The contour curve of object was parameterized by an affine invariable and the parameterized curve of object waiting for recognition was projected orthogonally.

• 将目标轮廓曲线用仿射不变量参数化,待识别目标的参数化轮廓线正交投影后,可使其与库存同一型号的目标轮廓线保持较强的相关性。