title: how to extract separate vector graphic from pdf per layer
body: <p>I have a pdf document with many layers (OCGs). This doc has only one page. There are few bitmap images and many vector graphics in this doc. Each of vector graphics is related to one of layer (OCG).</p>
  
  <p>I need to extract vector graphics from the document. I tried to use some tools as GSview and Inkscape and got one huge svg document. Unfortunately, I need to extract separate graphics for each of layers (OCGs).</p>
  
  <p>I tried to use libraries ABCpdf, Aspose and iTextSharp, but didn't get what I need. Yes, I can <em>add</em> vector graphics to pdf using iTextSharp, but I need to extract it. Probably, one of these libraries could offer suitable solution but I didn't find it during several hours of researching.</p>
  
  <p>Now I'm digging in Acrobat SDK, but I'm very new to this, and my experience with C/C++ is very poor.(</p>