NU correction is introduced, in which the nonuniformity is corrected by using the memory's function conversion

The solid state image sensor have substantially broadened and enhanced manyapplications in the field of optics. But the nonuniformity inherently exists inall present solid state image sensor on the market, because the state of theart makes it difficult to produce a sensor with ideal uniformity. In mostapplications, this nonuniformity is neglected, but in some low-contrast signal