pdf-parsing

问题 I am working on a Python project, where I need to process some PDF research papers' data. I'm able to parse papers, extract data from them and identify sections using PyPDF2 . import PyPDF2 pdfFileObj = open('fileName.pdf','rb') pdfReader = PyPDF2.PdfFileReader(pdfFileObj) pageCount = pdfReader.numPages count = 0 text = '' while count < pageCount: pageObj = pdfReader.getPage(count) count +=1 text += pageObj.extractText() Every paper contains References at the end of paper, which I'm able to

问题 Is there any way to create PDF objects (e.g. a PDF-dictionary with parameters that are needed by a custom PDF producer/consumer/viewer) with CGPDF<...> or do I have to write my own parser and create new trailers, xref etc. in order to add new objects to the PDF? As I understand it, CG translates all drawing calls of its graphics context into the correct PDF counterparts when creating a PDF - but I have custom data/objects (e.g. for annotations, threads etc.) that should be stored in the PDF

问题 I have an existing PDF from which I want to retrieve images NOTE: In the Documentation, this is the RESULT variable public static final String RESULT = "results/part4/chapter15/Img%s.%s"; I am not getting why this image is needed?I just want to extract the images from my PDF file So Now when I use MyImageRenderListener listener = new MyImageRenderListener(RESULT); I am getting the error: results\part4\chapter15\Img16.jpg (The system cannot find the path specified) This is the code that I am

问题 I have a pdf, consists only of text, with no special characters nor images etc. Is there any Perl module out there (Been looking at cpan to no avail) to help me parse each page line by line? (Converting the PDF to text yields bad results and unparsable data) Thanks, 回答1: When I want to extract text from a PDF, I feed it to pdftohtml (part of Poppler) using the -xml output option. This produces an XML file which I parse using XML::Twig (or any other XML parser you like except XML::Simple). The

问题 I am trying to parse pdf file using Apache Tika by using ByteArrayInputStream for Binary files... And started getting error for some pdf file and for some it is parsing very well.. Earlier I was able to parse same pdf files using Tika, but now when I tried using ByteArrayInputStream, I started getting error..I think there is some problem with the ByteArray This is the Error I am getting.. org.apache.tika.exception.TikaException: Unexpected RuntimeException from org.apache.tika.parser.pdf

问题 I am trying to parse pdf file using Apache Tika by using ByteArrayInputStream for Binary files... And started getting error for some pdf file and for some it is parsing very well.. Earlier I was able to parse same pdf files using Tika, but now when I tried using ByteArrayInputStream, I started getting error..I think there is some problem with the ByteArray This is the Error I am getting.. org.apache.tika.exception.TikaException: Unexpected RuntimeException from org.apache.tika.parser.pdf

问题 I created some code to extract text and font height from a PDF file using iTextSharp, but does not handle text rotation. How can that information be extracted/computed? Here is the code: // Create PDF reader var reader = new PdfReader("myfile.pdf"); for (var k = 1; k <= reader.NumberOfPages; ++k) { // Get page resources var page = reader.GetPageN(k); var pdfResources = page.GetAsDict(PdfName.RESOURCES); // Create custom render listener, processor, and process page! var listener = new

问题 While processing a PDF file (2.pdf) with pdfminer (pdf2txt.py) I received the following error: pdf2txt.py 2.pdf Traceback (most recent call last): File "/usr/local/bin/pdf2txt.py", line 115, in <module> if __name__ == '__main__': sys.exit(main(sys.argv)) File "/usr/local/bin/pdf2txt.py", line 109, in main interpreter.process_page(page) File "/usr/local/lib/python2.7/dist-packages/pdfminer/pdfinterp.py", line 832, in process_page self.render_contents(page.resources, page.contents, ctm=ctm)

问题 I have to parse PDF files , that are in HDFS in a Map Reduce Program in Hadoop. So i get the PDF file from HDFS as Input splits and it has to be parsed and sent to the Mapper Class. For implementing this InputFormat I had gone through this link . How can the these input splits be parsed and converted into text format ? 回答1: Processing PDF files in Hadoop can be done by extending FileInputFormat Class. Let the class extending it be WholeFileInputFormat. In the WholeFileInputFormat class you

问题 I am trying to extract a table from a pdf document I tried the route of pdf -> html -> extract table. The pdf that I mentioned above when converted to html produces garbage, maybe because of the font, the document is not in english. Extracting the pdf using x and y coordinate is not an option as this solution needs to work for future pdf from the url mention above which will have the table but not always in the same position. Please help, Thanks in advance. 回答1: The PDF does not contain