dcm4che 把dcm 解析为jpg 文件

package com.testone; 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.ImageReadParam; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import org.dcm4che3.data.Attributes; import org.dcm4che3.imageio.plugins.dcm.DicomImageReadParam; import org.dcm4che3.util.SafeClose; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class Dcm2jpgIOStreamOutput { private final ImageReader imageReader = ImageIO.getImageReadersByFormatName("DICOM").next(); private float windowCenter; private float windowWidth; private boolean autoWindowing = true; private int windowIndex; private int voiLUTIndex; private boolean preferWindow = true; private Attributes prState; private int overlayActivationMask = 0xffff; private int overlayGrayscaleValue = 0xffff; private int frame = 1; public int getFrame() { return frame; } public void setFrame(int frame) { this.frame = frame; } public void setWindowCenter(float windowCenter) { this.windowCenter = windowCenter; } public void setWindowWidth(float windowWidth) { this.windowWidth = windowWidth; } public void setAutoWindowing(boolean autoWindowing) { this.autoWindowing = autoWindowing; } public void setWindowIndex(int windowIndex) { this.windowIndex = windowIndex; } public void setVoiLUTIndex(int voiLUTIndex) { this.voiLUTIndex = voiLUTIndex; } public void setPreferWindow(boolean preferWindow) { this.preferWindow = preferWindow; } public void setPrState(Attributes prState) { this.prState = prState; } public void setOverlayActivationMask(int overlayActivationMask) { this.overlayActivationMask = overlayActivationMask; } public void setOverlayGrayscaleValue(int overlayGrayscaleValue) { this.overlayGrayscaleValue = overlayGrayscaleValue; } public void convert(File src, File dest) throws IOException{ Iterator<ImageReader> iter = ImageIO.getImageReadersByFormatName("DICOM"); ImageReader reader = iter.next(); ImageInputStream iis = ImageIO.createImageInputStream(src); BufferedImage bi; OutputStream out = null; try{ reader.setInput(iis, false); bi = readImage(iis); if (bi == null) { System.out.println("\nError: " + src + " - couldn't read!"); return; } out = new BufferedOutputStream(new FileOutputStream(dest)); JPEGImageEncoder enc = JPEGCodec.createJPEGEncoder(out); //这里也可以使用流将图像导出到web应用，用来搭建web版的PACS等。 enc.encode(bi); }finally{ SafeClose.close(iis); SafeClose.close(out); } } private ImageReadParam readParam(){ DicomImageReadParam param = (DicomImageReadParam) imageReader.getDefaultReadParam(); param.setWindowCenter(windowCenter); param.setWindowWidth(windowWidth); param.setAutoWindowing(autoWindowing); param.setWindowIndex(windowIndex); param.setVOILUTIndex(voiLUTIndex); param.setPreferWindow(preferWindow); param.setPresentationState(prState); param.setOverlayActivationMask(overlayActivationMask); param.setOverlayGrayscaleValue(overlayGrayscaleValue); return param; } private BufferedImage readImage(ImageInputStream iis) throws IOException{ imageReader.setInput(iis); return imageReader.read(frame -1, readParam()); } }