Java 类com.google.zxing.Binarizer 实例源码

public static String decodeQr(String filePath) {
    String retStr = "";
    if ("".equalsIgnoreCase(filePath) && filePath.length() == 0) {
        return "图片路径为空!";
    }
    try {
        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filePath));
        LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
        Binarizer binarizer = new HybridBinarizer(source);
        BinaryBitmap bitmap = new BinaryBitmap(binarizer);
        HashMap<DecodeHintType, Object> hintTypeObjectHashMap = new HashMap<>();
        hintTypeObjectHashMap.put(DecodeHintType.CHARACTER_SET, "UTF-8");
        Result result = new MultiFormatReader().decode(bitmap, hintTypeObjectHashMap);
        retStr = result.getText();
    } catch (Exception e) {
        logger.error("", e);
    }
    return retStr;
}

public static String decodeQr(String filePath) {
    String retStr = "";
    if ("".equalsIgnoreCase(filePath) && filePath.length() == 0) {
        return "图片路径为空!";
    }
    try {
        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filePath));
        LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
        Binarizer binarizer = new HybridBinarizer(source);
        BinaryBitmap bitmap = new BinaryBitmap(binarizer);
        HashMap<DecodeHintType, Object> hintTypeObjectHashMap = new HashMap<>();
        hintTypeObjectHashMap.put(DecodeHintType.CHARACTER_SET, "UTF-8");
        Result result = new MultiFormatReader().decode(bitmap, hintTypeObjectHashMap);
        retStr = result.getText();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return retStr;
}

public static String decodeQr(String filePath) {
    String retStr = "";
    if ("".equalsIgnoreCase(filePath) && filePath.length() == 0) {
        return "图片路径为空!";
    }
    try {
        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filePath));
        LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
        Binarizer binarizer = new HybridBinarizer(source);
        BinaryBitmap bitmap = new BinaryBitmap(binarizer);
        HashMap<DecodeHintType, Object> hintTypeObjectHashMap = new HashMap<>();
        hintTypeObjectHashMap.put(DecodeHintType.CHARACTER_SET, "UTF-8");
        Result result = new MultiFormatReader().decode(bitmap, hintTypeObjectHashMap);
        retStr = result.getText();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return retStr;
}

/**
 * 读取二维码
 * @param qrCodeFile
 * @return
 */
public String readQrCode(File qrCodeFile){
    String ret = null;
    try {           
        QRCodeReader reader = new QRCodeReader();
        BufferedImage image = ImageIO.read(qrCodeFile);
        LuminanceSource source = new BufferedImageLuminanceSource(image);
        Binarizer binarizer = new HybridBinarizer(source);
        BinaryBitmap imageBinaryBitmap = new BinaryBitmap(binarizer);
        Result result = reader.decode(imageBinaryBitmap);
        ret = result.getText();
    } catch (IOException |NotFoundException | ChecksumException | FormatException e) {
        Exceptions.printException(e);
    }
    return ret;     
}

private static void parse() throws IOException, NotFoundException, ChecksumException, FormatException {
    BufferedImage image = ImageReader.readImage(Paths.get("d:/qr.png").toUri());
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    Binarizer bin = new HybridBinarizer(source);
    BinaryBitmap bitmap = new BinaryBitmap(bin);
    Result result = new QRCodeReader().decode(bitmap);
    System.out.println(result.toString());
}

private Bitmap binarization(Bitmap bitmap, int lowColor, int highColor) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int pixels[] = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    LuminanceSource source = new RGBLuminanceSource(width, height, pixels);
    Binarizer binarizer = new HybridBinarizer(source);

    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    try {
        BitMatrix matrix = binarizer.getBlackMatrix();
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                if (matrix.get(j, i)) {
                    result.setPixel(j, i, highColor);
                } else {
                    result.setPixel(j, i, lowColor);
                }
            }
        }
    } catch (NotFoundException e) {
        e.printStackTrace();
    }

    return result;
}

/**
     * 二值化
     *
     * @param bitmap
     * @return
     */
    private Bitmap binarization(Bitmap bitmap, int lowColor, int highStartColor, int highEndColor) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int pixels[] = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
        LuminanceSource source = new RGBLuminanceSource(width, height, pixels);
        Binarizer binarizer = new HybridBinarizer(source);

        Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

        try {
            BitMatrix matrix = binarizer.getBlackMatrix();
            int highColor;
            for (int i = 0; i < height; i++) {
//                highColor = getGradientColor(highStartColor, highEndColor, i / (float) height);
                highColor = getGradientColorByCurve(highStartColor, highEndColor, 0, height, i);
                for (int j = 0; j < width; j++) {
                    if (matrix.get(j, i)) {
                        result.setPixel(j, i, highColor);
                    } else {
                        result.setPixel(j, i, lowColor);
                    }
                }
            }
        } catch (NotFoundException e) {
            e.printStackTrace();
        }

        return result;
    }

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

public Binarizer createBinarizer(LuminanceSource source) {
    return new GlobalHistogramBinarizer(source);
}

public Binarizer createBinarizer(LuminanceSource source) {
    return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
  return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
    return new GlobalHistogramBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
    return new HybridBinarizer(source);
}

@Override
public Binarizer createBinarizer(LuminanceSource source) {
    return new GlobalHistogramBinarizer(source);
}