You can write a transform to convert Word's embedded images into SVG and
then use Batik to convert them into PNG or JPEG or GIF. Then, with another
transform, you can convert the paragraphs that contain the images into
DocBook's figure or inlinefigure elements. I have an Ant target that scoops
images out of Word documents in that fashion for one of my clients.
HTH
Jay Bryant
Bryant Communication Services