I recently had a situacion where I needed to extract images from a word document. This can be cumbersome, tedious and you can loose the fidelity of your images
I found two good aproaches: first see
Approach One. This approach indicates to save the document as a web page.
In my case I needed images with a sequence I could follow. Like Figure1 Figure2 etc and I needed them with the best quality possible. So I used another link recommended
Approach Two which has a macro that you can use to export your image as bmp.
Those two links were of great help to me. I recommended them.