com.google.zxing.ReaderException源码实例Demo-星河码客

类com.google.zxing.ReaderException源码实例Demo

下面列出了怎么用com.google.zxing.ReaderException的API类实例代码及写法，或者点击链接到github查看源代码。

源代码1 项目： ScreenCapture 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码2 项目： java-study 文件： QrCodeCreateUtil.java

/**
 * 读二维码并输出携带的信息
 */
public static void readQrCode(InputStream inputStream) throws IOException {
    //从输入流中获取字符串信息
    BufferedImage image = ImageIO.read(inputStream);
    //将图像转换为二进制位图源
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    Result result = null;
    try {
        result = reader.decode(bitmap);
    } catch (ReaderException e) {
        e.printStackTrace();
    }
    System.out.println(result.getText());
}

源代码3 项目： code-scanner 文件： BarcodeUtils.java

/**
 * Decode barcode from YUV pixels array
 *
 * @param pixels            YUV image data
 * @param width             Image width
 * @param height            Image height
 * @param rotation          Degrees to rotate image before decoding (only 0, 90, 180 or 270 are allowed)
 * @param reverseHorizontal Reverse image horizontally before decoding
 * @param hints             Decoder hints
 * @return Decode result, if barcode was decoded successfully, {@code null} otherwise
 * @see DecodeHintType
 */
@Nullable
@SuppressWarnings("SuspiciousNameCombination")
public static Result decodeYuv(@NonNull final byte[] pixels, final int width, final int height,
        @Rotation final int rotation, final boolean reverseHorizontal,
        @Nullable final Map<DecodeHintType, ?> hints) {
    Objects.requireNonNull(pixels);
    final byte[] rotatedPixels = Utils.rotateYuv(pixels, width, height, rotation);
    final int rotatedWidth;
    final int rotatedHeight;
    if (rotation == ROTATION_90 || rotation == ROTATION_270) {
        rotatedWidth = height;
        rotatedHeight = width;
    } else {
        rotatedWidth = width;
        rotatedHeight = height;
    }
    final MultiFormatReader reader = createReader(hints);
    try {
        return Utils.decodeLuminanceSource(reader,
                new PlanarYUVLuminanceSource(rotatedPixels, rotatedWidth, rotatedHeight, 0, 0,
                        rotatedWidth, rotatedHeight, reverseHorizontal));
    } catch (final ReaderException e) {
        return null;
    }
}

源代码4 项目： code-scanner 文件： DecodeTask.java

@Nullable
@SuppressWarnings("SuspiciousNameCombination")
public Result decode(@NonNull final MultiFormatReader reader) throws ReaderException {
    int imageWidth = mImageSize.getX();
    int imageHeight = mImageSize.getY();
    final int orientation = mOrientation;
    final byte[] image = Utils.rotateYuv(mImage, imageWidth, imageHeight, orientation);
    if (orientation == 90 || orientation == 270) {
        final int width = imageWidth;
        imageWidth = imageHeight;
        imageHeight = width;
    }
    final Rect frameRect =
            Utils.getImageFrameRect(imageWidth, imageHeight, mViewFrameRect, mPreviewSize,
                    mViewSize);
    final int frameWidth = frameRect.getWidth();
    final int frameHeight = frameRect.getHeight();
    if (frameWidth < 1 || frameHeight < 1) {
        return null;
    }
    return Utils.decodeLuminanceSource(reader,
            new PlanarYUVLuminanceSource(image, imageWidth, imageHeight, frameRect.getLeft(),
                    frameRect.getTop(), frameWidth, frameHeight, mReverseHorizontal));
}

源代码5 项目： Tesseract-OCR-Scanner 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码6 项目： QrCodeScanner 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码7 项目： ZXing-Orient 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码8 项目： myapplication 文件： DecodeUtils.java

public Result decodeWithZxing(Bitmap bitmap) {
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(changeZXingDecodeDataMode());

    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

    Result rawResult = null;
    RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);

    BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
    try {
        rawResult = multiFormatReader.decodeWithState(binaryBitmap);
    } catch (ReaderException re) {
        // continue
    } finally {
        multiFormatReader.reset();
    }

    return rawResult;
}

源代码9 项目： analyzer-of-android-for-Apache-Weex 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码10 项目： weex 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码11 项目： Conversations 文件： ScanActivity.java

private void decode(final byte[] data) {
	final PlanarYUVLuminanceSource source = cameraManager.buildLuminanceSource(data);
	final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

	try {
		hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK, (ResultPointCallback) dot -> runOnUiThread(() -> scannerView.addDot(dot)));
		final Result scanResult = reader.decode(bitmap, hints);

		runOnUiThread(() -> handleResult(scanResult));
	} catch (final ReaderException x) {
		// retry
		cameraHandler.post(fetchAndDecodeRunnable);
	} finally {
		reader.reset();
	}
}

源代码12 项目： SimplifyReader 文件： DecodeUtils.java

public String decodeWithZxing(byte[] data, int width, int height, Rect crop) {
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(changeZXingDecodeDataMode());

    Result rawResult = null;
    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data, width, height,
            crop.left, crop.top, crop.width(), crop.height(), false);

    if (source != null) {
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        try {
            rawResult = multiFormatReader.decodeWithState(bitmap);
        } catch (ReaderException re) {
            // continue
        } finally {
            multiFormatReader.reset();
        }
    }

    return rawResult != null ? rawResult.getText() : null;
}

源代码13 项目： SimplifyReader 文件： DecodeUtils.java

public String decodeWithZxing(Bitmap bitmap) {
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(changeZXingDecodeDataMode());

    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

    Result rawResult = null;
    RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);

    if (source != null) {
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
        try {
            rawResult = multiFormatReader.decodeWithState(binaryBitmap);
        } catch (ReaderException re) {
            // continue
        } finally {
            multiFormatReader.reset();
        }
    }

    return rawResult != null ? rawResult.getText() : null;
}

源代码14 项目： attendee-checkin 文件： ScannerManager.java

private String decode(byte[] data, int width, int height) {
    ScannerManager manager = mManager.get();
    if (manager == null) {
        return null;
    }
    Rect rect = manager.getFramingRectInPreview();
    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data,
            width, height, rect.left, rect.top, rect.right, rect.bottom, false);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap, mHints);
        return result.getText();
    } catch (ReaderException e) {
        // Ignore as we will repeatedly decode the preview frame
        return null;
    }
}

源代码15 项目： Telegram-FOSS 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(EMPTY_DETECTOR_RESULTS);
  }
}

源代码16 项目： barcodescanner-lib-aar 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码17 项目： Pix-Art-Messenger 文件： ScanActivity.java

private void decode(final byte[] data) {
    final PlanarYUVLuminanceSource source = cameraManager.buildLuminanceSource(data);
    final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    try {
        hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK, (ResultPointCallback) dot -> runOnUiThread(() -> scannerView.addDot(dot)));
        final Result scanResult = reader.decode(bitmap, hints);

        runOnUiThread(() -> handleResult(scanResult));
    } catch (final ReaderException x) {
        // retry
        cameraHandler.post(fetchAndDecodeRunnable);
    } finally {
        reader.reset();
    }
}

源代码18 项目： reacteu-app 文件： MultiDetector.java

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<DetectorResult>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}

源代码19 项目： green_android 文件： ScanActivity.java

private void decode(final byte[] data)
{
    final PlanarYUVLuminanceSource source = cameraManager.buildLuminanceSource(data);
    final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    try {
        hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK,
                  (ResultPointCallback) dot -> runOnUiThread(() -> scannerView.addDot(dot)));
        final Result scanResult = reader.decode(bitmap, hints);

        final int thumbnailWidth = source.getThumbnailWidth();
        final int thumbnailHeight = source.getThumbnailHeight();
        final float thumbnailScaleFactor = (float) thumbnailWidth / source.getWidth();

        final Bitmap thumbnailImage = Bitmap.createBitmap(thumbnailWidth, thumbnailHeight,
                                                          Bitmap.Config.ARGB_8888);
        thumbnailImage.setPixels(
            source.renderThumbnail(), 0, thumbnailWidth, 0, 0, thumbnailWidth, thumbnailHeight);

        runOnUiThread(() -> handleResult(scanResult, thumbnailImage, thumbnailScaleFactor));
    } catch (final ReaderException x) {
        // retry
        cameraHandler.post(fetchAndDecodeRunnable);
    } finally {
        reader.reset();
    }
}

源代码20 项目： green_android 文件： ScanForResultActivity.java

private void decode(final byte[] data)
{
    final PlanarYUVLuminanceSource source = cameraManager.buildLuminanceSource(data);
    final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    try {
        hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK,
                  (ResultPointCallback) dot -> runOnUiThread(() -> scannerView.addDot(dot)));
        final Result scanResult = reader.decode(bitmap, hints);

        Log.d(TAG,"scanResult " + scanResult);
        final int thumbnailWidth = source.getThumbnailWidth();
        final int thumbnailHeight = source.getThumbnailHeight();
        final float thumbnailScaleFactor = (float) thumbnailWidth / source.getWidth();

        final Bitmap thumbnailImage = Bitmap.createBitmap(thumbnailWidth, thumbnailHeight,
                                                          Bitmap.Config.ARGB_8888);
        thumbnailImage.setPixels(
            source.renderThumbnail(), 0, thumbnailWidth, 0, 0, thumbnailWidth, thumbnailHeight);

        runOnUiThread(() -> handleResult(scanResult, thumbnailImage, thumbnailScaleFactor));
    } catch (final ReaderException x) {
        // retry
        cameraHandler.post(fetchAndDecodeRunnable);
    } finally {
        reader.reset();
    }
}

源代码21 项目： ScreenCapture 文件： MultiFormatOneDReader.java

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        Map<DecodeHintType,?> hints) throws NotFoundException {
  for (OneDReader reader : readers) {
    try {
      return reader.decodeRow(rowNumber, row, hints);
    } catch (ReaderException re) {
      // continue
    }
  }

  throw NotFoundException.getNotFoundInstance();
}

源代码22 项目： ScreenCapture 文件： UPCEANExtensionSupport.java

Result decodeRow(int rowNumber, BitArray row, int rowOffset) throws NotFoundException {
  int[] extensionStartRange = UPCEANReader.findGuardPattern(row, rowOffset, false, EXTENSION_START_PATTERN);
  try {
    return fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
  } catch (ReaderException ignored) {
    return twoSupport.decodeRow(rowNumber, row, extensionStartRange);
  }
}

源代码23 项目： ScreenCapture 文件： QRCodeMultiReader.java

@Override
public Result[] decodeMultiple(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException {
  List<Result> results = new ArrayList<>();
  DetectorResult[] detectorResults = new MultiDetector(image.getBlackMatrix()).detectMulti(hints);
  for (DetectorResult detectorResult : detectorResults) {
    try {
      DecoderResult decoderResult = getDecoder().decode(detectorResult.getBits(), hints);
      ResultPoint[] points = detectorResult.getPoints();
      // If the code was mirrored: swap the bottom-left and the top-right points.
      if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
        ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
      }
      Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points,
                                 BarcodeFormat.QR_CODE);
      List<byte[]> byteSegments = decoderResult.getByteSegments();
      if (byteSegments != null) {
        result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
      }
      String ecLevel = decoderResult.getECLevel();
      if (ecLevel != null) {
        result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
      }
      if (decoderResult.hasStructuredAppend()) {
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
                           decoderResult.getStructuredAppendSequenceNumber());
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY,
                           decoderResult.getStructuredAppendParity());
      }
      results.add(result);
    } catch (ReaderException re) {
      // ignore and continue 
    }
  }
  if (results.isEmpty()) {
    return EMPTY_RESULT_ARRAY;
  } else {
    results = processStructuredAppend(results);
    return results.toArray(new Result[results.size()]);
  }
}

源代码24 项目： code-scanner 文件： BarcodeUtils.java

/**
 * Decode barcode from RGB pixels array
 *
 * @param pixels Colors in standard Android ARGB format
 * @param width  Image width
 * @param height Image height
 * @param hints  Decoder hints
 * @return Decode result, if barcode was decoded successfully, {@code null} otherwise
 * @see DecodeHintType
 * @see Color
 */
@Nullable
public static Result decodeRgb(@NonNull final int[] pixels, final int width, final int height,
        @Nullable final Map<DecodeHintType, ?> hints) {
    Objects.requireNonNull(pixels);
    final MultiFormatReader reader = createReader(hints);
    try {
        return Utils
                .decodeLuminanceSource(reader, new RGBLuminanceSource(width, height, pixels));
    } catch (final ReaderException e) {
        return null;
    }
}

源代码25 项目： code-scanner 文件： Utils.java

@Nullable
public static Result decodeLuminanceSource(@NonNull final MultiFormatReader reader,
        @NonNull final LuminanceSource luminanceSource) throws ReaderException {
    try {
        return reader.decodeWithState(new BinaryBitmap(new HybridBinarizer(luminanceSource)));
    } catch (final NotFoundException e) {
        return reader.decodeWithState(
                new BinaryBitmap(new HybridBinarizer(luminanceSource.invert())));
    } finally {
        reader.reset();
    }
}

源代码26 项目： Tesseract-OCR-Scanner 文件： QrUtils.java

/**
 * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency, reuse the same reader
 * objects from one decode to the next.
 */
public static Result decodeImage(byte[] data, int width, int height) {
    // 处理
    Result result = null;
    try {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        PlanarYUVLuminanceSource source =
                new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        /**
         * HybridBinarizer算法使用了更高级的算法，但使用GlobalHistogramBinarizer识别效率确实比HybridBinarizer要高一些。
         *
         * GlobalHistogram算法：（http://kuangjianwei.blog.163.com/blog/static/190088953201361015055110/）
         *
         * 二值化的关键就是定义出黑白的界限，我们的图像已经转化为了灰度图像，每个点都是由一个灰度值来表示，就需要定义出一个灰度值，大于这个值就为白（0），低于这个值就为黑（1）。
         * 在GlobalHistogramBinarizer中，是从图像中均匀取5行（覆盖整个图像高度），每行取中间五分之四作为样本；以灰度值为X轴，每个灰度值的像素个数为Y轴建立一个直方图，
         * 从直方图中取点数最多的一个灰度值，然后再去给其他的灰度值进行分数计算，按照点数乘以与最多点数灰度值的距离的平方来进行打分，选分数最高的一个灰度值。接下来在这两个灰度值中间选取一个区分界限，
         * 取的原则是尽量靠近中间并且要点数越少越好。界限有了以后就容易了，与整幅图像的每个点进行比较，如果灰度值比界限小的就是黑，在新的矩阵中将该点置1，其余的就是白，为0。
         */
        BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
        // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader2 = new QRCodeReader();
        result = reader2.decode(bitmap1, hints);
    } catch (ReaderException e) {
    }
    return result;
}

源代码27 项目： Tesseract-OCR-Scanner 文件： MultiFormatOneDReader.java

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        Map<DecodeHintType,?> hints) throws NotFoundException {
  for (OneDReader reader : readers) {
    try {
      return reader.decodeRow(rowNumber, row, hints);
    } catch (ReaderException re) {
      // continue
    }
  }

  throw NotFoundException.getNotFoundInstance();
}

源代码28 项目： Tesseract-OCR-Scanner 文件： UPCEANExtensionSupport.java

Result decodeRow(int rowNumber, BitArray row, int rowOffset) throws NotFoundException {
  int[] extensionStartRange = UPCEANReader.findGuardPattern(row, rowOffset, false, EXTENSION_START_PATTERN);
  try {
    return fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
  } catch (ReaderException ignored) {
    return twoSupport.decodeRow(rowNumber, row, extensionStartRange);
  }
}

源代码29 项目： Tesseract-OCR-Scanner 文件： QRCodeMultiReader.java

@Override
public Result[] decodeMultiple(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException {
  List<Result> results = new ArrayList<>();
  DetectorResult[] detectorResults = new MultiDetector(image.getBlackMatrix()).detectMulti(hints);
  for (DetectorResult detectorResult : detectorResults) {
    try {
      DecoderResult decoderResult = getDecoder().decode(detectorResult.getBits(), hints);
      ResultPoint[] points = detectorResult.getPoints();
      // If the code was mirrored: swap the bottom-left and the top-right points.
      if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
        ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
      }
      Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points,
                                 BarcodeFormat.QR_CODE);
      List<byte[]> byteSegments = decoderResult.getByteSegments();
      if (byteSegments != null) {
        result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
      }
      String ecLevel = decoderResult.getECLevel();
      if (ecLevel != null) {
        result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
      }
      if (decoderResult.hasStructuredAppend()) {
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
                           decoderResult.getStructuredAppendSequenceNumber());
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY,
                           decoderResult.getStructuredAppendParity());
      }
      results.add(result);
    } catch (ReaderException re) {
      // ignore and continue 
    }
  }
  if (results.isEmpty()) {
    return EMPTY_RESULT_ARRAY;
  } else {
    results = processStructuredAppend(results);
    return results.toArray(new Result[results.size()]);
  }
}

源代码30 项目： QrCodeScanner 文件： QrUtils.java

/**
 * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency, reuse the same reader
 * objects from one decode to the next.
 */
public static Result decodeImage(byte[] data, int width, int height) {
    // 处理
    Result result = null;
    try {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        PlanarYUVLuminanceSource source =
                new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        /**
         * HybridBinarizer算法使用了更高级的算法，但使用GlobalHistogramBinarizer识别效率确实比HybridBinarizer要高一些。
         *
         * GlobalHistogram算法：（http://kuangjianwei.blog.163.com/blog/static/190088953201361015055110/）
         *
         * 二值化的关键就是定义出黑白的界限，我们的图像已经转化为了灰度图像，每个点都是由一个灰度值来表示，就需要定义出一个灰度值，大于这个值就为白（0），低于这个值就为黑（1）。
         * 在GlobalHistogramBinarizer中，是从图像中均匀取5行（覆盖整个图像高度），每行取中间五分之四作为样本；以灰度值为X轴，每个灰度值的像素个数为Y轴建立一个直方图，
         * 从直方图中取点数最多的一个灰度值，然后再去给其他的灰度值进行分数计算，按照点数乘以与最多点数灰度值的距离的平方来进行打分，选分数最高的一个灰度值。接下来在这两个灰度值中间选取一个区分界限，
         * 取的原则是尽量靠近中间并且要点数越少越好。界限有了以后就容易了，与整幅图像的每个点进行比较，如果灰度值比界限小的就是黑，在新的矩阵中将该点置1，其余的就是白，为0。
         */
        BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
        // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader2 = new QRCodeReader();
        result = reader2.decode(bitmap1, hints);
    } catch (ReaderException e) {
    }
    return result;
}

类所在包

com.google.zxing

类方法

com.google.zxing.BarcodeFormat

com.google.zxing.common.BitMatrix

com.google.zxing.Result

com.google.zxing.common.HybridBinarizer

com.google.zxing.BinaryBitmap

com.google.zxing.DecodeHintType

com.google.zxing.MultiFormatReader

同包方法

com.google.zxing.BarcodeFormat