Class TextPatternScannerFrameHandler
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- All Implemented Interfaces:
public final class TextPatternScannerFrameHandler extends FrameHandler
Performs pattern text scanning on camera preview frames. Outputs results via TextPatternScannerFrameHandler.ResultHandler.
Preview frame considered intercepted if at least one TextPatternScannerFrameHandler.ResultHandler returns
true
from TextPatternScannerFrameHandler.ResultHandler.handle
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Nested Class Summary
Nested Classes Modifier and Type Class Description public interface
TextPatternScannerFrameHandler.ResultHandler
Continuously notified about text scanning results.
public abstract class
TextPatternScannerFrameHandler.TextPatternScannerResultHandler
Successor-class needed for cross-platform implementation.
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Constructor Summary
Constructors Constructor Description TextPatternScannerFrameHandler(TextPatternScanner textPatternScanner)
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Method Summary
Modifier and Type Method Description Boolean
handleFrame(FrameHandler.Frame previewFrame)
Invoked for every new camera preview frame. final Unit
addResultHandler(TextPatternScannerFrameHandler.ResultHandler resultHandler)
Registers result handler which will be notified about text scanning results. final Unit
removeResultHandler(TextPatternScannerFrameHandler.ResultHandler resultHandler)
Unregisters handler. final Unit
clearResultHandlers()
Unregisters all handlers. final static TextPatternScannerFrameHandler
attach(IScanbotCameraView cameraView, TextPatternScanner textPatternScanner)
Convenience method for creating new TextPatternScannerFrameHandler and adding it as FrameHandler to given camera view. -
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Constructor Detail
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TextPatternScannerFrameHandler
TextPatternScannerFrameHandler(TextPatternScanner textPatternScanner)
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Method Detail
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handleFrame
@Synchronized() Boolean handleFrame(FrameHandler.Frame previewFrame)
Invoked for every new camera preview frame.
- Parameters:
previewFrame
- captured preview frame data
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addResultHandler
final Unit addResultHandler(TextPatternScannerFrameHandler.ResultHandler resultHandler)
Registers result handler which will be notified about text scanning results.
Results are coming on the worker thread. Don't forget to move execution to main thread before updating UI.
- Parameters:
resultHandler
- handler to register.
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removeResultHandler
final Unit removeResultHandler(TextPatternScannerFrameHandler.ResultHandler resultHandler)
Unregisters handler.
- Parameters:
resultHandler
- handler to unregister.
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clearResultHandlers
final Unit clearResultHandlers()
Unregisters all handlers. If nothing was registered before, nothing happens.
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attach
final static TextPatternScannerFrameHandler attach(IScanbotCameraView cameraView, TextPatternScanner textPatternScanner)
Convenience method for creating new TextPatternScannerFrameHandler and adding it as FrameHandler to given camera view.
- Parameters:
cameraView
- cameraView to attach handler totextPatternScanner
- scanner to perform ID card detection
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