_source.html https://fossies.org/dox/opencv-3.2.0/CameraCalibrationActivity_8java_source.html