hi,
can you be a bit more precise what you are looking for? there is no "Medical image recognition and compression device". there are lots of different imaging technologies in medicine. see
Medical imaging - Wikipedia, the free encyclopedia
Depending on that, you can do many different processing on theese images like segmentation, registration, recognition, encoding/compression, ...
For this part you also can find very much on the internet .. just google medical/digital image processing. If your looking for a special programming library, look for
ITK - Segmentation & Registration Toolkit (processing) and
VTK - The Visualization Toolkit (visualization).
hope this "segmentation" helps ...
regards,
sebastian