Omer did an update to his tool to allow for the selection of only specific bits of text from an image in OneNote. You now get a little window that shows you all the text from the image and can select only the text you need. Here's what Omer has to say:
Want to select and copy part of a text on an image in OneNote? Go grab latest update for Onetastic: http://omeratay.com/onetastic.
This is a great powertoy and I'm happy to update everyone when Omer adds to it.
Questions, comments, concerns and criticisms always welcome, John