Hi, I'm using Solr 5.3.0 on a Red Hat EL 7 and I try to extract content from PDF, Word, LibreOffice, etc. docs using the ExtractingRequestHandler.
Everything works fine, except when I want to extract content from embedding images in PDF/Word etc. documents : I send an extract request like this : POST /update/extract?literal.id =ocrpdf8&fmap.content=attr_content&uprefix=attr_ In attr_content, I get : \n \n date 2015-08-28T13:23:03Z \n pdf:PDFVersion 1.4 \n xmp:CreatorTool PDFCreator Version 1.2.3 \n stream_content_type application/pdf \n Keywords \n subject \n dc:creator S050735 \n dcterms:created 2015-08-28T13:23:03Z \n Last-Modified 2015-08-28T13:23:03Z \n dcterms:modified 2015-08-28T13:23:03Z \n dc:format application/pdf; version=1.4 \n Last-Save-Date 2015-08-28T13:23:03Z \n stream_name imagepdf.pdf \n meta:save-date 2015-08-28T13:23:03Z \n pdf:encrypted false \n dc:title imagepdf \n modified 2015-08-28T13:23:03Z \n cp:subject \n Content-Type application/pdf \n stream_size 423660 \n X-Parsed-By org.apache.tika.parser.DefaultParser \n X-Parsed-By org.apache.tika.parser.pdf.PDFParser \n creator S050735 \n meta:author S050735 \n dc:subject \n meta:creation-date 2015-08-28T13:23:03Z \n stream_source_info the-file \n created Fri Aug 28 13:23:03 UTC 2015 \n xmpTPg:NPages 1 \n Creation-Date 2015-08-28T13:23:03Z \n meta:keyword \n Author S050735 \n producer GPL Ghostscript 9.04 \n imagepdf \n \n page \n Page 1 sur 1\n \n 28/08/2015 http://confluence/download/attachments/158471300/image2015-3-3+18%3A10%3A4... \n \n embedded:image0.jpg image0.jpg embedded:image1.jpg image1.jpg embedded:image2.jpg image2.jpg \n So, tika works fine, but it doesn't apply OCR content extraction on the embedded images. When I post an image (JPG) on /update/extract, I get its content indexed throught Tesseract OCR (attr_content) field : \n \n stream_size 55422 \n X-Parsed-By org.apache.tika.parser.DefaultParser \n X-Parsed-By org.apache.tika.parser.ocr.TesseractOCRParser \n stream_content_type image/jpeg \n stream_name OM_1.jpg \n stream_source_info the-file \n Content-Type image/jpeg \n \n \n ‘ '\"I“ \" \"' ./\nlrast. Shortly before the classes started I was visiting a.\ncertain public school, a school set in a typically English\ncountryside, which on the June clay of my visit was wonder-\nfully beauliful. The Head Master—-no less typical than his\nschool and the country-side—pointed out the charms of\nboth, and his pride came out in the final remark which he made\nbeforehe left me. He explained that he had a class to take\nin'I'heocritus. Then (with a. buoyant gesture); “ Can you\n\n, conceive anything more delightful than a class in Theocritus,\n\non such a day and in such a place?\"\n\n \n \n \n stream_size 55422 \n X-Parsed-By org.apache.tika.parser.DefaultParser \n X-Parsed-By org.apache.tika.parser.ocr.TesseractOCRParser \n X-Parsed-By org.apache.tika.parser.jpeg.JpegParser \n stream_content_type image/jpeg \n Resolution Units inch \n stream_source_info the-file \n Compression Type Progressive, Huffman \n Data Precision 8 bits \n Number of Components 3 \n tiff:ImageLength 286 \n Component 2 Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert \n Component 1 Y component: Quantization table 0, Sampling factors 2 horiz/2 vert \n Image Height 286 pixels \n X Resolution 72 dots \n Image Width 690 pixels \n stream_name OM_1.jpg \n Component 3 Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert \n tiff:BitsPerSample 8 \n tiff:ImageWidth 690 \n Content-Type image/jpeg \n Y Resolution 72 dots I see on Tika JIRA that I have to enable extractInlineImages in org/apache/tika/parser/pdf/PDFParser.properties to force image extraction on PDF. So I did it, and I package a tika-app-1.7.jar that contains the tika-parsers-1.7.jar with this file modified to set to true this property. Then, I test my Tika JAR using CLI : # java -jar tika-app-1.7.jar -t /data/docs/imagepdf.pdf In this case, I get the images content : Page 1 sur 1 28/08/2015 http://confluence/download/attachments/158471300/image2015-3-3+18%3A10%3A4. .. Simple Evan! Use Case Sdsedulet So, I replace the solr/contrib/extraction/lib/tika-parsers-1.7.jar by my modified one, but the images remains not extracted in my pdf. Does anybody know what I'm doing wrong ? Thank you. -- Damien Picard Expert GWT <http://www.editions-eni.fr/livres/gwt-google-web-toolkit-developpez-des-applications-internet-riches-ria-en-java/.97a1a26e7d5be94763fc45ac2a1e961a.html> Mob : 06 11 51 47 78
