About the Authors

Jing Rui Tang

Affiliation Imaging and Intelligent System Research Team (ISRT), School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, Malaysia

Nor Ashidi Mat Isa

ashidi@usm.my

Affiliation Imaging and Intelligent System Research Team (ISRT), School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, Malaysia

Ewe Seng Ch’ng

Affiliation Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Kepala Batas, Pulau Pinang, Malaysia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JRT NAMI ESC. Performed the experiments: JRT. Analyzed the data: JRT. Contributed reagents/materials/analysis tools: NAMI. Wrote the paper: JRT NAMI ESC.