获取ImageReader解析DICOM图像时出错 [英] Error getting ImageReader parsing DICOM image

问题描述

我尝试实现示例代码以从DicomObject获取图像：

I try to implement sample piece of code to get image from DicomObject:

import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import org.dcm4che2.data.DicomObject;
import org.dcm4che2.imageio.plugins.dcm.DicomImageReadParam;
import org.dcm4che2.io.DicomOutputStream;

....

public static BufferedImage getPixelDataAsBufferedImage(byte[] dicomData)
        throws IOException {
    ByteArrayInputStream bais = new ByteArrayInputStream(dicomData);
    BufferedImage buff = null;
    Iterator<ImageReader> iter = ImageIO.getImageReadersByFormatName("DICOM");
    ImageReader reader = (ImageReader) iter.next();
    DicomImageReadParam param = (DicomImageReadParam) reader.getDefaultReadParam();
    ImageInputStream iis = ImageIO.createImageInputStream(bais);
    reader.setInput(iis, false);
    buff = reader.read(0, param);
    iis.close();
    if (buff == null) {
        throw new IOException("Could not read Dicom file. Maybe pixel data is invalid.");
    }
    return buff;
}

ImageReader reader =（ImageReader）iter.next（）;我得到了：

When ImageReader reader = (ImageReader) iter.next(); I got:

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/media/imageio/stream/StreamSegmentMapper
at org.dcm4che2.imageioimpl.plugins.dcm.DicomImageReaderSpi.createReaderInstance(DicomImageReaderSpi.java:146)
at javax.imageio.spi.ImageReaderSpi.createReaderInstance(ImageReaderSpi.java:320)
at javax.imageio.ImageIO$ImageReaderIterator.next(ImageIO.java:529)
at javax.imageio.ImageIO$ImageReaderIterator.next(ImageIO.java:513)
at dcm4.dcmTools.loadImage(dcmTools.java:61)
at dcm4.Dcm4.main(Dcm4.java:87)
Caused by: java.lang.ClassNotFoundException: com.sun.media.imageio.stream.StreamSegmentMapper
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 6 more

有人知道这是怎么回事吗？？？我在Windows7 64上使用JDK7 64。

Does anyone knows What is wrong??? I use JDK7 64 on Windows7 64

推荐答案

给定的异常表明您对Java Advanced Imaging（JAI）具有运行时依赖性。您需要标准JDK随附的其他JAR。

The given exception indicates that you have a runtime dependency on Java Advanced Imaging (JAI). You need additional JARs not provided with the standard JDK.

以下是 JAI 和 JAI ImageIO Tools 的安装说明：

http://download.java.net/media/jai/builds/release/1_1_3/INSTALL.html#Windows

http://download.java.net/media/media/jai-imageio/builds/release /1.1/INSTALL-jai_imageio.html#Windows

您可以在此处下载安装程序：

You can download the installers here:

http://download.java.net/media/jai/builds/release / 1_1_3 /

http ：//download.java.net/media/jai-imageio/builds/release/1.1/

一旦安装了JAI，您将需要在项目类路径中包含提取的JAR。

Once you install JAI, you will need to include the extracted JARs in your project classpath.

如果使用Maven，则可以在没有安装程序的情况下将JAI和JAI ImageIO Tools用于您的项目：

If using Maven, JAI and JAI ImageIO Tools can be used for your project without installers:

<dependency>
    <groupId>com.sun.media</groupId>
    <artifactId>jai_imageio</artifactId>
    <version>1.1</version>
</dependency>

这篇关于获取ImageReader解析DICOM图像时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！