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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

João Araujo Ribeiro conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, prepared figures and/or tables, performed the computation work, authored or reviewed drafts of the paper, approved the final draft.

Jorge Silva Brito conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Orlando Bernardo conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, performed the computation work.

Irving Badolato conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, performed the computation work.

Rodrigo Dacome conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, performed the computation work.

Guilherme Abelha Mota conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, performed the computation work.

Data Deposition

The following information was supplied regarding data availability:

https://sourceforge.net/projects/e-foto/

http://www.efoto.eng.uerj.br/

Funding

From 2004 to 2007, the CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) agency sponsored this project. Nowadays, UERJ (State University Rio de Janeiro) provides support to the project with grants for technical support (PROATEC), undergraduate research and trainee. The Brazilian Army (Exército Brasileiro/ Diretoria do Serviço Geográfico) also have sponsored this project by a caoperation to the development of the photogrammetric module of the project SIG-Desktop. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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