コード例 #1
0
  @Test
  public void lossless() throws Exception {
    File f = File.createTempFile("test-jpeg2000-lossless", ".jp2");
    f.deleteOnExit();
    Iterator<ImageWriter> writers = ImageIO.getImageWritersBySuffix("jp2");
    assertTrue(writers.hasNext());
    ImageWriter writer = writers.next();
    J2KImageWriteParam writeParams = (J2KImageWriteParam) writer.getDefaultWriteParam();
    writeParams.setLossless(true);
    //        writeParams.setFilter(J2KImageWriteParam.FILTER_53);
    //        writeParams.setEncodingRate(64.0f);
    //        writeParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    //        writeParams.setCompressionType("JPEG2000");
    //        writeParams.setCompressionQuality(1.0f);

    ImageOutputStream ios = ImageIO.createImageOutputStream(f);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(image, null, null), writeParams);
    writer.dispose();
    ios.close();
    assertTrue("Expected file size > 128kB", f.length() > 128 * 1024);
    // System.out.println(f.length());
    BufferedImage read = ImageIO.read(f);
    assertEquals(SIZE, read.getWidth());
  }
コード例 #2
0
  /** Constructor to set locales. */
  public J2KImageWriteParamJava(IIOImage image, ImageWriteParam param) {
    super(param.getLocale());
    if (image != null) {
      if (image.hasRaster()) setDefaults(image.getRaster());
      else setDefaults(image.getRenderedImage());
    }

    setSourceRegion(param.getSourceRegion());
    setSourceBands(param.getSourceBands());
    try {
      setTiling(
          param.getTileWidth(), param.getTileHeight(),
          param.getTileGridXOffset(), param.getTileGridYOffset());
    } catch (IllegalStateException e) {
      // tileing is not set do nothing.
    }

    setDestinationOffset(param.getDestinationOffset());
    setSourceSubsampling(
        param.getSourceXSubsampling(),
        param.getSourceYSubsampling(),
        param.getSubsamplingXOffset(),
        param.getSubsamplingYOffset());
    setDestinationType(param.getDestinationType());

    J2KImageWriteParam j2kParam;
    if (param instanceof J2KImageWriteParam) {
      j2kParam = (J2KImageWriteParam) param;
    } else {
      j2kParam = new J2KImageWriteParam();
    }

    setDecompositionLevel("" + j2kParam.getNumDecompositionLevels());
    setEncodingRate(j2kParam.getEncodingRate());
    setLossless(j2kParam.getLossless());
    setFilters(j2kParam.getFilter());
    setEPH("" + j2kParam.getEPH());
    setSOP("" + j2kParam.getSOP());
    setProgressionName(j2kParam.getProgressionType());
    int[] size = j2kParam.getCodeBlockSize();
    setCodeBlockSize("" + size[0] + " " + size[1]);
    enableCT = j2kParam.getComponentTransformation();
    setComponentTransformation("" + enableCT);
  }