1. An object image correction method for object identification adapted to an object image correction apparatus, comprising: in the object image correction apparatus, an image capturing unit capturing an image at least having an object and the image is buffered in a memory of the object image correction apparatus; in the object image correction apparatus, an object-position identifying unit detecting one or more object positions in the image retrieved from the memory; in the object image correction apparatus, an object-feature identifying unit detecting positions of a plurality of object features; in the object image correction apparatus, a feature-position computing unit computing positions of a plurality of feature points of the object features; in the object image correction apparatus, a position-deviation judging unit determining a degree of each deviation of the object according to the plurality of feature points by comparing the deviation with a default value with non-deviation, in which 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 are performed; and computing positions of the plurality of feature points after one or more corrections made by a correction unit of the object image correction apparatus, wherein the correction unit includes one or in combination of a rotation correction unit, a direction correction unit, a scaling correction unit, and a shift correction unit.