  In order to analyze the moving and deforming of the objects in image
sequence, a novel way is presented to analyze the local changes of object edges
between two related images (such as two adjacent frames in a video sequence),
which is inspired by the physical electromagnetic interaction. The changes of
edge between adjacent frames in sequences are analyzed by simulation of virtual
current interaction, which can reflect the change of the object's position or
shape. The virtual current along the main edge line is proposed based on the
significant edge extraction. Then the virtual interaction between the current
elements in the two related images is studied by imitating the interaction
between physical current-carrying wires. The experimental results prove that
the distribution of magnetic forces on the current elements in one image
applied by the other can reflect the local change of edge lines from one image
to the other, which is important in further analysis.
