Zamudio Lara , A.; Ortiz Ojeda, G.; Rebolledo Ríos, D. A.; Márquez-Aguilar, P. A.; Tecpoyotl Torres , M.; Román Zubillaga , J. L. Implementation of a Digital System for Measuring Areas by Image Processing Using an FPGA. ProgMat 2012, 4, 52-64.