Abstract—Because setting character key poses in animation is
time-consuming , most work today are done in solving this
problem. Representing the character pose by skeleton that has
the joints and bone information is very intuitive , the sketch
operation is very simple in interface and interactive mode . So,
we present a novel 2D Cartoon character deformation method
combining skeleton with sketch: First user sketch several key
poses using of skeleton that indicate the moving sequence.
Then sketch the object character’s skeleton corresponding to
the origin skeleton that means they are topological
isomorphism. Finally, we get the characters animation
sequence by using deformation algorithm in terms of the least
squares. Most important thing is deformation algorithm, the
algorithm aims to preserve shape properties ,that is
deformations should be as rigid as possible. We use least
squares to solve the deformation function. From the laboratory
experiment, the system is not only easy to operate but also can
implement character exaggerative deformations, which can be
performed in real-time. Specially, the key pose implying from
skeleton can retarget different objects .