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https://issues.apache.org/jira/browse/TIKA-1729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14728962#comment-14728962
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Tim Allison edited comment on TIKA-1729 at 9/3/15 2:10 PM:
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Right, -we haven't integrated OCR with PDF files yet. You can do this now by
extracting the image files (see ExtractEmbeddedFiles in tika-example) and then
running OCR on each, but I agree that we should eventually add this capability.-
Wait, no, this is wrong. We have a unit test for the file you attached, duh.
We should be handling images embedded within pdfs.
was (Author: [email protected]):
Right, we haven't integrated OCR with PDF files yet. You can do this now by
extracting the image files (see ExtractEmbeddedFiles in tika-example) and then
running OCR on each, but I agree that we should eventually add this capability.
> OCR in PDF files
> ----------------
>
> Key: TIKA-1729
> URL: https://issues.apache.org/jira/browse/TIKA-1729
> Project: Tika
> Issue Type: Improvement
> Components: config, parser
> Affects Versions: 1.9, 1.10
> Environment: Windows 7, 64-bit, JDK 1.8.0_51 64-bit
> Windows 10, 64-bit, JDK 1.8.0_51 32-bit
> Reporter: Loris Bachert
> Labels: java, ocr, parser, pdf
>
> As described in this
> [stackoverflow-post|http://stackoverflow.com/questions/32354209/apache-tika-extract-scanned-pdf-files]
> i'm having troubles extracting text out of scanned PDF files. By scanned PDF
> files i mean PDF files that consist only of images. Because each page is an
> image i can't extract them using a custom ParsingEmbeddedDocumentExtractor. I
> also tried using the setExtractInlineImages method of the PDFParserConfig but
> this didn't work aswell.
> There was already a [ticket|https://issues.apache.org/jira/browse/TIKA-93]
> regarding the OCR support and including the [PDF
> file|https://issues.apache.org/jira/secure/attachment/12627866/testOCR.pdf]
> i'm using for my tests.
> Here is a JUnit-test about my issue:
> {code:title=PDFOCRTest.java|borderStyle=solid}
> @Test
> public void testPDFOCRExtraction() throws IOException, SAXException,
> TikaException {
> File file = new File(filePath);
> InputStream stream = new FileInputStream(file);
>
> BodyContentHandler handler = new BodyContentHandler(Integer.MAX_VALUE);
> Metadata metadata = new Metadata();
> PDFParserConfig config = new PDFParserConfig();
> config.setExtractInlineImages(true);
> ParseContext context = new ParseContext();
> context.set(PDFParserConfig.class, config);
>
> PDFParser pdfParser = new PDFParser();
> pdfParser.setPDFParserConfig(config);
> pdfParser.parse(stream, handler, metadata, context);
> String text = handler.toString().trim();
> assertFalse(text.isEmpty());
> }
> {code}
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