Finds and recognizes text in a supplied Frame
.
Build new TextRecognizer instances using TextRecognizer.Builder
.
Recognition results are returned by
detect(Frame)
. The OCR algorithm tries to infer the text layout and organizes each
paragraph into TextBlock
instances. If any text is detected, at least one TextBlock
instance will be returned.
Adding the ocr functionality dependency to your project's AndroidManifest.xml will indicate to the installer that it should download the dependency on application install.
Nested Class Summary
class | TextRecognizer.Builder | TextRecognizer Builder. |
Public Method Summary
SparseArray<TextBlock> | |
boolean |
isOperational()
Indicates whether the detector has all of the required dependencies available
locally in order to do detection.
|
void |
release()
Shuts down the detector, releasing any underlying resources.
|
Inherited Method Summary
Public Methods
public SparseArray<TextBlock> detect (Frame frame)
public boolean isOperational ()
Indicates whether the detector has all of the required dependencies available locally in order to do detection.
When an app is first installed, it may be necessary to download required files. If this returns false, those files are not yet available. Usually this download is taken care of at application install time, but this is not guaranteed. In some cases the download may have been delayed.
If your code has added a processor, an indication of the detector operational state
is also indicated with the
detectorIsOperational()
method. You can check this in your app as it
processes detection results, and can convey this state to the user if appropriate.
Returns
- true if the detector is operational, false if the dependency download is in progress
public void release ()
Shuts down the detector, releasing any underlying resources.