Browse > Article
http://dx.doi.org/10.6109/jkiice.2017.21.10.1950

High Accurate Cup Positioning System for a Coffee Printer  

Kim, Heeseung (School of Electrical, Electronic, Robot and Communication Engineering, Korea National University of Transportation)
Lee, Jaesung (School of Electrical, Electronic, Robot and Communication Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.10, 2017 , pp. 1950-1956 More about this Journal
Abstract
In food-printing field, precise positioning technique for a printing object is very important. In this paper, we propose cup positioning method for a latte-art printer through image processing. A camera sensor is installed on the upper side of the printer, and the image obtained from this is projected and converted into a top-view image. Then, the edge lines of the image is detected first, and then the coordinate of the center and the radius of the cup are detected through a Circular Hough transformation. The performance evaluation results show that the image processing time is 0.1 ~ 0.125 sec and the cup detection rate is 92.26%. This means that a cup is detected almost perfectly without affecting the whole latte-art printing time. The center point coordinates and radius values of cups detected by the proposed method show very small errors less than an average of 1.5 mm. Therefore, it seems that the problem of the printing position error is solved.
Keywords
Food Printing; Homography; Circular Hough Transform; Edge Detection; Printer Positioning Technology;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Z. Wang, Y. Torigoe and S. Hirai, "A Prestressed Soft Gripper: Design, Modeling, Fabrication, and Tests for Food Handling," IEEE Robotics and Automation Letters, vol. 2, no. 4, pp. 1909-1916, Oct. 2017.   DOI
2 Y. Fan , Z. Min, and B. Bhesh, "Recent development in 3D food printing," Critical Reviews in Food Science and Nutrition, vol. 57, pp. 3145-3153, Oct. 2015.
3 A. Z. Kouzani, S. Adams, R. Oliver, Y. Y. Nguwi, B. Hemsley and S. Balandin, "3D printing of a pavlova," 2016 IEEE Region 10 Conference (TENCON), Singapore, pp. 2281-2285, 2016.
4 M.-N. Pablo, L.-A. Javier, J. M. Buenaposada, and B. Luis, "Speeding-up homography estimation in mobile devices," Journal of Real Time Image Processing, vol. 11, no. 1, pp. 141-154, Jan. 2013.
5 G. Zbigniew, Z. Ewa, T. Boguslaw, P. Andrzej, "The use of the Circular Hough Transform for counting coins," Measurement Automation Monitoring, vol. 61, no. 09, pp. 434-437, Sept. 2015.
6 Nisha, M. Rajesh, and S. Lalita, "Comparative Analysis of Canny and Prewitt Edge Detection Techniques used in Image Processing," International Journal of Engineering Trends and Technology (IJETT), vol. 28, no. 1, pp. 48-53, Oct. 2015.   DOI
7 R. C. Gonzalez, R. E. Woods, Digital Image Processing, 4th ed. London, UK: Pearson, 2017.
8 M. Jang and A.-S. Oh, "Design of 3D Printer Based on SLA Using LSU and Test of Scanning Mechanism," Journal of the Korea Institute of Information and Communication Engineering, vol. 21, no. 6, pp. 1225-1230, June 2017.   DOI