public final class UPCAReader extends UPCEANReader
Implements decoding of the UPC-A format.
| Constructor and Description |
|---|
UPCAReader() |
| Modifier and Type | Method and Description |
|---|---|
Result |
decode(BinaryBitmap image)
Locates and decodes a barcode in some format within an image.
|
Result |
decode(BinaryBitmap image,
Map<DecodeHintType,?> hints)
Locates and decodes a barcode in some format within an image.
|
protected int |
decodeMiddle(BitArray row,
int[] startRange,
StringBuilder resultString)
Subclasses override this to decode the portion of a barcode between the start
and end guard patterns.
|
Result |
decodeRow(int rowNumber,
BitArray row,
int[] startGuardRange,
Map<DecodeHintType,?> hints)
Like
UPCEANReader.decodeRow(int, BitArray, Map), but
allows caller to inform method about where the UPC/EAN start pattern is
found. |
Result |
decodeRow(int rowNumber,
BitArray row,
Map<DecodeHintType,?> hints)
Attempts to decode a one-dimensional barcode format given a single row of
an image.
|
patternMatchVariance, recordPattern, recordPatternInReverse, resetpublic Result decodeRow(int rowNumber, BitArray row, int[] startGuardRange, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException, ChecksumException
UPCEANReaderLike UPCEANReader.decodeRow(int, BitArray, Map), but
allows caller to inform method about where the UPC/EAN start pattern is
found. This allows this to be computed once and reused across many implementations.
decodeRow in class UPCEANReaderrowNumber - row index into the imagerow - encoding of the row of the barcode imagestartGuardRange - start/end column where the opening start pattern was foundhints - optional hints that influence decodingResult encapsulating the result of decoding a barcode in the rowNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidChecksumException - if a potential barcode is found but does not pass its checksumpublic Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException, ChecksumException
OneDReaderAttempts to decode a one-dimensional barcode format given a single row of an image.
decodeRow in class UPCEANReaderrowNumber - row number from top of the rowrow - the black/white pixel data of the rowhints - decode hintsResult containing encoded string and start/end of barcodeNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidChecksumException - if a potential barcode is found but does not pass its checksumpublic Result decode(BinaryBitmap image) throws NotFoundException, FormatException
Readerdecode in interface Readerdecode in class OneDReaderimage - image of barcode to decodeNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidpublic Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException
Readerdecode in interface Readerdecode in class OneDReaderimage - image of barcode to decodehints - passed as a Map 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.NotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidprotected int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString) throws NotFoundException
UPCEANReaderdecodeMiddle in class UPCEANReaderrow - row of black/white values to searchstartRange - start/end offset of start guard patternresultString - StringBuilder to append decoded chars toNotFoundException - if decoding could not complete successfullyCopyright © 2007–2018. All rights reserved.