Updating LinePorofile on image changed

Hi, I built an application based on skimage viewer some image filter plugins and a LineProfile. In this application I want to investigate the influence of the filters (tuned by some attached sliders) via the LineProfile tool. My problem is that the tool sees only the original image, and not those generated (and displayed in viewer window) by the filters. How can I make the LineProfile tool relate to the modified image? Thanks, Nadav.