2D and 3D Surface Texture Comparisons Using Autocorrelation Functions
Autocorrelation and cross-correlation functions are proposed for 2D and 3D surface texture comparisons. At the maximum correlation point of the two correlated surface textures, there is a peak shown at the cross-correlation curve. It is proposed to generate a difference function at the maximum correlation point for evaluation of the difference between the two compared surface textures. Based on this method, the National Institute of Standards and Technology (NIST) bullet signature measurement system is developed for the bullet signature measurements of NIST standard bullets.
Yongsheng Gao, Shuetfung Tse and Wei Gao
J. Song et al., "2D and 3D Surface Texture Comparisons Using Autocorrelation Functions", Key Engineering Materials, Vols. 295-296, pp. 437-440, 2005