When I try to convert certain pages of certain PDF to images I am getting error
java.lang.ClassCastException: org.apache.pdfbox.cos.COSNull cannot be cast to
org.apache.pdfbox.cos.COSDictionary
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Key: PDFBOX-1266
URL: https://issues.apache.org/jira/browse/PDFBOX-1266
Project: PDFBox
Issue Type: Bug
Components: PDModel
Affects Versions: 1.6.0
Environment: java version "1.6.0_30"
Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode)
Fedora 16 (and also Debian Squeeze) not tested on other systems
Reporter: Radim Hatlapatka
Unable to convert certain pages to images for certain PDF documents. Getting
error: java.lang.ClassCastException: org.apache.pdfbox.cos.COSNull cannot be
cast to org.apache.pdfbox.cos.COSDictionary
method for converting page is called this way: BufferedImage image =
page.convertToImage(BufferedImage.TYPE_3BYTE_BGR, 300); // where page is of
type org.apache.pdfbox.pdmodel.PDPage
Full stacktrace (of relevant part):
java.lang.ClassCastException: org.apache.pdfbox.cos.COSNull cannot be cast to
org.apache.pdfbox.cos.COSDictionary
at
org.apache.pdfbox.pdmodel.graphics.xobject.PDCcitt.getRGBImage(PDCcitt.java:119)
at
org.apache.pdfbox.util.operator.pagedrawer.Invoke.process(Invoke.java:78)
at
org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:551)
at
org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:274)
at
org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
at
org.apache.pdfbox.util.operator.pagedrawer.Invoke.process(Invoke.java:130)
at
org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:551)
at
org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:274)
at
org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
at
org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:225)
at org.apache.pdfbox.pdfviewer.PageDrawer.drawPage(PageDrawer.java:107)
at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:722)
at
eu.eudml.enhancement.pdf2textviaocr.PdfImageExtractor.extractImagesUsingPdfParser(PdfImageExtractor.java:236)
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