Gradient correlation matrixes representing local geometrical features of planar contour is constructed

and properties of eigenvalues and eigenvectors of GCM are analyzed and proved based on Lagrange multiplier optimal method and Γ corner model Thus

the corresponding geometrical meaning is obtained The determinant of GCM is defined as corner response function and the corresponding corner detection algorithm is presented Finally

a number of experiments demonstrate that the proposed algorithm has a good detection performance and robustness to the various geometrical transformations and noise