1. Department of Technology of Computers and Communications, Hyperspectral Computing Laboratory, Escuela Politécnica, University of Extremadura, Cáceres, Spain
2. Department of Computer Systems Engineering and Telematics, Escuela Politécnica, University of Extremadura, Cáceres, Spain
3. Department of Technology of Computers and Communications, University of Extremadura, Cáceres, Spain
4. Department of Engineering, Universidad del Pacífico, Lima, Peru
5. Departamento de Sistemas de Comunicación y Control, Escuela Técnica Superior de Ingenieria Informática, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain