public abstract class OneDReader extends Object implements Reader
| Constructor and Description | 
|---|
| OneDReader() | 
| 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. | 
| abstract Result | decodeRow(int rowNumber,
         BitArray row,
         Map<DecodeHintType,?> hints)Attempts to decode a one-dimensional barcode format given a single row of
 an image. | 
| protected static float | patternMatchVariance(int[] counters,
                    int[] pattern,
                    float maxIndividualVariance)Determines how closely a set of observed counts of runs of black/white values matches a given
 target pattern. | 
| protected static void | recordPattern(BitArray row,
             int start,
             int[] counters)Records the size of successive runs of white and black pixels in a row, starting at a given point. | 
| protected static void | recordPatternInReverse(BitArray row,
                      int start,
                      int[] counters) | 
| void | reset()Resets any internal state the implementation has after a decode, to prepare it
 for reuse. | 
public Result decode(BinaryBitmap image) throws NotFoundException, FormatException
Readerdecode in interface Readerimage - 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 Readerimage - 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 invalidpublic void reset()
Readerprotected static void recordPattern(BitArray row, int start, int[] counters) throws NotFoundException
row - row to count fromstart - offset into row to start atcounters - array into which to record countsNotFoundException - if counters cannot be filled entirely from row before running out
  of pixelsprotected static void recordPatternInReverse(BitArray row, int start, int[] counters) throws NotFoundException
NotFoundExceptionprotected static float patternMatchVariance(int[] counters,
                                            int[] pattern,
                                            float maxIndividualVariance)
counters - observed counterspattern - expected patternmaxIndividualVariance - The most any counter can differ before we give uppublic abstract Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints) throws NotFoundException, ChecksumException, FormatException
Attempts to decode a one-dimensional barcode format given a single row of an image.
rowNumber - 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 foundChecksumException - if a potential barcode is found but does not pass its checksumFormatException - if a potential barcode is found but format is invalidCopyright © 2007–2019. All rights reserved.