Method for constructing current-voltage mapping by virtue of voltage-current mapping

The invention relates to a method for constructing current-voltage mapping by virtue of voltage-current mapping. The method is characterized in that for a sensor with N electrodes in electric tomography, a current-voltage matrix is exclusively calculated through a derived formula through the parameters such as characteristic value and characteristic vector of a voltage-current matrix so as to construct the current-voltage mapping. The invention provides a method for directly constructing the current-voltage mapping, the method can be applied to the direct reconstruction algorithm in the field of the electric tomography, the physical significance of the method is clear, and the method is simple and feasible.