1. Tropical Resource Mapping Research Group, Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, Skudai, Malaysia
2. Geoscience and Digital Earth Centre, Research Institute for Sustainability and Environment, Universiti Teknologi Malaysia, Skudai, Malaysia
3. National School of Surveying, University of Otago, Dunedin, Aotearoa New Zealand
4. Consiglio Nazionale Delle Ricerche (CNR), Area Delle Ricerca CNR S.Cataldo, National Research Council (CNR), Pisa, Italy