title: How-to extract text from a pdf doc within a specific rectangular region?
body: <p>I have to extract text from a pdf doc within a specific rectangular region. The work-flow is as following. First of all pdf is converted to an jpg image. Then user draws selection rectangle on top of the picture. Then I somehow need to extract all text from pdf doc within that selection region. Any suggestions what freeware pdf libs accessible from C# to use?</p>