Novel Methods for the Visualization and Analysis of Functional Maps in Cortex

Results 173 7.3.1.6 Energy Series Figure 56 shows energy series. The image at the top displays the course of the best total en- ergy as well as the corresponding weighted components during the very-low-resolution regis- tration process. As mentioned before, the images have a size of 33 pixels x 33 pixels in the current implementation. The other two images show the same functions but for the low- resolution case (65 pixels x 65 pixels), and for the high-resolution case (129 pixels x 129 pix- els). The energy values were recorded after each test deformation (called warp in the figure). For each relevant control point, there are six test deformations (warps) done during one itera- tion in the current implementation of mrFindBorders. If the total energy had increased after a test deformation, the energies not for this case, but for the best total energy case, were re- corded. Therefore, the total energy will never increase, but a single weighted energy compo- nent may increase. In fact, the weighted deformation energy usually increases (starting at zero if the initial displacement fields had only one constant value).