Examples with NotFoundException com.google.zxing.NotFoundException used on opensource projects

Example 1 with NotFoundException

use of com.google.zxing.NotFoundException in project zxing by zxing.

the class RSSExpandedInternalTestCase method testFindFinderPatterns.

@Test
public void testFindFinderPatterns() throws Exception {
    BufferedImage image = readImage("2.png");
    BinaryBitmap binaryMap = new BinaryBitmap(new GlobalHistogramBinarizer(new BufferedImageLuminanceSource(image)));
    int rowNumber = binaryMap.getHeight() / 2;
    BitArray row = binaryMap.getBlackRow(rowNumber, null);
    List<ExpandedPair> previousPairs = new ArrayList<>();
    RSSExpandedReader rssExpandedReader = new RSSExpandedReader();
    ExpandedPair pair1 = rssExpandedReader.retrieveNextPair(row, previousPairs, rowNumber);
    previousPairs.add(pair1);
    FinderPattern finderPattern = pair1.getFinderPattern();
    assertNotNull(finderPattern);
    assertEquals(0, finderPattern.getValue());
    ExpandedPair pair2 = rssExpandedReader.retrieveNextPair(row, previousPairs, rowNumber);
    previousPairs.add(pair2);
    finderPattern = pair2.getFinderPattern();
    assertNotNull(finderPattern);
    assertEquals(1, finderPattern.getValue());
    ExpandedPair pair3 = rssExpandedReader.retrieveNextPair(row, previousPairs, rowNumber);
    previousPairs.add(pair3);
    finderPattern = pair3.getFinderPattern();
    assertNotNull(finderPattern);
    assertEquals(1, finderPattern.getValue());
    try {
        rssExpandedReader.retrieveNextPair(row, previousPairs, rowNumber);
        //   the previous was the last pair
        fail(NotFoundException.class.getName() + " expected");
    } catch (NotFoundException nfe) {
    // ok
    }
}

Example 2 with NotFoundException

use of com.google.zxing.NotFoundException in project zxing by zxing.

the class RSSExpandedStackedInternalTestCase method testDecodingRowByRow.

@Test
public void testDecodingRowByRow() throws Exception {
    RSSExpandedReader rssExpandedReader = new RSSExpandedReader();
    BinaryBitmap binaryMap = TestCaseUtil.getBinaryBitmap("src/test/resources/blackbox/rssexpandedstacked-2/1000.png");
    int firstRowNumber = binaryMap.getHeight() / 3;
    BitArray firstRow = binaryMap.getBlackRow(firstRowNumber, null);
    try {
        rssExpandedReader.decodeRow2pairs(firstRowNumber, firstRow);
        fail(NotFoundException.class.getName() + " expected");
    } catch (NotFoundException nfe) {
    // ok
    }
    assertEquals(1, rssExpandedReader.getRows().size());
    ExpandedRow firstExpandedRow = rssExpandedReader.getRows().get(0);
    assertEquals(firstRowNumber, firstExpandedRow.getRowNumber());
    assertEquals(2, firstExpandedRow.getPairs().size());
    firstExpandedRow.getPairs().get(1).getFinderPattern().getStartEnd()[1] = 0;
    int secondRowNumber = 2 * binaryMap.getHeight() / 3;
    BitArray secondRow = binaryMap.getBlackRow(secondRowNumber, null);
    secondRow.reverse();
    List<ExpandedPair> totalPairs = rssExpandedReader.decodeRow2pairs(secondRowNumber, secondRow);
    Result result = RSSExpandedReader.constructResult(totalPairs);
    assertEquals("(01)98898765432106(3202)012345(15)991231", result.getText());
}

Example 3 with NotFoundException

use of com.google.zxing.NotFoundException in project zxing by zxing.

the class Detector method getMatrixCenter.

/**
   * Finds a candidate center point of an Aztec code from an image
   *
   * @return the center point
   */
private Point getMatrixCenter() {
    ResultPoint pointA;
    ResultPoint pointB;
    ResultPoint pointC;
    ResultPoint pointD;
    //Get a white rectangle that can be the border of the matrix in center bull's eye or
    try {
        ResultPoint[] cornerPoints = new WhiteRectangleDetector(image).detect();
        pointA = cornerPoints[0];
        pointB = cornerPoints[1];
        pointC = cornerPoints[2];
        pointD = cornerPoints[3];
    } catch (NotFoundException e) {
        // This exception can be in case the initial rectangle is white
        // In that case, surely in the bull's eye, we try to expand the rectangle.
        int cx = image.getWidth() / 2;
        int cy = image.getHeight() / 2;
        pointA = getFirstDifferent(new Point(cx + 7, cy - 7), false, 1, -1).toResultPoint();
        pointB = getFirstDifferent(new Point(cx + 7, cy + 7), false, 1, 1).toResultPoint();
        pointC = getFirstDifferent(new Point(cx - 7, cy + 7), false, -1, 1).toResultPoint();
        pointD = getFirstDifferent(new Point(cx - 7, cy - 7), false, -1, -1).toResultPoint();
    }
    //Compute the center of the rectangle
    int cx = MathUtils.round((pointA.getX() + pointD.getX() + pointB.getX() + pointC.getX()) / 4.0f);
    int cy = MathUtils.round((pointA.getY() + pointD.getY() + pointB.getY() + pointC.getY()) / 4.0f);
    // in order to compute a more accurate center.
    try {
        ResultPoint[] cornerPoints = new WhiteRectangleDetector(image, 15, cx, cy).detect();
        pointA = cornerPoints[0];
        pointB = cornerPoints[1];
        pointC = cornerPoints[2];
        pointD = cornerPoints[3];
    } catch (NotFoundException e) {
        // This exception can be in case the initial rectangle is white
        // In that case we try to expand the rectangle.
        pointA = getFirstDifferent(new Point(cx + 7, cy - 7), false, 1, -1).toResultPoint();
        pointB = getFirstDifferent(new Point(cx + 7, cy + 7), false, 1, 1).toResultPoint();
        pointC = getFirstDifferent(new Point(cx - 7, cy + 7), false, -1, 1).toResultPoint();
        pointD = getFirstDifferent(new Point(cx - 7, cy - 7), false, -1, -1).toResultPoint();
    }
    // Recompute the center of the rectangle
    cx = MathUtils.round((pointA.getX() + pointD.getX() + pointB.getX() + pointC.getX()) / 4.0f);
    cy = MathUtils.round((pointA.getY() + pointD.getY() + pointB.getY() + pointC.getY()) / 4.0f);
    return new Point(cx, cy);
}

Example 4 with NotFoundException

use of com.google.zxing.NotFoundException in project zxing by zxing.

the class RSS14Reader method decodePair.

private Pair decodePair(BitArray row, boolean right, int rowNumber, Map<DecodeHintType, ?> hints) {
    try {
        int[] startEnd = findFinderPattern(row, right);
        FinderPattern pattern = parseFoundFinderPattern(row, rowNumber, right, startEnd);
        ResultPointCallback resultPointCallback = hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
        if (resultPointCallback != null) {
            float center = (startEnd[0] + startEnd[1]) / 2.0f;
            if (right) {
                // row is actually reversed
                center = row.getSize() - 1 - center;
            }
            resultPointCallback.foundPossibleResultPoint(new ResultPoint(center, rowNumber));
        }
        DataCharacter outside = decodeDataCharacter(row, pattern, true);
        DataCharacter inside = decodeDataCharacter(row, pattern, false);
        return new Pair(1597 * outside.getValue() + inside.getValue(), outside.getChecksumPortion() + 4 * inside.getChecksumPortion(), pattern);
    } catch (NotFoundException ignored) {
        return null;
    }
}

Example 5 with NotFoundException

use of com.google.zxing.NotFoundException in project zxing by zxing.

the class RSSExpandedReader method checkRows.

// Try to construct a valid rows sequence
// Recursion is used to implement backtracking
private List<ExpandedPair> checkRows(List<ExpandedRow> collectedRows, int currentRow) throws NotFoundException {
    for (int i = currentRow; i < rows.size(); i++) {
        ExpandedRow row = rows.get(i);
        this.pairs.clear();
        for (ExpandedRow collectedRow : collectedRows) {
            this.pairs.addAll(collectedRow.getPairs());
        }
        this.pairs.addAll(row.getPairs());
        if (!isValidSequence(this.pairs)) {
            continue;
        }
        if (checkChecksum()) {
            return this.pairs;
        }
        List<ExpandedRow> rs = new ArrayList<>();
        rs.addAll(collectedRows);
        rs.add(row);
        try {
            // Recursion: try to add more rows
            return checkRows(rs, i + 1);
        } catch (NotFoundException e) {
        // We failed, try the next candidate
        }
    }
    throw NotFoundException.getNotFoundInstance();
}