When comparing LK3D and B-Splines in time-dependent deformation, the difference between the two becomes apparent. Tracking a single point through the data domain over a single unit of time using velocity fields requires stepwise integration using time interpolated deformation

The orbital fat deformation visualization pipeline, see figure 1, was developed using the C++, OpenGL, GLSL and CUDA programming tools, and binaries are available for Linux and Windows. It consisted of three phases: (1) data acquisition and processing, (2) specification of a ROI, and (3) visualization of sliding and deformation. Each of these phases in turn consisted of a number of steps, together comprising a hierarchical framework that we used to investigate fat deformation in the orbit.