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Posted to dev@tika.apache.org by "Loris Bachert (JIRA)" <ji...@apache.org> on 2015/09/03 16:26:46 UTC
[jira] [Closed] (TIKA-1729) OCR in PDF files
[ https://issues.apache.org/jira/browse/TIKA-1729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Loris Bachert closed TIKA-1729.
-------------------------------
Resolution: Fixed
Solved. Solution is:
{code:title=PDFOCRTest.java|borderStyle=solid}
Parser parser = new AutoDetectParser();
BodyContentHandler handler = new BodyContentHandler(Integer.MAX_VALUE);
TesseractOCRConfig config = new TesseractOCRConfig();
PDFParserConfig pdfConfig = new PDFParserConfig();
pdfConfig.setExtractInlineImages(true);
ParseContext parseContext = new ParseContext();
parseContext.set(TesseractOCRConfig.class, config);
parseContext.set(PDFParserConfig.class, pdfConfig);
parseContext.set(Parser.class, parser); //need to add this to make sure recursive parsing happens!
parser.parse(stream, handler, new Metadata(), parseContext);
{code}
> 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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