使用java服务中的Zxing库从单个图像文件中读取多个条码 [英] Read multiple barcodes from single image file using Zxing library in java service

问题描述

我已经创建了一个 java 服务，用于从这里读取图像中的条码，我使用 Zxing 库在此处解码文本 挑战是，如果一个带有单个条码的文件工作正常，如果有多个条码，它会产生不相关的结果，我给出了我的代码如下.

Hi i have created a java service for reading the barcode from image here iam using Zxing library for decoding the text here the challenge is if a file with single barcode it's working fine if there are multiple barcodes it's producing irrelevant result i have given my code below.

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

带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可用条码?有人可以帮助我实现这一目标吗?提前致谢

How should i read and retrieve all the barcodes available in the given image using Zxing library? Could some one help me to achieve this? thanks in advance

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();

    }

推荐答案

你可以将你的阅读器包装成一个 GenericMultipleBarcodeReader 并使用 decodeMultiple 返回一个结果数组:

You can wrap your reader into a GenericMultipleBarcodeReader and use decodeMultiple that returns an array of results:

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

参考

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