// 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); }
// 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); }