About the Authors

Javier Franco-Pedroso

javier.franco@uam.es

Affiliation ATVS-Biometric Recognition Group, Universidad Autonoma de Madrid, Madrid, Spain

Daniel Ramos

Affiliation ATVS-Biometric Recognition Group, Universidad Autonoma de Madrid, Madrid, Spain

Joaquin Gonzalez-Rodriguez

Affiliation ATVS-Biometric Recognition Group, Universidad Autonoma de Madrid, Madrid, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JFP DR JGR. Performed the experiments: JFP. Analyzed the data: JFP DR. Contributed reagents/materials/analysis tools: JFP DR. Wrote the paper: JFP DR JGR.