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2. pdfimages - Wikipedia

   en.wikipedia.org/wiki/Pdfimages

   pdfimages is an open-source command-line utility for lossless extraction of images from PDF files, including JPEG2000 and JBIG2 format when used with option -all. [1] It is freely available as part of poppler-utils and xpdf-utils, and included in many Linux distributions. pdfimages originates from the xpdf package (but now part of poppler-utils).

3. Wikipedia : Graphics Lab/Resources/PDF conversion to SVG

   en.wikipedia.org/.../Resources/PDF_conversion_to_SVG

   Click that key, and then open an image editor and click "paste" (usually in the edit menu). Finally, Wikipedia:Graphic Lab/Image workshop can create, extract, or edit almost any image. Just leave a request for help or advice there. Now here is some info on how to convert PDF image to SVG images. This page covers conversion using free tools.

4. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   A PDF creator and virtual PDF printer for Microsoft Windows PDF-XChange: Proprietary: Yes: PDF Tools allows creation of PDFs from many types of source input (images, scans, etc.). The PDF-XChange print driver allows printing directly to a PDF. A "lite" version of the print driver is free for non-commercial (home and academic) use. PrimoPDF ...

5. Solid PDF Tools - Wikipedia

   en.wikipedia.org/wiki/Solid_PDF_Tools

   Solid PDF Tools recognizes columns, can remove headers, footers and image graphics and can extract flowing text content. Selective content extraction is supported, allowing the conversion of specific text, tables, or images from a PDF file while also providing for the combination of multiple PDF tables into a single Excel worksheet.

6. Optical character recognition - Wikipedia

   en.wikipedia.org/wiki/Optical_character_recognition

   Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

7. Information extraction - Wikipedia

   en.wikipedia.org/wiki/Information_extraction

   Recent effort on adaptive information extraction motivates the development of IE systems that can handle different types of text, from well-structured to almost free text -where common wrappers fail- including mixed types. Such systems can exploit shallow natural language knowledge and thus can be also applied to less structured texts.