convert to Jpeg a compressed DICOM image

[Thanasis Iliopoulos]

Hi to the group!

i am converting my DICOM images to Jpeg using Dcm2Jpg utility class, however recently i faced the case where i need to convert some compressed DICOM images to Jpeg.

My code:

public void convertDcmToJpeg(File dcmObjFile, File jpgFile) throws IOException {

    Dcm2Jpg dcm2Jpg = new Dcm2Jpg();

    log.info("converting: " + dcmObjFile.getName() + " to jpeg: " + jpgFile.getName());

    try {

                dcm2Jpg.convert(dcmObjFile, jpgFile);

    }

    ...

}

where Dcm2Jpg is the original dcm4che utility class. The process fails on the two red/bold lines: 

public void convert(File src, File dest) throws IOException {

        log.info("file to be created: " + dest.getAbsolutePath());

        Iterator<ImageReader> iter = ImageIO.getImageReadersByFormatName("DICOM");

        ImageReader reader = iter.next();

        DicomImageReadParam param = 

            (DicomImageReadParam) reader.getDefaultReadParam();

        param.setWindowCenter(center);

        param.setWindowWidth(width);

        param.setVoiLutFunction(vlutFct);

        param.setPresentationState(prState);

        param.setPValue2Gray(pval2gray);

        param.setAutoWindowing(autoWindowing);

        ImageInputStream iis = ImageIO.createImageInputStream(src);

        BufferedImage bi;  

        try {

            reader.setInput(iis, false);

            bi = reader.read(frame - 1, param);

            if (bi == null) {

                log.info("\nError: " + src + " - couldn't read!");

                return;

            }

            encodeByImageIO(bi, dest);

        } finally {

            CloseUtils.safeClose(iis);

        }

        log.info('.');

}

and the exception i get:

org.dcm4che2.data.ConfigurationError: No Image Reader of class com.sun.media.imageioimpl.plugins.jpeg.CLibJPEGImageReader available for format:jpeg

at org.dcm4che2.imageio.ImageReaderFactory.getReaderForTransferSyntax(ImageReaderFactory.java:99)

at org.dcm4che2.imageioimpl.plugins.dcm.DicomImageReader.initCompressedImageReader(DicomImageReader.java:410)

at org.dcm4che2.imageioimpl.plugins.dcm.DicomImageReader.initImageReader(DicomImageReader.java:395)

at org.dcm4che2.imageioimpl.plugins.dcm.DicomImageReader.read(DicomImageReader.java:636)

at b.e.a(Dcm2Jpg.java:179)

at l.i.a(ProcessDicomFiles.java:2020)

at l.i.b(ProcessDicomFiles.java:1992)

at l.i.j(ProcessDicomFiles.java:1626)

at g.a.execute(MainJob.java:87)

at org.quartz.core.JobRunShell.run(JobRunShell.java:202)

at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)

So, i am wondering how could i convert to JPEG compressed DICOM images. Do i have first have to de-compressed using the utility class Dcm2Dcm? If yes is there any examples... Which method of this class can be used for de-compressing DICOM images?

Any other parameters or details about dicom image decompression that i would need to know about?

Thanks in advace for you time!

[sd...@rad365.com]

Hi Thanasis,

I also faced same problem. You need to install JAI & JAI IO in your system and it'll work fine. 

[Dimitri Pianeta]

Hi Thanasis,

For java 7, http://docs.geoserver.org/stable/en/user/production/java.html

For java 8 isn't solver for imagei and JAI.

[Dave Franken]

What's important here is that the directory the clib_jiio.dll (for Windows) is in is actually added to your PATH (which makes Java add it to its library paths), not your CLASSPATH.

[Thanasis Iliopoulos]

Hi again ...

I have installed JAI/JAI-IO in my system and i think i am including all the necessary jar files in my project ...

However i keep receiving this error ... Can not convert a compressed dicom file (JPGLossless) to JPG ...

Below is my system / project info:

OS: Windows 64-bit

Java: 1.8.0_60 (JDK/JRE)

Jar files in my project (relative to JAI):

dcm4che-core-2.0.29.jar

dcm4che-image-2.0.29.jar

dcm4che-imageio-2.0.29.jar

dcm4che-imageio-rle-2.0.29.jar

jai-imageio.jar

clibwrapper_jiio.jar

jai-core.jar

jai-codec.jar

I have also included to PATH directory to which clib_jiio.dll is located ...

Am i missing anything?

Thanks

[Thanasis Iliopoulos]

Maybee this is the case?

http://stackoverflow.com/questions/25529930/dcm4che3-with-jai-imageio-1-1-gives-codeclib-error-or-com-sun-media-imageioimpl

First make sure you use 32 bit JVM on your Spring Framework Java Application.

C:\Program Files (x86)\Java\jdk1.7.0\jre\bin

So is this due to the fact that i use 64bit JDK for my project? 

I have the issue mentioned above only for "jpegloss" dicom compressed files. 

On Tuesday, 15 December 2015 17:06:05 UTC+2, Thanasis Iliopoulos wrote: