android-camera2

I have been trying to integrate ARToolkit Marker Object tracking into a Tango Application . So far I have created a build so that a tango app can access and use the ARToolkit Native Library or the ARToolkit Unity wrappers. However, they both seem to require exclusive access to the camera in their default configurations. How could you feed the same Android video feed to both libraries? Could you create a dummy camera device which doubles out the feed? Could you take the tango feed as normal, and then resend it into ARToolkit with a special VideoConf [edit] ARToolkit uses the older Camera1 API,

I'm using the Camera2 API on an S5, showing a TextureView-based preview at 720x480. With Camera1, the preview looks fine, but with Camera2 its distorted: I'm calling SurfaceTexture.setDefaultBufferSize properly, etc. This seems to work fine on non-Samsung phones. Curiously, if I modify Camera2Basic to use the front-facing camera and 720x480 it has the same distortion: Any idea what may be behind this problem? It seems reminiscent of another Samsung aspect ratio problem I've seen but I'm not sure how to translate that work-around over to Camera2. 来源： https://stackoverflow.com/questions/35709754

I configured my code in order to get a stream of YUV_420_888 frames from my device's camera using an imageReader object and the rest of the well known camera2 API. Now I need to transform these frames to NV21 pixel format and call a native function which expect a frame in this format to perform certain computations. This is the code I am using inside the imagereader callback to rearrange the bytes of the frame: ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() { @Override public void onImageAvailable(ImageReader mReader) { Image image = null;

I was following a youtube tutorial , trying to learn Camera2 API. Of course, I was learning this at the same time that I was developing my own app. One inconsistency between the tutorial and my app is that the tutorial made the camera in portrait mode only while my app must be in landscape. I'm currently able to view the preview of the camera, though while my app is in landscape or horizontal, the camera preview looks rotated 90 degrees. It almost feels like I can rotate the TextureView, but that just seems incorrect, like when I take a picture, it will be rotated incorrectly. Below is the

I try to change the aspect ratio of the Camera2 preview but I fail :-( For cropping I have to use the SCALER_CROP_REGION but I don't get it working. I used the android-Camera2Video example from Google for my tests. In the openCamera method I added the following line: mSensorSize = characteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE); And in startPreview I added this: final int centerX = mSensorSize.width() / 2; final int centerY = mSensorSize.height() / 2; final int cropSize = Math.min(mSensorSize.width(), mSensorSize.height()); final Rect crop = new Rect(centerY - cropSize