将DICOM图像转换为jpeg图像

我的代码是

import java.awt.image.BufferedImage; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Iterator; import javax.imageio.ImageIO; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import org.dcm4che2.imageio.plugins.dcm.DicomImageReadParam; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class DicomToJpeg { public static void main(String args[]) throws IOException, Exception { dicomToJpeg("d:/F74AFBC7"); } public static void dicomToJpeg(String args) throws IOException, Exception { // TODO Auto-generated method stub try { File myDicomFile = new File(args); BufferedImage myJpegImage = null; Iterator iter = ImageIO.getImageReadersByFormatName("DICOM"); ImageReader reader = (ImageReader) iter.next(); DicomImageReadParam param = null; try{ param = (DicomImageReadParam) reader.getDefaultReadParam(); } catch (Exception e) { e.printStackTrace(); } ImageInputStream iis=ImageIO.createImageInputStream(myDicomFile); reader.setInput(iis, false); myJpegImage = reader.read(0, param); iis.close(); if (myJpegImage == null) { System.out.println("\nError: couldn't read dicom image!"); return; } File myJpegFile = new File("d:/demo.jpg"); OutputStream output = new BufferedOutputStream(new FileOutputStream(myJpegFile)); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output); encoder.encode(myJpegImage); System.out.println("Image Create successufully"); output.close(); } catch(IOException e){ System.out.println("\nError: couldn't read dicom image!"+ e.getMessage()); return; } } } 

当我使用eclipse在java项目中执行它工作正常…但是当我使用Web应用程序执行时，我在控制器页面中调用它

DicomToJpeg.dicomToJpeg（ “d：/ F74AFBC7”）;

然后它给出了像…的错误

 java.util.NoSuchElementException at javax.imageio.spi.FilterIterator.next(Unknown Source) at javax.imageio.ImageIO$ImageReaderIterator.next(Unknown Source) at javax.imageio.ImageIO$ImageReaderIterator.next(Unknown Source) at com.lifecare.controller.DicomToJpeg.dicomToJpeg(DicomToJpeg.java:32) 

如何解决这个错误请帮帮我….

Answer 1

ImageIO.getImageREadersByFormatName的javadoc说：

返回包含所有当前已注册的ImageReader的Iterator，这些ImageReader声称能够解码指定的格式。

如果访问迭代器而不检查它是否有元素，则会出现exception。

由于它在您的IDE中而不是在服务器上运行，因此您可以查看DICOM的图像读取器是否位于服务器上的应用程序类路径中。

但是，我也想知道你怎么称呼上述课程。 它来自servlet吗？

Answer 2

我通过在ImageIO.getImageReadersByFormatName（）之前调用ImageIO.scanForPlugins（）来解决它

 ImageIO.scanForPlugins() Iterator iter = ImageIO.getImageReadersByFormatName("DICOM"); ImageReader reader = (ImageReader) iter.next(); 

这适用于servlet

Answer 3

试试这样吧

 BufferImage bi = ImageIO.read(dcm file name with path); ImageIO.write(enter pathname with filename, format); 

Answer 4

 import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.DataInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.Enumeration; import java.util.List; import java.util.Properties; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.OptionBuilder; import org.apache.commons.cli.Options; import org.apache.commons.cli.ParseException; import org.apache.commons.cli.PosixParser; import org.dcm4che2.data.BasicDicomObject; import org.dcm4che2.data.DicomObject; import org.dcm4che2.data.Tag; import org.dcm4che2.data.UID; import org.dcm4che2.data.VR; import org.dcm4che2.io.DicomOutputStream; import org.dcm4che2.util.UIDUtils; public class Jpg2Dcm { private static final String USAGE = "jpg2dcm [Options]  "; private static final String DESCRIPTION = "Encapsulate JPEG Image into DICOM Object.\nOptions:"; private static final String EXAMPLE = "--\nExample 1: Encapulate JPEG Image verbatim with default values " + "for mandatory DICOM attributes into DICOM Secondary Capture Image:" + "\n$ jpg2dcm image.jpg image.dcm" + "\n--\nExample 2: Encapulate JPEG Image without application segments " + "and additional DICOM attributes to mandatory defaults into DICOM " + "Image Object:" + "\n$ jpg2dcm --no-appn -c patattrs.cfg homer.jpg image.dcm" + "\n--\nExample 3: Encapulate MPEG2 Video with specified DICOM " + "attributes into DICOM Video Object:" + "\n$ jpg2dcm --mpeg -C mpg2dcm.cfg video.mpg video.dcm"; private static final String LONG_OPT_CHARSET = "charset"; private static final String OPT_CHARSET_DESC = "Specific Character Set code string, ISO_IR 100 by default"; private static final String OPT_AUGMENT_CONFIG_DESC = "Specifies DICOM attributes included additional to mandatory defaults"; private static final String OPT_REPLACE_CONFIG_DESC = "Specifies DICOM attributes included instead of mandatory defaults"; private static final String LONG_OPT_TRANSFER_SYNTAX = "transfer-syntax"; private static final String OPT_TRANSFER_SYNTAX_DESC = "Transfer Syntax; 1.2.840.10008.1.2.4.50 (JPEG Baseline) by default."; private static final String LONG_OPT_MPEG = "mpeg"; private static final String OPT_MPEG_DESC = "Same as --transfer-syntax 1.2.840.10008.1.2.4.100 (MPEG2)."; private static final String LONG_OPT_UID_PREFIX = "uid-prefix"; private static final String OPT_UID_PREFIX_DESC = "Generate UIDs with given prefix, 1.2.40.0.13.1. by default."; private static final String LONG_OPT_NO_APPN = "no-appn"; private static final String OPT_NO_APPN_DESC = "Exclude application segments APPn from JPEG stream; " + "encapsulate JPEG stream verbatim by default."; private static final String OPT_HELP_DESC = "Print this message"; private static final String OPT_VERSION_DESC = "Print the version information and exit"; private static int FF = 0xff; private static int SOF = 0xc0; private static int DHT = 0xc4; private static int DAC = 0xcc; private static int SOI = 0xd8; private static int SOS = 0xda; private static int APP = 0xe0; private String charset = "ISO_IR 100"; private String transferSyntax = UID.JPEGBaseline1; private byte[] buffer = new byte[8192]; private int jpgHeaderLen; private int jpgLen; private boolean noAPPn = false; private Properties cfg = new Properties(); public Jpg2Dcm() { try { cfg.load(Jpg2Dcm.class.getResourceAsStream("jpg2dcm.cfg")); } catch (Exception e) { throw new RuntimeException(e); } } public final void setCharset(String charset) { this.charset = charset; } private final void setTransferSyntax(String uid) { this.transferSyntax = uid; } private final void setNoAPPn(boolean noAPPn) { this.noAPPn = noAPPn; } private void loadConfiguration(File cfgFile, boolean augment) throws IOException { Properties tmp = augment ? new Properties(cfg) : new Properties(); InputStream in = new BufferedInputStream(new FileInputStream(cfgFile)); try { tmp.load(in); } finally { in.close(); } cfg = tmp; } public void convert(File jpgFile, File dcmFile) throws IOException { jpgHeaderLen = 0; jpgLen = (int) jpgFile.length(); DataInputStream jpgInput = new DataInputStream( new BufferedInputStream(new FileInputStream(jpgFile))); try { DicomObject attrs = new BasicDicomObject(); attrs.putString(Tag.SpecificCharacterSet, VR.CS, charset); for (Enumeration en = cfg.propertyNames(); en.hasMoreElements();) { String key = (String) en.nextElement(); int[] tagPath = Tag.toTagPath(key); int last = tagPath.length-1; VR vr = attrs.vrOf(tagPath[last]); if (vr == VR.SQ) { attrs.putSequence(tagPath); } else { attrs.putString(tagPath, vr, cfg.getProperty(key)); } } if (noAPPn || missingRowsColumnsSamplesPMI(attrs)) { readHeader(attrs, jpgInput); } ensureUS(attrs, Tag.BitsAllocated, 8); ensureUS(attrs, Tag.BitsStored, attrs.getInt(Tag.BitsAllocated)); ensureUS(attrs, Tag.HighBit, attrs.getInt(Tag.BitsStored) - 1); ensureUS(attrs, Tag.PixelRepresentation, 0); ensureUID(attrs, Tag.StudyInstanceUID); ensureUID(attrs, Tag.SeriesInstanceUID); ensureUID(attrs, Tag.SOPInstanceUID); Date now = new Date(); attrs.putDate(Tag.InstanceCreationDate, VR.DA, now); attrs.putDate(Tag.InstanceCreationTime, VR.TM, now); attrs.initFileMetaInformation(transferSyntax); FileOutputStream fos = new FileOutputStream(dcmFile); BufferedOutputStream bos = new BufferedOutputStream(fos); DicomOutputStream dos = new DicomOutputStream(bos); try { dos.writeDicomFile(attrs); dos.writeHeader(Tag.PixelData, VR.OB, -1); dos.writeHeader(Tag.Item, null, 0); dos.writeHeader(Tag.Item, null, (jpgLen+1)&~1); dos.write(buffer, 0, jpgHeaderLen); int r; while ((r = jpgInput.read(buffer)) > 0) { dos.write(buffer, 0, r); } if ((jpgLen&1) != 0) { dos.write(0); } dos.writeHeader(Tag.SequenceDelimitationItem, null, 0); } finally { dos.close(); } } finally { jpgInput.close(); } } private boolean missingRowsColumnsSamplesPMI(DicomObject attrs) { return !(attrs.containsValue(Tag.Rows) && attrs.containsValue(Tag.Columns) && attrs.containsValue(Tag.SamplesPerPixel) && attrs.containsValue(Tag.PhotometricInterpretation) ); } private void readHeader(DicomObject attrs, DataInputStream jpgInput) throws IOException { if (jpgInput.read() != FF || jpgInput.read() != SOI || jpgInput.read() != FF) { throw new IOException( "JPEG stream does not start with FF D8 FF"); } int marker = jpgInput.read(); int segmLen; boolean seenSOF = false; buffer[0] = (byte) FF; buffer[1] = (byte) SOI; buffer[2] = (byte) FF; buffer[3] = (byte) marker; jpgHeaderLen = 4; while (marker != SOS) { segmLen = jpgInput.readUnsignedShort(); if (buffer.length < jpgHeaderLen + segmLen + 2) { growBuffer(jpgHeaderLen + segmLen + 2); } buffer[jpgHeaderLen++] = (byte) (segmLen >>> 8); buffer[jpgHeaderLen++] = (byte) segmLen; jpgInput.readFully(buffer, jpgHeaderLen, segmLen - 2); if ((marker & 0xf0) == SOF && marker != DHT && marker != DAC) { seenSOF = true; int p = buffer[jpgHeaderLen] & 0xff; int y = ((buffer[jpgHeaderLen+1] & 0xff) << 8) | (buffer[jpgHeaderLen+2] & 0xff); int x = ((buffer[jpgHeaderLen+3] & 0xff) << 8) | (buffer[jpgHeaderLen+4] & 0xff); int nf = buffer[jpgHeaderLen+5] & 0xff; attrs.putInt(Tag.SamplesPerPixel, VR.US, nf); if (nf == 3) { attrs.putString(Tag.PhotometricInterpretation, VR.CS, "YBR_FULL_422"); attrs.putInt(Tag.PlanarConfiguration, VR.US, 0); } else { attrs.putString(Tag.PhotometricInterpretation, VR.CS, "MONOCHROME2"); } attrs.putInt(Tag.Rows, VR.US, y); attrs.putInt(Tag.Columns, VR.US, x); attrs.putInt(Tag.BitsAllocated, VR.US, p > 8 ? 16 : 8); attrs.putInt(Tag.BitsStored, VR.US, p); attrs.putInt(Tag.HighBit, VR.US, p-1); attrs.putInt(Tag.PixelRepresentation, VR.US, 0); } if (noAPPn & (marker & 0xf0) == APP) { jpgLen -= segmLen + 2; jpgHeaderLen -= 4; } else { jpgHeaderLen += segmLen - 2; } if (jpgInput.read() != FF) { throw new IOException("Missing SOS segment in JPEG stream"); } marker = jpgInput.read(); buffer[jpgHeaderLen++] = (byte) FF; buffer[jpgHeaderLen++] = (byte) marker; } if (!seenSOF) { throw new IOException("Missing SOF segment in JPEG stream"); } } private void growBuffer(int minSize) { int newSize = buffer.length << 1; while (newSize < minSize) { newSize <<= 1; } byte[] tmp = new byte[newSize]; System.arraycopy(buffer, 0, tmp, 0, jpgHeaderLen); buffer = tmp; } private void ensureUID(DicomObject attrs, int tag) { if (!attrs.containsValue(tag)) { attrs.putString(tag, VR.UI, UIDUtils.createUID()); } } private void ensureUS(DicomObject attrs, int tag, int val) { if (!attrs.containsValue(tag)) { attrs.putInt(tag, VR.US, val); } } public static void main(String[] args) { try { CommandLine cl = parse(args); Jpg2Dcm jpg2Dcm = new Jpg2Dcm(); if (cl.hasOption(LONG_OPT_CHARSET)) { jpg2Dcm.setCharset(cl.getOptionValue(LONG_OPT_CHARSET)); } if (cl.hasOption("c")) { jpg2Dcm.loadConfiguration(new File(cl.getOptionValue("c")), true); } if (cl.hasOption("C")) { jpg2Dcm.loadConfiguration(new File(cl.getOptionValue("C")), false); } if (cl.hasOption(LONG_OPT_UID_PREFIX)) { UIDUtils.setRoot(cl.getOptionValue(LONG_OPT_UID_PREFIX)); } if (cl.hasOption(LONG_OPT_MPEG)) { jpg2Dcm.setTransferSyntax(UID.MPEG2); } if (cl.hasOption(LONG_OPT_TRANSFER_SYNTAX)) { jpg2Dcm.setTransferSyntax( cl.getOptionValue(LONG_OPT_TRANSFER_SYNTAX)); } jpg2Dcm.setNoAPPn(cl.hasOption(LONG_OPT_NO_APPN)); List argList = cl.getArgList(); File jpgFile = new File("d:\\VIPUL.jpg"); File dcmFile = new File("d:\\aa.dcm"); long start = System.currentTimeMillis(); jpg2Dcm.convert(jpgFile, dcmFile); long fin = System.currentTimeMillis(); System.out.println("Encapsulated " + jpgFile + " to " + dcmFile + " in " + (fin - start) + "ms."); } catch (IOException e) { e.printStackTrace(); } } private static CommandLine parse(String[] args) { Options opts = new Options(); OptionBuilder.withArgName("code"); OptionBuilder.hasArg(); OptionBuilder.withDescription(OPT_CHARSET_DESC); OptionBuilder.withLongOpt(LONG_OPT_CHARSET); opts.addOption(OptionBuilder.create()); OptionBuilder.withArgName("file"); OptionBuilder.hasArg(); OptionBuilder.withDescription(OPT_AUGMENT_CONFIG_DESC); opts.addOption(OptionBuilder.create("c")); OptionBuilder.withArgName("file"); OptionBuilder.hasArg(); OptionBuilder.withDescription(OPT_REPLACE_CONFIG_DESC); opts.addOption(OptionBuilder.create("C")); OptionBuilder.withArgName("prefix"); OptionBuilder.hasArg(); OptionBuilder.withDescription(OPT_UID_PREFIX_DESC); OptionBuilder.withLongOpt(LONG_OPT_UID_PREFIX); opts.addOption(OptionBuilder.create()); OptionBuilder.withArgName("uid"); OptionBuilder.hasArg(); OptionBuilder.withDescription(OPT_TRANSFER_SYNTAX_DESC); OptionBuilder.withLongOpt(LONG_OPT_TRANSFER_SYNTAX); opts.addOption(OptionBuilder.create()); opts.addOption(null, LONG_OPT_MPEG, false, OPT_MPEG_DESC); opts.addOption(null, LONG_OPT_NO_APPN, false, OPT_NO_APPN_DESC); opts.addOption("h", "help", false, OPT_HELP_DESC); opts.addOption("V", "version", false, OPT_VERSION_DESC); CommandLine cl = null; try { cl = new PosixParser().parse(opts, args); } catch (ParseException e) { exit("jpg2dcm: " + e.getMessage()); throw new RuntimeException("unreachable"); } if (cl.hasOption('V')) { Package p = Jpg2Dcm.class.getPackage(); System.out.println("jpg2dcm v" + p.getImplementationVersion()); System.exit(0); } if (cl.hasOption('h') || cl.getArgList().size() != 2) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(USAGE, DESCRIPTION, opts, EXAMPLE); System.exit(0); } return cl; } private static void exit(String msg) { System.err.println(msg); System.err.println("Try 'jpg2dcm -h' for more information."); System.exit(1); } } import java.io.File; import java.io.IOException; public class JPG_TO_DCM { public static void main(String[] args) { Jpg2Dcm jpg2Dcm = new Jpg2Dcm(); File jpgFileOS = new File("D:\\Demo.jpg"); File dcmFileOS = new File("D:\\Demo.dcm"); try { jpg2Dcm.convert(jpgFileOS, dcmFileOS); } catch (IOException e) { e.printStackTrace(); } } } 

请尝试使用此代码@Subhojit Das对于此代码，您下载了一些lib文件