com.google.zxing.datamatrix
Class DataMatrixReader

java.lang.Object
  com.google.zxing.datamatrix.DataMatrixReader

All Implemented Interfaces:

Reader

public final class DataMatrixReader
extends Object
implements Reader

This implementation can detect and decode Data Matrix codes in an image.

Since:

BlackBerry API 6.0.0

Constructor Summary

DataMatrixReader()

Method Summary
Result	decode(BinaryBitmap image) Locates and decodes a Data Matrix code in an image.
Result	decode(BinaryBitmap image, Hashtable hints) Locates and decodes a barcode in some format within an image.
static BitMatrix	extractPureBits(BitMatrix image) This method detects a code in a "pure" image -- that is, pure monochrome image which contains only an unrotated, unskewed, image of a code, with some white border around it.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataMatrixReader

public DataMatrixReader()

Since:

BlackBerry API 6.0.0

Method Detail

decode

public Result decode(BinaryBitmap image)
              throws NotFoundException,
                     ChecksumException,
                     FormatException

Locates and decodes a Data Matrix code in an image.

Specified by:

decode in interface Reader

Parameters:

image - image of barcode to decode

Returns:

a String representing the content encoded by the Data Matrix code

Throws:

NotFoundException - if a Data Matrix code cannot be found

FormatException - if a Data Matrix code cannot be decoded

ChecksumException - if error correction fails

Since:

BlackBerry API 6.0.0

decode

public Result decode(BinaryBitmap image,
                     Hashtable hints)
              throws NotFoundException,
                     ChecksumException,
                     FormatException

Description copied from interface: Reader

Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

Specified by:

decode in interface Reader

Parameters:

image - image of barcode to decode

hints - passed as a Hashtable from DecodeHintType to arbitrary data. The meaning of the data depends upon the hint type. The implementation may or may not do anything with these hints.

Returns:

String which the barcode encodes

Throws:

NotFoundException - if the barcode cannot be located or decoded for any reason

ChecksumException

FormatException

Since:

BlackBerry API 6.0.0

extractPureBits

public static BitMatrix extractPureBits(BitMatrix image)
                                 throws NotFoundException

This method detects a code in a "pure" image -- that is, pure monochrome image which contains only an unrotated, unskewed, image of a code, with some white border around it. This is a specialized method that works exceptionally fast in this special case.

Throws:

NotFoundException

See Also:

PDF417Reader.extractPureBits(BitMatrix), QRCodeReader.extractPureBits(BitMatrix)

Since:

BlackBerry API 7.0.0