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

Example 46 with NotFoundException

use of com.google.zxing.NotFoundException in project QRCode by 5peak2me.

the class MipcaActivityCapture method scanningImage.

/**
 * 扫描二维码图片的方法
 * @param path
 * @return
 */
public Result scanningImage(String path) {
    if (TextUtils.isEmpty(path)) {
        return null;
    }
    Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
    // 设置二维码内容的编码
    hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
    BitmapFactory.Options options = new BitmapFactory.Options();
    // 先获取原大小
    options.inJustDecodeBounds = true;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    // 获取新的大小
    options.inJustDecodeBounds = false;
    int sampleSize = (int) (options.outHeight / (float) 200);
    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        return reader.decode(bitmap1, hints);
    } catch (NotFoundException e) {
        e.printStackTrace();
    } catch (ChecksumException e) {
        e.printStackTrace();
    } catch (FormatException e) {
        e.printStackTrace();
    }
    return null;
}

Example 47 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

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 48 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

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();
}

Example 49 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

the class Detector method processFinderPatternInfo.

protected final DetectorResult processFinderPatternInfo(FinderPatternInfo info) throws NotFoundException, FormatException {
    FinderPattern topLeft = info.getTopLeft();
    FinderPattern topRight = info.getTopRight();
    FinderPattern bottomLeft = info.getBottomLeft();
    float moduleSize = calculateModuleSize(topLeft, topRight, bottomLeft);
    if (moduleSize < 1.0f) {
        throw NotFoundException.getNotFoundInstance();
    }
    int dimension = computeDimension(topLeft, topRight, bottomLeft, moduleSize);
    Version provisionalVersion = Version.getProvisionalVersionForDimension(dimension);
    int modulesBetweenFPCenters = provisionalVersion.getDimensionForVersion() - 7;
    AlignmentPattern alignmentPattern = null;
    // Anything above version 1 has an alignment pattern
    if (provisionalVersion.getAlignmentPatternCenters().length > 0) {
        // Guess where a "bottom right" finder pattern would have been
        float bottomRightX = topRight.getX() - topLeft.getX() + bottomLeft.getX();
        float bottomRightY = topRight.getY() - topLeft.getY() + bottomLeft.getY();
        // Estimate that alignment pattern is closer by 3 modules
        // from "bottom right" to known top left location
        float correctionToTopLeft = 1.0f - 3.0f / modulesBetweenFPCenters;
        int estAlignmentX = (int) (topLeft.getX() + correctionToTopLeft * (bottomRightX - topLeft.getX()));
        int estAlignmentY = (int) (topLeft.getY() + correctionToTopLeft * (bottomRightY - topLeft.getY()));
        // Kind of arbitrary -- expand search radius before giving up
        for (int i = 4; i <= 16; i <<= 1) {
            try {
                alignmentPattern = findAlignmentInRegion(moduleSize, estAlignmentX, estAlignmentY, i);
                break;
            } catch (NotFoundException re) {
            // try next round
            }
        }
    // If we didn't find alignment pattern... well try anyway without it
    }
    PerspectiveTransform transform = createTransform(topLeft, topRight, bottomLeft, alignmentPattern, dimension);
    BitMatrix bits = sampleGrid(image, transform, dimension);
    ResultPoint[] points;
    if (alignmentPattern == null) {
        points = new ResultPoint[] { bottomLeft, topLeft, topRight };
    } else {
        points = new ResultPoint[] { bottomLeft, topLeft, topRight, alignmentPattern };
    }
    return new DetectorResult(bits, points);
}

Example 50 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

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;
    }
}