Inverse Kinematics of NAO’s Right Arm towards its Handwriting a Chinese Character Based on Corner Detection of Character Template

Abstract:

The inverse kinematics is very important in robotic application in the case of known object position. This paper explains about the inverse kinematics of right arm robot NAO based on the corner detection of a Chinese character image. The transformation coordinate system from image input of Chinese character to the robot NAO’s frame acceptable writing is needed. In order to control the right arm of robot NAO to write a Chinese character well, it is necessary to make a proper set of the RShoulderRoll angle q₁ and the RElbowRoll angle q₂, respectively. At first, the thinning processing, corner detection and depth-searching are employed to recognize a Chinese character. Due to the robot NAO just has three fingers, dust the position of the marker or pen-brush must be suitable of its. The experiment results achieve a better demonstration of recognition and handwriting for simple Chinese characters with less than 5 strokes.

• Periodical: Applied Mechanics and Materials (Volumes 548-549)
• Pages: 1053-1058
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.548-549.1053
• Online since: April 2014
• Authors: Effendi Dodi Arisandi, Shi Yin Qin
• Keywords: Corner Detection, Geometric, Inverse Kinematics, Robot NAO, Writing Behavior

References

[1] Yue Lu and Chew Lim Tan. Segmentation of Handwritten Chinese Character from Destiantion Address of Mail Pieces. International Journal of Pattern Recognition and Artificial Intelligence. Vol. 16, No. 1 (2002) 85-86.

DOI: 10.1142/s0218001402001551

[2] Tian Jipeng, G. Hemantha Kumar and H. K. Chenthan. Skew Correction for Chinese Character Using Hough Transform. International Journal of Computer Application (0975-8887), Volume 22-No. 2, May (2011).

DOI: 10.5120/2554-3499

[3] Long-long ma and Cheng-Lin Liu. A New Radical-Based Approach to Online Handwritten Chinese Character Recognition. IEEE (2008).

[4] Tingmei Wang, Ge Chen, and Zhansheng Chen. Analysis and Application of Iteration Skeletonization Algorithm in Recognizing Chinese Character Image. Proceeding of the Second Symposium International Computer Science and Computational Technology (ISCSCT'09) Huangshan, P.R. China, 26-28, Dec. 2009. pp.281-284.

[5] M. Shimizu, H. Fukuda, and G. Nakamura. Thining Algorithm for Digital Figures of Characters. Proceeding 4th IEEE Southwest Symposium on Image Analysis and Interpretation, 2000. pp.83-87.

DOI: 10.1109/iai.2000.839576

[6] Rupal K. Snehkunj. A Comparative Research of Thinning Algorithm. National Technical Symposium on Advencements in Computing Technologies (NTSACT) 2011. Proceedings Publised by International Journal of Computer Applications (IJCA).

[7] Nikolas Kofinas. Forward and Inverse Kinematics for the NAO Humanoid Robot. Thesis report, Departement of Electronic and Computer Engineering, Technical University of Crete, Chania-Greece, July (2012).