コード例 #1
0
 int[] getRowHeights() {
   BarcodeMetadata barcodeMetadata = getBarcodeMetadata();
   if (barcodeMetadata == null) {
     return null;
   }
   adjustIncompleteIndicatorColumnRowNumbers(barcodeMetadata);
   int[] result = new int[barcodeMetadata.getRowCount()];
   for (Codeword codeword : getCodewords()) {
     if (codeword != null) {
       result[codeword.getRowNumber()]++;
     }
   }
   return result;
 }
コード例 #2
0
  // TODO maybe we should add missing codewords to store the correct row number to make
  // finding row numbers for other columns easier
  // use row height count to make detection of invalid row numbers more reliable
  int adjustIncompleteIndicatorColumnRowNumbers(BarcodeMetadata barcodeMetadata) {
    BoundingBox boundingBox = getBoundingBox();
    ResultPoint top = isLeft ? boundingBox.getTopLeft() : boundingBox.getTopRight();
    ResultPoint bottom = isLeft ? boundingBox.getBottomLeft() : boundingBox.getBottomRight();
    int firstRow = imageRowToCodewordIndex((int) top.getY());
    int lastRow = imageRowToCodewordIndex((int) bottom.getY());
    float averageRowHeight = (lastRow - firstRow) / (float) barcodeMetadata.getRowCount();
    Codeword[] codewords = getCodewords();
    int barcodeRow = -1;
    int maxRowHeight = 1;
    int currentRowHeight = 0;
    for (int codewordsRow = firstRow; codewordsRow < lastRow; codewordsRow++) {
      if (codewords[codewordsRow] == null) {
        continue;
      }
      Codeword codeword = codewords[codewordsRow];

      codeword.setRowNumberAsRowIndicatorColumn();

      int rowDifference = codeword.getRowNumber() - barcodeRow;

      // TODO improve handling with case where first row indicator doesn't start with 0

      if (rowDifference == 0) {
        currentRowHeight++;
      } else if (rowDifference == 1) {
        maxRowHeight = Math.max(maxRowHeight, currentRowHeight);
        currentRowHeight = 1;
        barcodeRow = codeword.getRowNumber();
      } else if (codeword.getRowNumber() >= barcodeMetadata.getRowCount()) {
        codewords[codewordsRow] = null;
      } else {
        barcodeRow = codeword.getRowNumber();
        currentRowHeight = 1;
      }
    }
    return (int) (averageRowHeight + 0.5);
  }
コード例 #3
0
 private void removeIncorrectCodewords(Codeword[] codewords, BarcodeMetadata barcodeMetadata) {
   // Remove codewords which do not match the metadata
   // TODO Maybe we should keep the incorrect codewords for the start and end positions?
   for (int codewordRow = 0; codewordRow < codewords.length; codewordRow++) {
     Codeword codeword = codewords[codewordRow];
     if (codewords[codewordRow] == null) {
       continue;
     }
     int rowIndicatorValue = codeword.getValue() % 30;
     int codewordRowNumber = codeword.getRowNumber();
     if (codewordRowNumber > barcodeMetadata.getRowCount()) {
       codewords[codewordRow] = null;
       continue;
     }
     if (!isLeft) {
       codewordRowNumber += 2;
     }
     switch (codewordRowNumber % 3) {
       case 0:
         if (rowIndicatorValue * 3 + 1 != barcodeMetadata.getRowCountUpperPart()) {
           codewords[codewordRow] = null;
         }
         break;
       case 1:
         if (rowIndicatorValue / 3 != barcodeMetadata.getErrorCorrectionLevel()
             || rowIndicatorValue % 3 != barcodeMetadata.getRowCountLowerPart()) {
           codewords[codewordRow] = null;
         }
         break;
       case 2:
         if (rowIndicatorValue + 1 != barcodeMetadata.getColumnCount()) {
           codewords[codewordRow] = null;
         }
         break;
     }
   }
 }
コード例 #4
0
  // TODO implement properly
  // TODO maybe we should add missing codewords to store the correct row number to make
  // finding row numbers for other columns easier
  // use row height count to make detection of invalid row numbers more reliable
  int adjustCompleteIndicatorColumnRowNumbers(BarcodeMetadata barcodeMetadata) {
    Codeword[] codewords = getCodewords();
    setRowNumbers();
    removeIncorrectCodewords(codewords, barcodeMetadata);
    BoundingBox boundingBox = getBoundingBox();
    ResultPoint top = isLeft ? boundingBox.getTopLeft() : boundingBox.getTopRight();
    ResultPoint bottom = isLeft ? boundingBox.getBottomLeft() : boundingBox.getBottomRight();
    int firstRow = imageRowToCodewordIndex((int) top.getY());
    int lastRow = imageRowToCodewordIndex((int) bottom.getY());
    // We need to be careful using the average row height. Barcode could be skewed so that we have
    // smaller and
    // taller rows
    float averageRowHeight = (lastRow - firstRow) / (float) barcodeMetadata.getRowCount();
    int barcodeRow = -1;
    int maxRowHeight = 1;
    int currentRowHeight = 0;
    for (int codewordsRow = firstRow; codewordsRow < lastRow; codewordsRow++) {
      if (codewords[codewordsRow] == null) {
        continue;
      }
      Codeword codeword = codewords[codewordsRow];

      //      float expectedRowNumber = (codewordsRow - firstRow) / averageRowHeight;
      //      if (Math.abs(codeword.getRowNumber() - expectedRowNumber) > 2) {
      //        SimpleLog.log(LEVEL.WARNING,
      //            "Removing codeword, rowNumberSkew too high, codeword[" + codewordsRow + "]:
      // Expected Row: " +
      //                expectedRowNumber + ", RealRow: " + codeword.getRowNumber() + ", value: " +
      // codeword.getValue());
      //        codewords[codewordsRow] = null;
      //      }

      int rowDifference = codeword.getRowNumber() - barcodeRow;

      // TODO improve handling with case where first row indicator doesn't start with 0

      if (rowDifference == 0) {
        currentRowHeight++;
      } else if (rowDifference == 1) {
        maxRowHeight = Math.max(maxRowHeight, currentRowHeight);
        currentRowHeight = 1;
        barcodeRow = codeword.getRowNumber();
      } else if (rowDifference < 0
          || codeword.getRowNumber() >= barcodeMetadata.getRowCount()
          || rowDifference > codewordsRow) {
        codewords[codewordsRow] = null;
      } else {
        int checkedRows;
        if (maxRowHeight > 2) {
          checkedRows = (maxRowHeight - 2) * rowDifference;
        } else {
          checkedRows = rowDifference;
        }
        boolean closePreviousCodewordFound = checkedRows >= codewordsRow;
        for (int i = 1; i <= checkedRows && !closePreviousCodewordFound; i++) {
          // there must be (height * rowDifference) number of codewords missing. For now we assume
          // height = 1.
          // This should hopefully get rid of most problems already.
          closePreviousCodewordFound = codewords[codewordsRow - i] != null;
        }
        if (closePreviousCodewordFound) {
          codewords[codewordsRow] = null;
        } else {
          barcodeRow = codeword.getRowNumber();
          currentRowHeight = 1;
        }
      }
    }
    return (int) (averageRowHeight + 0.5);
  }