List of usage examples for javax.imageio ImageReadParam ImageReadParam
public ImageReadParam()
From source file:org.geotools.gce.imagemosaic.GranuleDescriptor.java
/** * 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. *//*ww w . java 2 s. co m*/ 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 boolean useFootprint = roiProvider != null && request.getFootprintBehavior() != FootprintBehavior.None; Geometry inclusionGeometry = useFootprint ? roiProvider.getFootprint() : null; final ReferencedEnvelope bbox = useFootprint ? new ReferencedEnvelope(granuleBBOX.intersection(inclusionGeometry.getEnvelopeInternal()), granuleBBOX.getCoordinateReferenceSystem()) : granuleBBOX; boolean doFiltering = false; if (filterMe && useFootprint) { 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; } // check if the requested bbox intersects or overlaps the requested area if (useFootprint && inclusionGeometry != null && !JTS.toGeometry(cropBBox).intersects(inclusionGeometry)) { 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 customizeReaderInitialization(reader, hints); 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.spatialRequestHelper.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); 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); 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); // adjust roi if (useFootprint) { ROIGeometry transformed; try { transformed = roiProvider.getTransformedROI(finalRaster2Model.createInverse()); if (transformed.getAsGeometry().isEmpty()) { // inset might have killed the geometry fully return null; } PlanarImage pi = PlanarImage.wrapRenderedImage(raster); if (!transformed.intersects(pi.getBounds())) { return null; } pi.setProperty("ROI", transformed); raster = pi; } catch (NoninvertibleTransformException e) { if (LOGGER.isLoggable(java.util.logging.Level.INFO)) LOGGER.info("Unable to create a granuleDescriptor " + this.toString() + " due to a problem when managing the ROI"); return null; } } // 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; } // 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, null, granuleUrl, doFiltering, pamDataset); } 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); } ImageWorker iw = new ImageWorker(raster); iw.setRenderingHints(localHints); iw.affine(finalRaster2Model, interpolation, request.getBackgroundValues()); return new GranuleLoadingResult(iw.getRenderedImage(), null, granuleUrl, doFiltering, pamDataset); } } 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(); } } } }
From source file:org.geotools.gce.imagemosaic.OverviewsControllerTest.java
/** * Tests the {@link OverviewsController} with support for different * resolutions/different number of overviews. * //from w ww .j a v a 2 s . c om * world_a.tif => Pixel Size = (0.833333333333333,-0.833333333333333); 4 overviews * world_b.tif => Pixel Size = (1.406250000000000,-1.406250000000000); 2 overviews * * @throws IOException * @throws MismatchedDimensionException * @throws FactoryException * @throws TransformException */ @Test public void testHeterogeneousGranules() throws IOException, MismatchedDimensionException, FactoryException, TransformException { // // // // Initialize mosaic variables // // // final AbstractGridFormat format = getFormat(heterogeneousGranulesURL); final ImageMosaicReader reader = getReader(heterogeneousGranulesURL, format); final int nOv = reader.getNumberOfOvervies(); final double[] hRes = reader.getHighestRes(); final RasterManager rasterManager = new RasterManager(reader); // // // // Initialize granules related variables // // // final File g1File = new File(DataUtilities.urlToFile(heterogeneousGranulesURL), "world_a.tif"); final File g2File = new File(DataUtilities.urlToFile(heterogeneousGranulesURL), "world_b.tif"); final ImageReadParam readParamsG1 = new ImageReadParam(); final ImageReadParam readParamsG2 = new ImageReadParam(); int imageIndexG1 = 0; int imageIndexG2 = 0; final GranuleDescriptor granuleDescriptor1 = new GranuleDescriptor(g1File.getAbsolutePath(), TEST_BBOX_A, spi, (Geometry) null, true); final GranuleDescriptor granuleDescriptor2 = new GranuleDescriptor(g2File.getAbsolutePath(), TEST_BBOX_B, spi, (Geometry) null, true); assertNotNull(granuleDescriptor1.toString()); assertNotNull(granuleDescriptor2.toString()); final OverviewsController ovControllerG1 = granuleDescriptor1.overviewsController; final OverviewsController ovControllerG2 = granuleDescriptor2.overviewsController; // // // // Initializing read request // // // final GeneralEnvelope envelope = reader.getOriginalEnvelope(); final GridEnvelope originalRange = reader.getOriginalGridRange(); final Rectangle rasterArea = new Rectangle(0, 0, (int) Math.ceil(originalRange.getSpan(0) / 9.0), (int) Math.ceil(originalRange.getSpan(1) / 9.0)); final GridEnvelope2D range = new GridEnvelope2D(rasterArea); final GridToEnvelopeMapper geMapper = new GridToEnvelopeMapper(range, envelope); geMapper.setPixelAnchor(PixelInCell.CELL_CENTER); final AffineTransform gridToWorld = geMapper.createAffineTransform(); final double requestedResolution[] = new double[] { XAffineTransform.getScaleX0(gridToWorld), XAffineTransform.getScaleY0(gridToWorld) }; TestSet at = null; if (nOv == 4 && Math.abs(hRes[0] - 0.833333333333) <= THRESHOLD) { at = at1; } else if (nOv == 2 && Math.abs(hRes[0] - 1.40625) <= THRESHOLD) { at = at2; } else { return; } // // // // Starting OverviewsController tests // // // final OverviewPolicy[] ovPolicies = new OverviewPolicy[] { OverviewPolicy.QUALITY, OverviewPolicy.SPEED, OverviewPolicy.NEAREST, OverviewPolicy.IGNORE }; for (int i = 0; i < ovPolicies.length; i++) { OverviewPolicy ovPolicy = ovPolicies[i]; LOGGER.info("Testing with OverviewPolicy = " + ovPolicy.toString()); imageIndexG1 = ReadParamsController.setReadParams(requestedResolution, ovPolicy, DecimationPolicy.ALLOW, readParamsG1, rasterManager, ovControllerG1); imageIndexG2 = ReadParamsController.setReadParams(requestedResolution, ovPolicy, DecimationPolicy.ALLOW, readParamsG2, rasterManager, ovControllerG2); assertSame(at.ot[i].g1.imageIndex, imageIndexG1); assertSame(at.ot[i].g2.imageIndex, imageIndexG2); assertSame(at.ot[i].g1.ssx, readParamsG1.getSourceXSubsampling()); assertSame(at.ot[i].g1.ssy, readParamsG1.getSourceYSubsampling()); assertSame(at.ot[i].g2.ssx, readParamsG2.getSourceXSubsampling()); assertSame(at.ot[i].g2.ssy, readParamsG2.getSourceYSubsampling()); } }
From source file:org.geotools.gce.imagepyramid.ImagePyramidReader.java
/** * This method loads the tiles which overlap the requested envelope using * the provided values for alpha and input ROI. * //from w ww .j a v a 2s .c o m * @param requestedEnvelope * @param alpha * @param alphaThreshold * @param singleImageROI * @param singleImageROIThreshold * @param dim * @param overviewPolicy * @param ggParam * @return A {@link GridCoverage}, well actually a {@link GridCoverage2D}. * @throws TransformException * @throws IOException * @throws IOException * @throws FileNotFoundException * @throws IllegalArgumentException * @throws FactoryRegistryException */ private GridCoverage2D loadRequestedTiles(GeneralEnvelope requestedEnvelope, Rectangle dim, GeneralParameterValue[] params, OverviewPolicy overviewPolicy) throws TransformException, IOException { // if we get here we have something to load // // compute the requested resolution // final ImageReadParam readP = new ImageReadParam(); Integer imageChoice = 0; if (dim != null) imageChoice = setReadParams(overviewPolicy, readP, requestedEnvelope, dim); // // Check to have the needed reader in memory // // light check to see if this reader had been disposed, not synching for performance. if (readers == null) { throw new IllegalStateException("This ImagePyramidReader has already been disposed"); } ImageMosaicReader reader = readers.get(imageChoice); if (reader == null) { // // we must create the underlying mosaic // final String levelDirName = levelsDirs[imageChoice.intValue()]; final URL parentUrl = DataUtilities.getParentUrl(sourceURL); // look for a shapefile first final String extension = new StringBuilder(levelDirName).append("/").append(coverageName).append(".shp") .toString(); final URL shpFileUrl = DataUtilities.extendURL(parentUrl, extension); if (shpFileUrl.getProtocol() != null && shpFileUrl.getProtocol().equalsIgnoreCase("file") && !DataUtilities.urlToFile(shpFileUrl).exists()) reader = new ImageMosaicReader(DataUtilities.extendURL(parentUrl, levelDirName), hints); else reader = new ImageMosaicReader(shpFileUrl, hints); final ImageMosaicReader putByOtherThreadJustNow = readers.putIfAbsent(imageChoice, reader); if (putByOtherThreadJustNow != null) { // some other thread just did inserted this try { reader.dispose(); } catch (Exception e) { if (LOGGER.isLoggable(Level.FINE)) { LOGGER.log(Level.FINE, e.getLocalizedMessage(), e); } } //use the other one reader = putByOtherThreadJustNow; } } // // Abusing of the created ImageMosaicreader for getting a // gridcoverage2d, then rename it // GridCoverage2D mosaicCoverage = reader.read(params); if (mosaicCoverage != null) { return new GridCoverage2D(coverageName, mosaicCoverage); } else { // the mosaic can still return null in corner cases, handle that gracefully return null; } }