コード例 #1
0
  public BufferedImage readTile(int imageIndex, int tileX, int tileY) throws IOException {

    int w = getWidth(imageIndex);
    int h = getHeight(imageIndex);
    int tw = getTileWidth(imageIndex);
    int th = getTileHeight(imageIndex);

    int x = tw * tileX;
    int y = th * tileY;

    if (tileX < 0 || tileY < 0 || x >= w || y >= h) {
      throw new IllegalArgumentException("Tile indices are out of bounds!");
    }

    if (x + tw > w) {
      tw = w - x;
    }

    if (y + th > h) {
      th = h - y;
    }

    ImageReadParam param = getDefaultReadParam();
    Rectangle tileRect = new Rectangle(x, y, tw, th);
    param.setSourceRegion(tileRect);

    return read(imageIndex, param);
  }
コード例 #2
0
ファイル: GeoTiffTest.java プロジェクト: bradh/imageio-ext
  /**
   * Test Writing capabilities.
   *
   * @throws FileNotFoundException
   * @throws IOException
   */
  @Test
  public void write() throws IOException, FileNotFoundException {
    if (!isGDALAvailable) {
      return;
    }
    final File outputFile = TestData.temp(this, "writetest.tif", false);
    outputFile.deleteOnExit();
    final File inputFile = TestData.file(this, "utmByte.tif");

    ImageReadParam rparam = new ImageReadParam();
    rparam.setSourceRegion(new Rectangle(1, 1, 300, 500));
    rparam.setSourceSubsampling(1, 2, 0, 0);
    ImageReader reader = new GeoTiffImageReaderSpi().createReaderInstance();
    reader.setInput(inputFile);
    final IIOMetadata metadata = reader.getImageMetadata(0);

    final ParameterBlockJAI pbjImageRead = new ParameterBlockJAI("ImageRead");
    pbjImageRead.setParameter("Input", inputFile);
    pbjImageRead.setParameter("reader", reader);
    pbjImageRead.setParameter("readParam", rparam);

    final ImageLayout l = new ImageLayout();
    l.setTileGridXOffset(0).setTileGridYOffset(0).setTileHeight(256).setTileWidth(256);

    RenderedOp image =
        JAI.create("ImageRead", pbjImageRead, new RenderingHints(JAI.KEY_IMAGE_LAYOUT, l));

    if (TestData.isInteractiveTest()) Viewer.visualizeAllInformation(image, "geotiff");

    // ////////////////////////////////////////////////////////////////
    // preparing to write
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjImageWrite = new ParameterBlockJAI("ImageWrite");
    ImageWriter writer = new GeoTiffImageWriterSpi().createWriterInstance();
    pbjImageWrite.setParameter("Output", outputFile);
    pbjImageWrite.setParameter("writer", writer);
    pbjImageWrite.setParameter("ImageMetadata", metadata);
    pbjImageWrite.setParameter("Transcode", false);
    ImageWriteParam param = new ImageWriteParam(Locale.getDefault());
    param.setSourceRegion(new Rectangle(10, 10, 100, 100));
    param.setSourceSubsampling(2, 1, 0, 0);
    pbjImageWrite.setParameter("writeParam", param);

    pbjImageWrite.addSource(image);
    final RenderedOp op = JAI.create("ImageWrite", pbjImageWrite);
    final ImageWriter writer2 =
        (ImageWriter) op.getProperty(ImageWriteDescriptor.PROPERTY_NAME_IMAGE_WRITER);
    writer2.dispose();

    // ////////////////////////////////////////////////////////////////
    // preparing to read again
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjImageReRead = new ParameterBlockJAI("ImageRead");
    pbjImageReRead.setParameter("Input", outputFile);
    pbjImageReRead.setParameter("Reader", new GeoTiffImageReaderSpi().createReaderInstance());
    final RenderedOp image2 = JAI.create("ImageRead", pbjImageReRead);
    if (TestData.isInteractiveTest()) Viewer.visualizeAllInformation(image2, "geotif2");
    else Assert.assertNotNull(image2.getTiles());
  }
コード例 #3
0
ファイル: ImageUtil.java プロジェクト: gahzl/bbs
 /*
  * 图片裁剪通用接口
  */
 public static void cutImage(String src, String dest, int x, int y, int w, int h)
     throws IOException {
   Iterator iterator = ImageIO.getImageReadersByFormatName("jpg");
   ImageReader reader = (ImageReader) iterator.next();
   InputStream in = new FileInputStream(src);
   ImageInputStream iis = ImageIO.createImageInputStream(in);
   reader.setInput(iis, true);
   ImageReadParam param = reader.getDefaultReadParam();
   Rectangle rect = new Rectangle(x, y, w, h);
   param.setSourceRegion(rect);
   BufferedImage bi = reader.read(0, param);
   ImageIO.write(bi, "jpg", new File(dest));
 }
コード例 #4
0
ファイル: ImageUtil.java プロジェクト: gahzl/bbs
 /*
  * 图片裁剪二分之一
  */
 public static void cutHalfImage(String src, String dest) throws IOException {
   Iterator iterator = ImageIO.getImageReadersByFormatName("jpg");
   ImageReader reader = (ImageReader) iterator.next();
   InputStream in = new FileInputStream(src);
   ImageInputStream iis = ImageIO.createImageInputStream(in);
   reader.setInput(iis, true);
   ImageReadParam param = reader.getDefaultReadParam();
   int imageIndex = 0;
   int width = reader.getWidth(imageIndex) / 2;
   int height = reader.getHeight(imageIndex) / 2;
   Rectangle rect = new Rectangle(width / 2, height / 2, width, height);
   param.setSourceRegion(rect);
   BufferedImage bi = reader.read(0, param);
   ImageIO.write(bi, "jpg", new File(dest));
 }
コード例 #5
0
  // This method needs to be synchronized as it updates the instance
  // variable 'tileParam'.
  public synchronized WritableRaster read(Rectangle rect) {
    // XXX Does this need to consider the subsampling offsets or is
    // that handled implicitly by the reader?
    tileParam.setSourceRegion(
        isSubsampling
            ? new Rectangle(
                subsampleX * rect.x,
                subsampleY * rect.y,
                subsampleX * rect.width,
                subsampleY * rect.height)
            : rect);

    try {
      BufferedImage bi = reader.read(imageIndex, tileParam);
      WritableRaster ras = bi.getRaster();
      return ras.createWritableChild(0, 0, ras.getWidth(), ras.getHeight(), rect.x, rect.y, null);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
コード例 #6
0
ファイル: ImageIOTest.java プロジェクト: ljx407/test
  @Test
  public void imageReadParam() throws IOException {
    Iterator<ImageReader> itr = ImageIO.getImageReadersByFormatName("jpg");
    ImageReader imageReader = itr.next();

    ImageInputStream imageInputStream = ImageIO.createImageInputStream(new File(SRCIMG));

    imageReader.setInput(imageInputStream, true);

    ImageReadParam imageReadParam = imageReader.getDefaultReadParam();
    int halfWidth = imageReader.getWidth(0) / 2;
    int halfHeight = imageReader.getHeight(0) / 2;
    Rectangle rectangle = new Rectangle(0, 0, halfWidth, halfHeight);
    imageReadParam.setSourceRegion(rectangle);

    BufferedImage bufferedImage = imageReader.read(0, imageReadParam);
    System.out.println(bufferedImage.getWidth());

    boolean result = ImageIO.write(bufferedImage, "png", new File(CONTEXT + "999.png"));
    System.out.println(result);
  }
コード例 #7
0
ファイル: ImageUtil.java プロジェクト: LXiong/zhongpai
  /**
   * 图片截取
   *
   * @param file
   * @param newName
   * @param path
   * @param x
   * @param y
   * @param width
   * @param height
   * @return author:caobo date:Oct 14, 2009 12:38:05 PM
   */
  public static File cutting(
      File file, String newName, String path, int x, int y, int width, int height) {
    ImageOutputStream out = null;
    InputStream is = null;
    ImageInputStream iis = null;
    try {
      String endName = file.getName();
      endName = endName.substring(endName.lastIndexOf(".") + 1);
      Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(endName);
      ImageReader reader = (ImageReader) readers.next();
      is = new FileInputStream(file);
      iis = ImageIO.createImageInputStream(is);
      reader.setInput(iis, true);

      ImageReadParam param = reader.getDefaultReadParam();
      Rectangle rect = new Rectangle(x, y, width, height);
      param.setSourceRegion(rect);
      BufferedImage bi = reader.read(0, param);
      File newFile = new File(path);

      if (!newFile.exists()) newFile.mkdirs();
      newFile = new File(path, newName);
      out = ImageIO.createImageOutputStream(new FileOutputStream(newFile));
      ImageIO.write(bi, endName, out);
      file = newFile;
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      try {
        iis.close();
        is.close();
        out.close();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    return file;
  }
コード例 #8
0
  /**
   * Load a specified a raster as a portion of the granule describe by this {@link
   * GranuleDescriptor}.
   *
   * @param imageReadParameters the {@link ImageReadParam} to use for reading.
   * @param index the index to use for the {@link ImageReader}.
   * @param cropBBox the bbox to use for cropping.
   * @param mosaicWorldToGrid the cropping grid to world transform.
   * @param request the incoming request to satisfy.
   * @param hints {@link Hints} to be used for creating this raster.
   * @return a specified a raster as a portion of the granule describe by this {@link
   *     GranuleDescriptor}.
   * @throws IOException in case an error occurs.
   */
  public GranuleLoadingResult loadRaster(
      final ImageReadParam imageReadParameters,
      final int index,
      final ReferencedEnvelope cropBBox,
      final MathTransform2D mosaicWorldToGrid,
      final RasterLayerRequest request,
      final Hints hints)
      throws IOException {

    if (LOGGER.isLoggable(java.util.logging.Level.FINER)) {
      final String name = Thread.currentThread().getName();
      LOGGER.finer(
          "Thread:" + name + " Loading raster data for granuleDescriptor " + this.toString());
    }
    ImageReadParam readParameters = null;
    int imageIndex;
    final ReferencedEnvelope bbox =
        inclusionGeometry != null
            ? new ReferencedEnvelope(
                granuleBBOX.intersection(inclusionGeometry.getEnvelopeInternal()),
                granuleBBOX.getCoordinateReferenceSystem())
            : granuleBBOX;
    boolean doFiltering = false;
    if (filterMe) {
      doFiltering = Utils.areaIsDifferent(inclusionGeometry, baseGridToWorld, granuleBBOX);
    }

    // intersection of this tile bound with the current crop bbox
    final ReferencedEnvelope intersection =
        new ReferencedEnvelope(
            bbox.intersection(cropBBox), cropBBox.getCoordinateReferenceSystem());
    if (intersection.isEmpty()) {
      if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
        LOGGER.fine(
            new StringBuilder("Got empty intersection for granule ")
                .append(this.toString())
                .append(" with request ")
                .append(request.toString())
                .append(" Resulting in no granule loaded: Empty result")
                .toString());
      }
      return null;
    }

    ImageInputStream inStream = null;
    ImageReader reader = null;
    try {
      //
      // get info about the raster we have to read
      //

      // get a stream
      assert cachedStreamSPI != null : "no cachedStreamSPI available!";
      inStream =
          cachedStreamSPI.createInputStreamInstance(
              granuleUrl, ImageIO.getUseCache(), ImageIO.getCacheDirectory());
      if (inStream == null) return null;

      // get a reader and try to cache the relevant SPI
      if (cachedReaderSPI == null) {
        reader = ImageIOExt.getImageioReader(inStream);
        if (reader != null) cachedReaderSPI = reader.getOriginatingProvider();
      } else reader = cachedReaderSPI.createReaderInstance();
      if (reader == null) {
        if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
          LOGGER.warning(
              new StringBuilder("Unable to get s reader for granuleDescriptor ")
                  .append(this.toString())
                  .append(" with request ")
                  .append(request.toString())
                  .append(" Resulting in no granule loaded: Empty result")
                  .toString());
        }
        return null;
      }
      // set input
      reader.setInput(inStream);

      // Checking for heterogeneous granules
      if (request.isHeterogeneousGranules()) {
        // create read parameters
        readParameters = new ImageReadParam();

        // override the overviews controller for the base layer
        imageIndex =
            ReadParamsController.setReadParams(
                request.getRequestedResolution(),
                request.getOverviewPolicy(),
                request.getDecimationPolicy(),
                readParameters,
                request.rasterManager,
                overviewsController);
      } else {
        imageIndex = index;
        readParameters = imageReadParameters;
      }

      // get selected level and base level dimensions
      final GranuleOverviewLevelDescriptor selectedlevel = getLevel(imageIndex, reader);

      // now create the crop grid to world which can be used to decide
      // which source area we need to crop in the selected level taking
      // into account the scale factors imposed by the selection of this
      // level together with the base level grid to world transformation
      AffineTransform2D cropWorldToGrid =
          new AffineTransform2D(selectedlevel.gridToWorldTransformCorner);
      cropWorldToGrid = (AffineTransform2D) cropWorldToGrid.inverse();
      // computing the crop source area which lives into the
      // selected level raster space, NOTICE that at the end we need to
      // take into account the fact that we might also decimate therefore
      // we cannot just use the crop grid to world but we need to correct
      // it.
      final Rectangle sourceArea =
          CRS.transform(cropWorldToGrid, intersection).toRectangle2D().getBounds();
      // gutter
      if (selectedlevel.baseToLevelTransform.isIdentity()) sourceArea.grow(2, 2);
      XRectangle2D.intersect(
          sourceArea,
          selectedlevel.rasterDimensions,
          sourceArea); // make sure roundings don't bother us
      // is it empty??
      if (sourceArea.isEmpty()) {
        if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
          LOGGER.fine(
              "Got empty area for granuleDescriptor "
                  + this.toString()
                  + " with request "
                  + request.toString()
                  + " Resulting in no granule loaded: Empty result");
        }
        return null;

      } else if (LOGGER.isLoggable(java.util.logging.Level.FINER)) {
        LOGGER.finer(
            "Loading level "
                + imageIndex
                + " with source region: "
                + sourceArea
                + " subsampling: "
                + readParameters.getSourceXSubsampling()
                + ","
                + readParameters.getSourceYSubsampling()
                + " for granule:"
                + granuleUrl);
      }

      // Setting subsampling
      int newSubSamplingFactor = 0;
      final String pluginName = cachedReaderSPI.getPluginClassName();
      if (pluginName != null && pluginName.equals(ImageUtilities.DIRECT_KAKADU_PLUGIN)) {
        final int ssx = readParameters.getSourceXSubsampling();
        final int ssy = readParameters.getSourceYSubsampling();
        newSubSamplingFactor = ImageIOUtilities.getSubSamplingFactor2(ssx, ssy);
        if (newSubSamplingFactor != 0) {
          if (newSubSamplingFactor > maxDecimationFactor && maxDecimationFactor != -1) {
            newSubSamplingFactor = maxDecimationFactor;
          }
          readParameters.setSourceSubsampling(newSubSamplingFactor, newSubSamplingFactor, 0, 0);
        }
      }

      // set the source region
      readParameters.setSourceRegion(sourceArea);
      final RenderedImage raster;
      try {
        // read
        raster =
            request
                .getReadType()
                .read(
                    readParameters,
                    imageIndex,
                    granuleUrl,
                    selectedlevel.rasterDimensions,
                    reader,
                    hints,
                    false);

      } catch (Throwable e) {
        if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
          LOGGER.log(
              java.util.logging.Level.FINE,
              "Unable to load raster for granuleDescriptor "
                  + this.toString()
                  + " with request "
                  + request.toString()
                  + " Resulting in no granule loaded: Empty result",
              e);
        }
        return null;
      }

      // use fixed source area
      sourceArea.setRect(readParameters.getSourceRegion());

      //
      // setting new coefficients to define a new affineTransformation
      // to be applied to the grid to world transformation
      // -----------------------------------------------------------------------------------
      //
      // With respect to the original envelope, the obtained planarImage
      // needs to be rescaled. The scaling factors are computed as the
      // ratio between the cropped source region sizes and the read
      // image sizes.
      //
      // place it in the mosaic using the coords created above;
      double decimationScaleX = ((1.0 * sourceArea.width) / raster.getWidth());
      double decimationScaleY = ((1.0 * sourceArea.height) / raster.getHeight());
      final AffineTransform decimationScaleTranform =
          XAffineTransform.getScaleInstance(decimationScaleX, decimationScaleY);

      // keep into account translation  to work into the selected level raster space
      final AffineTransform afterDecimationTranslateTranform =
          XAffineTransform.getTranslateInstance(sourceArea.x, sourceArea.y);

      // now we need to go back to the base level raster space
      final AffineTransform backToBaseLevelScaleTransform = selectedlevel.baseToLevelTransform;

      // now create the overall transform
      final AffineTransform finalRaster2Model = new AffineTransform(baseGridToWorld);
      finalRaster2Model.concatenate(CoverageUtilities.CENTER_TO_CORNER);
      final double x = finalRaster2Model.getTranslateX();
      final double y = finalRaster2Model.getTranslateY();

      if (!XAffineTransform.isIdentity(backToBaseLevelScaleTransform, Utils.AFFINE_IDENTITY_EPS))
        finalRaster2Model.concatenate(backToBaseLevelScaleTransform);
      if (!XAffineTransform.isIdentity(afterDecimationTranslateTranform, Utils.AFFINE_IDENTITY_EPS))
        finalRaster2Model.concatenate(afterDecimationTranslateTranform);
      if (!XAffineTransform.isIdentity(decimationScaleTranform, Utils.AFFINE_IDENTITY_EPS))
        finalRaster2Model.concatenate(decimationScaleTranform);

      // keep into account translation factors to place this tile
      finalRaster2Model.preConcatenate((AffineTransform) mosaicWorldToGrid);
      final Interpolation interpolation = request.getInterpolation();
      // paranoiac check to avoid that JAI freaks out when computing its internal layouT on images
      // that are too small
      Rectangle2D finalLayout =
          ImageUtilities.layoutHelper(
              raster,
              (float) finalRaster2Model.getScaleX(),
              (float) finalRaster2Model.getScaleY(),
              (float) finalRaster2Model.getTranslateX(),
              (float) finalRaster2Model.getTranslateY(),
              interpolation);
      if (finalLayout.isEmpty()) {
        if (LOGGER.isLoggable(java.util.logging.Level.INFO))
          LOGGER.info(
              "Unable to create a granuleDescriptor "
                  + this.toString()
                  + " due to jai scale bug creating a null source area");
        return null;
      }
      ROI granuleLoadingShape = null;
      if (granuleROIShape != null) {

        final Point2D translate =
            mosaicWorldToGrid.transform(new DirectPosition2D(x, y), (Point2D) null);
        AffineTransform tx2 = new AffineTransform();
        tx2.preConcatenate(
            AffineTransform.getScaleInstance(
                ((AffineTransform) mosaicWorldToGrid).getScaleX(),
                -((AffineTransform) mosaicWorldToGrid).getScaleY()));
        tx2.preConcatenate(
            AffineTransform.getScaleInstance(
                ((AffineTransform) baseGridToWorld).getScaleX(),
                -((AffineTransform) baseGridToWorld).getScaleY()));
        tx2.preConcatenate(
            AffineTransform.getTranslateInstance(translate.getX(), translate.getY()));
        granuleLoadingShape = (ROI) granuleROIShape.transform(tx2);
      }
      // apply the affine transform  conserving indexed color model
      final RenderingHints localHints =
          new RenderingHints(
              JAI.KEY_REPLACE_INDEX_COLOR_MODEL,
              interpolation instanceof InterpolationNearest ? Boolean.FALSE : Boolean.TRUE);
      if (XAffineTransform.isIdentity(finalRaster2Model, Utils.AFFINE_IDENTITY_EPS)) {
        return new GranuleLoadingResult(raster, granuleLoadingShape, granuleUrl, doFiltering);
      } else {
        //
        // In case we are asked to use certain tile dimensions we tile
        // also at this stage in case the read type is Direct since
        // buffered images comes up untiled and this can affect the
        // performances of the subsequent affine operation.
        //
        final Dimension tileDimensions = request.getTileDimensions();
        if (tileDimensions != null && request.getReadType().equals(ReadType.DIRECT_READ)) {
          final ImageLayout layout = new ImageLayout();
          layout.setTileHeight(tileDimensions.width).setTileWidth(tileDimensions.height);
          localHints.add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT, layout));
        } else {
          if (hints != null && hints.containsKey(JAI.KEY_IMAGE_LAYOUT)) {
            final Object layout = hints.get(JAI.KEY_IMAGE_LAYOUT);
            if (layout != null && layout instanceof ImageLayout) {
              localHints.add(
                  new RenderingHints(JAI.KEY_IMAGE_LAYOUT, ((ImageLayout) layout).clone()));
            }
          }
        }
        if (hints != null && hints.containsKey(JAI.KEY_TILE_CACHE)) {
          final Object cache = hints.get(JAI.KEY_TILE_CACHE);
          if (cache != null && cache instanceof TileCache)
            localHints.add(new RenderingHints(JAI.KEY_TILE_CACHE, (TileCache) cache));
        }
        if (hints != null && hints.containsKey(JAI.KEY_TILE_SCHEDULER)) {
          final Object scheduler = hints.get(JAI.KEY_TILE_SCHEDULER);
          if (scheduler != null && scheduler instanceof TileScheduler)
            localHints.add(new RenderingHints(JAI.KEY_TILE_SCHEDULER, (TileScheduler) scheduler));
        }
        boolean addBorderExtender = true;
        if (hints != null && hints.containsKey(JAI.KEY_BORDER_EXTENDER)) {
          final Object extender = hints.get(JAI.KEY_BORDER_EXTENDER);
          if (extender != null && extender instanceof BorderExtender) {
            localHints.add(new RenderingHints(JAI.KEY_BORDER_EXTENDER, (BorderExtender) extender));
            addBorderExtender = false;
          }
        }
        // border extender
        if (addBorderExtender) {
          localHints.add(ImageUtilities.BORDER_EXTENDER_HINTS);
        }
        //                boolean hasScaleX=!(Math.abs(finalRaster2Model.getScaleX()-1) <
        // 1E-2/(raster.getWidth()+1-raster.getMinX()));
        //                boolean hasScaleY=!(Math.abs(finalRaster2Model.getScaleY()-1) <
        // 1E-2/(raster.getHeight()+1-raster.getMinY()));
        //                boolean hasShearX=!(finalRaster2Model.getShearX() == 0.0);
        //                boolean hasShearY=!(finalRaster2Model.getShearY() == 0.0);
        //                boolean hasTranslateX=!(Math.abs(finalRaster2Model.getTranslateX()) <
        // 0.01F);
        //                boolean hasTranslateY=!(Math.abs(finalRaster2Model.getTranslateY()) <
        // 0.01F);
        //                boolean isTranslateXInt=!(Math.abs(finalRaster2Model.getTranslateX() -
        // (int) finalRaster2Model.getTranslateX()) <  0.01F);
        //                boolean isTranslateYInt=!(Math.abs(finalRaster2Model.getTranslateY() -
        // (int) finalRaster2Model.getTranslateY()) <  0.01F);
        //
        //                boolean isIdentity = finalRaster2Model.isIdentity() &&
        // !hasScaleX&&!hasScaleY &&!hasTranslateX&&!hasTranslateY;

        //                // TODO how can we check that the a skew is harmelss????
        //                if(isIdentity){
        //                    // TODO check if we are missing anything like tiling or such that
        // comes from hints
        //                    return new GranuleLoadingResult(raster, granuleLoadingShape,
        // granuleUrl, doFiltering);
        //                }
        //
        //                // TOLERANCE ON PIXELS SIZE
        //
        //                // Check and see if the affine transform is in fact doing
        //                // a Translate operation. That is a scale by 1 and no rotation.
        //                // In which case call translate. Note that only integer translate
        //                // is applicable. For non-integer translate we'll have to do the
        //                // affine.
        //                // If the hints contain an ImageLayout hint, we can't use
        //                // TranslateIntOpImage since it isn't capable of dealing with that.
        //                // Get ImageLayout from renderHints if any.
        //                ImageLayout layout = RIFUtil.getImageLayoutHint(localHints);
        //                if ( !hasScaleX &&
        //                     !hasScaleY  &&
        //                      !hasShearX&&
        //                      !hasShearY&&
        //                      isTranslateXInt&&
        //                      isTranslateYInt&&
        //                    layout == null) {
        //                    // It's a integer translate
        //                    return new GranuleLoadingResult(new TranslateIntOpImage(raster,
        //                                                    localHints,
        //                                                   (int) finalRaster2Model.getShearX(),
        //                                                   (int)
        // finalRaster2Model.getShearY()),granuleLoadingShape, granuleUrl, doFiltering);
        //                }

        ImageWorker iw = new ImageWorker(raster);
        iw.setRenderingHints(localHints);
        iw.affine(finalRaster2Model, interpolation, request.getBackgroundValues());
        return new GranuleLoadingResult(
            iw.getRenderedImage(), granuleLoadingShape, granuleUrl, doFiltering);
      }

    } catch (IllegalStateException e) {
      if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
        LOGGER.log(
            java.util.logging.Level.WARNING,
            new StringBuilder("Unable to load raster for granuleDescriptor ")
                .append(this.toString())
                .append(" with request ")
                .append(request.toString())
                .append(" Resulting in no granule loaded: Empty result")
                .toString(),
            e);
      }
      return null;
    } catch (org.opengis.referencing.operation.NoninvertibleTransformException e) {
      if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
        LOGGER.log(
            java.util.logging.Level.WARNING,
            new StringBuilder("Unable to load raster for granuleDescriptor ")
                .append(this.toString())
                .append(" with request ")
                .append(request.toString())
                .append(" Resulting in no granule loaded: Empty result")
                .toString(),
            e);
      }
      return null;
    } catch (TransformException e) {
      if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
        LOGGER.log(
            java.util.logging.Level.WARNING,
            new StringBuilder("Unable to load raster for granuleDescriptor ")
                .append(this.toString())
                .append(" with request ")
                .append(request.toString())
                .append(" Resulting in no granule loaded: Empty result")
                .toString(),
            e);
      }
      return null;

    } finally {
      try {
        if (request.getReadType() != ReadType.JAI_IMAGEREAD && inStream != null) {
          inStream.close();
        }
      } finally {
        if (request.getReadType() != ReadType.JAI_IMAGEREAD && reader != null) {
          reader.dispose();
        }
      }
    }
  }
コード例 #9
0
  /**
   * 根据指定坐标和长宽裁剪图片
   *
   * @param inputFilePath 源图片
   * @param outputFilePath 产生新图片路径
   * @param x x轴的开始坐标
   * @param y y轴的开始坐标
   * @param width 所裁剪的宽度
   * @param height 所裁剪的高度
   */
  public static void cut(
      String inputFilePath, String outputFilePath, int x, int y, int width, int height) {

    FileInputStream fileInputStream = null;
    ImageInputStream imageInputStream = null;
    try {
      // 获得源文件
      File inputFile = new File(inputFilePath);
      if (!inputFile.exists()) {
        logger.fatal(new FileNotFoundException());
        return;
      }

      // 读取图片文件
      fileInputStream = new FileInputStream(inputFilePath);

      String format = FileUtil.getFileSuffix(inputFilePath);
      // System.out.println(format);
      // ImageReader声称能够解码指定格式
      Iterator<ImageReader> it = ImageIO.getImageReadersByFormatName(format);
      ImageReader reader = it.next();

      // 获取图片流
      imageInputStream = ImageIO.createImageInputStream(fileInputStream);

      // 输入源中的图像将只按顺序读取
      reader.setInput(imageInputStream, true);

      // 描述如何对流进行解码
      ImageReadParam param = reader.getDefaultReadParam();

      // 图片裁剪区域
      Rectangle rect = new Rectangle(x, y, width, height);

      // 提供一个 BufferedImage,将其用作解码像素数据的目标
      param.setSourceRegion(rect);

      // 使用所提供的 ImageReadParam 读取通过索引 imageIndex 指定的对象
      BufferedImage bi = reader.read(0, param);

      // 保存新图片
      // File tempOutFile = new File(outputFilePath);
      // if (!tempOutFile.exists()) {
      // tempOutFile.mkdirs();
      // }
      ImageIO.write(bi, format, new File(outputFilePath));
    } catch (Exception e) {
      e.printStackTrace();
      logger.fatal(e);
    } finally {
      try {
        if (fileInputStream != null) {
          fileInputStream.close();
        }
        if (imageInputStream != null) {
          imageInputStream.close();
        }
      } catch (IOException e) {
        e.printStackTrace();
        logger.fatal(e);
      }
    }
  }