FirebaseVisionImage

Represents an image object that can be used for both on-device and cloud API detectors.

Public Method Summary

static FirebaseVisionImage	fromBitmap(Bitmap bitmap) Creates a `FirebaseVisionImage` from a `Bitmap`, where the object in the image should be already up-right and no rotation is needed.
static FirebaseVisionImage	fromByteArray(byte[] byteArray, FirebaseVisionImageMetadata metadata) Creates a `FirebaseVisionImage` from a byte array, e.g.
static FirebaseVisionImage	fromByteBuffer(ByteBuffer byteBuffer, FirebaseVisionImageMetadata metadata) Creates a `FirebaseVisionImage` from a `ByteBuffer`.
static FirebaseVisionImage	fromFilePath(Context context, Uri imageUri) Creates a `FirebaseVisionImage` from a local image file Uri.
static FirebaseVisionImage	fromMediaImage(Image image, int rotation) Creates a `FirebaseVisionImage` from a `Image` object, e.g.
Bitmap	getBitmap() Returns its bitmap representation.

Inherited Method Summary

From class java.lang.Object

Object	clone()
boolean	equals(Object arg0)
void	finalize()
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Public Methods

public static FirebaseVisionImage fromBitmap (Bitmap bitmap)

Creates a FirebaseVisionImage from a Bitmap, where the object in the image should be already up-right and no rotation is needed.

public static FirebaseVisionImage fromByteArray (byte[] byteArray, FirebaseVisionImageMetadata metadata)

Creates a FirebaseVisionImage from a byte array, e.g. what you get from Camera callback.

public static FirebaseVisionImage fromByteBuffer (ByteBuffer byteBuffer, FirebaseVisionImageMetadata metadata)

Creates a FirebaseVisionImage from a ByteBuffer.

We assume the entire buffer from position zero to its limit is all image data.

public static FirebaseVisionImage fromFilePath (Context context, Uri imageUri)

Creates a FirebaseVisionImage from a local image file Uri.

Throws

IOException	if the image could not be retrieved from the specified imageUri. This could happen even if the Uri came from content chooser, e.g. some users might have content providers for remote resources.

public static FirebaseVisionImage fromMediaImage (Image image, int rotation)

Creates a FirebaseVisionImage from a Image object, e.g. what you obtained from android.hardware.camera2 API.

Note that we only support JPEG / YUV_420_888 formats at this moment. If you are using cloud vision detectors, JPEG format is recommended; if you are using on-device detectors, YUV_420_888 will be more efficient.

After you get back a FirebaseVisionImage, it's safe to close the input Image.

Parameters

image
rotation	The camera rotation, e.g. `ROTATION_90` for back camera landscape mode. See also `FirebaseVisionImageMetadata.Rotation`.

public Bitmap getBitmap ()

Returns its bitmap representation.

The image will be rotated to up-right if it's created with rotation info via setRotation(int).