Package com.digimarc.dms.readers.image

Class DetectionRegion

java.lang.Object

com.digimarc.dms.readers.image.DetectionRegion

Direct Known Subclasses:

PreviewDetectionRegion

public class DetectionRegion
extends Object

Defines region of interest within a frame. This can be used with ImageReader.setImageDetectionRegion(DetectionRegion) or VideoCaptureReader.setImageDetectionRegion(DetectionRegion) to constrain the image area that DMSDK will use to search for 1D barcodes or Digimarc digital watermarks.

This implementation is suitable for apps that have region coordinates for the full input image. Apps that want to provide region coordinates based on a visible camera preview should use the PreviewDetectionRegion implementation instead.

Constructor Summary

Constructors

Constructor	Description
DetectionRegion(float left, float top, float right, float bottom, int rotation)
DetectionRegion(android.graphics.RectF regionOfInterest, int rotation)

Method Summary

Modifier and Type	Method	Description
float	getBottom()
float	getHeight()
float	getLeft()
android.graphics.RectF	getRect()
float	getRight()
float	getTop()
float	getWidth()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DetectionRegion

public DetectionRegion(float left,
 float top,
 float right,
 float bottom,
 int rotation)

DetectionRegion

public DetectionRegion(@NonNull
 android.graphics.RectF regionOfInterest,
 int rotation)

Parameters:

regionOfInterest - Region for detection. Each value within the rect should be in normalized coordinates (0..1)

rotation - Amount region should be rotated in degrees to match the target rotation of input frames

Throws:

IllegalArgumentException - if the provided region of interest violates constraints:

1) any value < 0.0f

2) any value > 1.0f

3) left > right

4) top > bottom

5) if either the height or width of the region < 0.15f.

Method Details

getRect

public android.graphics.RectF getRect()

getLeft

public float getLeft()

getTop

public float getTop()

getRight

public float getRight()

getBottom

public float getBottom()

getWidth

public float getWidth()

getHeight

public float getHeight()