Question

嗨，我已经创建了一个Java服务，用于在此处使用Zxing库对图像进行解码，以便从图像中读取条形码。在这里，我面临的挑战是，如果单个条形码的文件工作正常，并且有多个条形码，则产生不相关的结果，我给出了我的代码如下。

pom.xml

<!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.4.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.4.0</version>
        </dependency>

java服务

@GetMapping(value = "OCR/GetBarcodeRead")
    @ApiOperation(value = "Get result from Barcode Zxing library")
    public String GetBarcodeRead() throws Exception {

        InputStream barCodeInputStream = new FileInputStream("images/multiple.jpg");
        BufferedImage barCodeBufferedImage = ImageIO.read(barCodeInputStream);

        LuminanceSource source = new BufferedImageLuminanceSource(barCodeBufferedImage);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Reader reader = new MultiFormatReader();
        Result result = reader.decode(bitmap);

        return result.getText();

    }

结果是这样的

CODE93

具有多个条形码的图像

我应该如何使用Zxing库读取和检索给定图像中的所有条形码？有人可以帮助我实现这一目标吗？预先感谢

解决方法

@GetMapping(value = "OCR/GetBarcodeRead")
    @ApiOperation(value = "Get result from Barcode Zxing library")
    public String GetBarcodeRead() throws Exception {

        InputStream barCodeInputStream = new FileInputStream("images/multiple.png");
        BufferedImage barCodeBufferedImage = ImageIO.read(barCodeInputStream);

        LuminanceSource source = new BufferedImageLuminanceSource(barCodeBufferedImage);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Reader reader = new MultiFormatReader();
        MultipleBarcodeReader multipleReader = new GenericMultipleBarcodeReader(reader);
        Result[] results = multipleReader.decodeMultiple(bitmap);
        //Result result = reader.decode(bitmap);

        return results.toString();

    }

工作代码

@GetMapping(value = "OCR/GetBarcodeRead")
    @ApiOperation(value = "Get result from Barcode Zxing library")
    public String GetBarcodeRead() throws Exception {



        InputStream barCodeInputStream = new FileInputStream("images/K71NM.jpg");
        BufferedImage barCodeBufferedImage = ImageIO.read(barCodeInputStream);

        LuminanceSource source = new BufferedImageLuminanceSource(barCodeBufferedImage);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        com.google.zxing.Reader reader = new MultiFormatReader();
        MultipleBarcodeReader bcReader = new GenericMultipleBarcodeReader(reader);
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        StringBuilder sb = new StringBuilder();

        for (Result result : bcReader.decodeMultiple(bitmap, hints)) {
            sb.append(result.getText()).append(" \n");
        }


        return sb.toString();

    }

Answer 1

您可以将阅读器包装到GenericMultipleBarcodeReader中，并使用decodeMultiple返回结果数组：

MultipleBarcodeReader multipleReader = new GenericMultipleBarcodeReader(reader);
Result[] results = multipleReader.decodeMultiple(bitmap);

Reference

使用Java服务中的Zxing库从单个图像文件读取多个条形码

1 个答案: