A recursive function based on the use of graphs is presented. The recursive equation is based on mathematical morphology; A written text divided into syllables is related to phonemes of spoken Spanish in Mexico. The algorithm is implemented in a PIC and an integrated circuit that stores the sounds in memory locations. Each space in memory becomes a code that is related to a phoneme. Thus, the recursive function receives as input a vector that is the structure of a word; and outputs the corresponding memory locations. Obtaining intelligibility of more than 84%. The development of the recursive function in graphs is proposed, which allows an easy description of the sequence because it is handled as a black box with input and outputs; and the equation that governs the system can even be a transfer function.

A procedure is presented to detect changes in a video sequence based on the Viola & Jones Method to obtain images of faces of persons; videos are taken of the web. The software allows to obtain images or frames separated from nose, mouth, and eyes but the case of the eyes is taken as an example. Change detection is done by using correlation and the Harris detector. The correlation results allow us to recognize changes in position in the person or movement of the camera if the individual remains fixed and vice versa. It is possible to analyze a part of the face thanks to the Harris detector; It is possible with detected reference points to recognize very small changes in the video sequence of a particular organ; such as the human eye, even when the image is of poor quality as is the case of videos downloaded from the Internet or taken with a low-resolution camera.