1. A signal processing method based on multiple textures, comprising: dividing an input signal that includes a video signal and a sensor signal into unit component signals, and selecting one from a plurality of frames of each unit component signal as a seed signal; detecting a plurality of texture points from the seed signal; tracking the plurality of texture points from the plurality of frames of the unit component signal and then calculating spatio-temporal location transform variables for the respective texture to points; defining a plurality of texture signals using texture points at which the spatio-temporal location transform variables correspond to one another; and defining each of the plurality of texture signals as a sum of a plurality of texture blocks that are outputs of texture synthesis filters that respectively receive video sensor excitation signals as inputs.