Hi everyone, First of all, thank the effort of the developers for PDFBox.
I encounter an OutOfMemory problem when rendering images in 600 dpi scanned PDF files. Here are 2 sample one-page files (with 45KB and 517 KB respectively): https://drive.google.com/open?id=0B9p0h5LPh-3FQTZ0OGhoYkpMUjg https://drive.google.com/open?id=0B9p0h5LPh-3FRUxhT0RJRl9FekE The file size is not large, but rendering it will take up more than 256Mb of the memory and throw an error. If I tell Java VM to allocate more memory by passing the -Xmx parameter, the image will be rendered successfully. (There also seems to be no problem for scanned files with 300 dpi or below.) I would like to know whether this is a known issue. Why would rendering of a small one-page scanned PDF file take up so much memory? Is there any way to get around this memory issue? The following is the error message: Exception in thread "ViewerLoadDocumentThread" java.lang.OutOfMemoryError: Java heap space at java.awt.image.DataBufferByte.<init>(DataBufferByte.java:92) at java.awt.image.ComponentSampleModel.createDataBuffer(ComponentSampleModel.java:445) at sun.awt.image.ByteInterleavedRaster.<init>(ByteInterleavedRaster.java:90) at sun.awt.image.ByteInterleavedRaster.createCompatibleWritableRaster(ByteInterleavedRaster.java:1281) at sun.awt.image.ByteInterleavedRaster.createCompatibleWritableRaster(ByteInterleavedRaster.java:1292) at org.apache.pdfbox.filter.DCTFilter.fromBGRtoRGB(DCTFilter.java:246) at org.apache.pdfbox.filter.DCTFilter.decode(DCTFilter.java:171) at org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:69) at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:162) at org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:235) at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.<init>(PDImageXObject.java:160) at org.apache.pdfbox.pdmodel.graphics.PDXObject.createXObject(PDXObject.java:70) at org.apache.pdfbox.pdmodel.PDResources.getXObject(PDResources.java:409) at org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:53) at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:486) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:460) at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:150) at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:189) at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:145) at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:68) Thanks in advance, Michael Ng
