1. An object image correction method for object identification, comprising: capturing an image at least having an object; detecting one or more object positions in the image; detecting positions of a plurality of object features; computing positions of a plurality of feature points of the object features; determining a degree of each deviation of the object according to the plurality of feature points; comparing the deviation with a default value with non-deviation so as to perform one or in combination of two or more processes including a shift correction process, a rotation correction process, a scaling correction process, and a direction correction process; and computing positions of the plurality of feature points after one or more corrections.