Allegedly, on or about 09 June 2016, Robert Moskowitz sent:
What other tool can read in pdfs and provide selecting an image (e.g. a figure in an IEEE standard) that I can then copy over to Libre Office?
Since nobody's suggested it, I'll state a crude workaround:
1. Display the graphic you want to use. 2. Hit the PrintScreen button. 3. Save the file and import it into your office program.
LibreOffice is a bit awful at handling images, though. So, you may want to size up your initial display to how big you want it, and edit the saved file in something like GIMP, before importing it into LibreOffice.