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copied!<p>As no one came up to answer, I tried my proposal in the comments to your question myself. A first result:</p> <pre><code>import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.IOException; import java.lang.reflect.Field; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.pdfbox.cos.COSName; import org.apache.pdfbox.pdfviewer.PageDrawer; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.common.PDRectangle; import org.apache.pdfbox.pdmodel.graphics.PDGraphicsState; import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation; import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceDictionary; import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream; public class AnnotationDrawer extends PageDrawer { public AnnotationDrawer(int imageType, int resolution) throws IOException { super(); this.imageType = imageType; this.resolution = resolution; } public Map<String, BufferedImage> convertToImages(PDPage p) throws IOException { page = p; final Map<String, BufferedImage> result = new HashMap<String, BufferedImage>(); List<PDAnnotation> annotations = page.getAnnotations(); for (PDAnnotation annotation: annotations) { String appearanceName = annotation.getAppearanceStream(); PDAppearanceDictionary appearDictionary = annotation.getAppearance(); if( appearDictionary != null ) { if( appearanceName == null ) { appearanceName = "default"; } Map<String, PDAppearanceStream> appearanceMap = appearDictionary.getNormalAppearance(); if (appearanceMap != null) { PDAppearanceStream appearance = (PDAppearanceStream)appearanceMap.get( appearanceName ); if( appearance != null ) { BufferedImage image = initializeGraphics(annotation); setTextMatrix(null); setTextLineMatrix(null); getGraphicsStack().clear(); processSubStream( page, appearance.getResources(), appearance.getStream() ); String name = annotation.getAnnotationName(); if (name == null || name.length() == 0) { name = annotation.getDictionary().getString(COSName.T); if (name == null || name.length() == 0) { name = Long.toHexString(annotation.hashCode()); } } result.put(name, image); } } } } return result; } BufferedImage initializeGraphics(PDAnnotation annotation) { PDRectangle rect = annotation.getRectangle(); float widthPt = rect.getWidth(); float heightPt = rect.getHeight(); float scaling = resolution / (float)DEFAULT_USER_SPACE_UNIT_DPI; int widthPx = Math.round(widthPt * scaling); int heightPx = Math.round(heightPt * scaling); //TODO The following reduces accuracy. It should really be a Dimension2D.Float. Dimension pageDimension = new Dimension( (int)widthPt, (int)heightPt ); BufferedImage retval = new BufferedImage( widthPx, heightPx, imageType ); Graphics2D graphics = (Graphics2D)retval.getGraphics(); graphics.setBackground( TRANSPARENT_WHITE ); graphics.clearRect( 0, 0, retval.getWidth(), retval.getHeight() ); graphics.scale( scaling, scaling ); setGraphics(graphics); pageSize = pageDimension; graphics.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON ); graphics.setRenderingHint( RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON ); setGraphicsState(new PDGraphicsState(new PDRectangle(widthPt, heightPt))); return retval; } void setGraphics(Graphics2D graphics) { try { Field field = PageDrawer.class.getDeclaredField("graphics"); field.setAccessible(true); field.set(this, graphics); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } private static final int DEFAULT_USER_SPACE_UNIT_DPI = 72; private static final Color TRANSPARENT_WHITE = new Color( 255, 255, 255, 0 ); private int imageType; private int resolution; } </code></pre> <p>If you want to render the annotations of a given <code>PDPage page,</code> you merely do:</p> <pre><code>AnnotationDrawer drawer = new AnnotationDrawer(8, 288); Map<String, BufferedImage> images = drawer.convertToImages(page); </code></pre> <p>The constructor arguments correspond to those of <code>PDPage.convertToImage(int imageType, int resolution).</code></p> <p>Beware, this has</p> <p>a. been hacked together based on PDFBox 1.8.2; it may contain version-specific code; b. merely been checked for some visible signature annotations I have here; it may be incomplete, and it may especially fail for other annotation types.</p>

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