1. A. M. Vasiliev, D. S. Perevalov, and V. V. Trofimov, “Monitoring technical process units using imbedded systems and computer vision modules,” New Mater. and Technol., NMT-2010: Proc. All-Rus. Sci.-Techn. Conf. (2010), Vol. 2, p. 86.
2. D. B. Volegov and D. V. Yurin, “Recording device pointer data using a web-camera,” 18th Int. Conf. Computer Graphics and Its Applications, Graphi-Con (2008), pp. 242–247.
3. E. V. Golovenko and S. V. Degtyarev, “Recognition method for reading dial pointers,” Izv. Vuz. Priborostroenie, 55, No. 2, 36–39 (2012).
4. W. Kim, C. Y. Kim, D. G. Kim, and C. J. Lee, “Development of image water level meter using image processing technique,” Proc. Ann. Conf. of Korea Water Resources Association, KWRA’06, Korea (2006), pp. 500–504.
5. Y. J. Kim, H. S. Park, C. J. Lee, et al., “Development of a cloud-based image water level gauge,” IT Converg. Pract. (INPRA), 2, No. 1, 22–29 (2014).