1. Watanabe, N., Obinata, G.: Grip force control based on the degree of slippage using optical tactile sensor. In: International Symposium on Micro-Nano Mechatronics and Human Science, pp. 466–471. IEEE Press, New York (2007)
2. Kim, J., Kim, D., Lee, J., Lee, J., Joo, H., Kweon, I.: Non-contact terrain classification for autonomous mobile robot. In: IEEE International Conference on Robotics and Biomimetics, pp. 824−829. IEEE Press, New York (2009)
3. Tamura, H., Atoda, O.: A nonlinear filter bank for shape-based texture analysis. In: Third Asia-Pacific Conference on Control and Measurement, pp. 58–62 (1998)
4. Tamura, H., Atoda, O.: A bank of “shape-pass” nonlinear filters extracting pictorial features of natural textures. In: Transactions of the Institute of Electronics, Information and Communication Engineers, vol. J82-D-II, no. 12, pp. 2260–2270 (1999) (in Japanese)
5. Haralick, R.M.: Statistical and structural approaches to textures. IEEE Proc. 67(5), 786−804 (1979)