Affiliations 

  • 1 Department of Computer Science, Liverpool John Moores University, Liverpool, United Kingdom
  • 2 Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang, Selangor, Malaysia
  • 3 Media and Games Innovation Centre of Excellence (MaGIC-X) UTM-IRDA Digital Media Centre, Institute of Human Centred, University Industry Research Laboratory (UIRL), Universiti Teknologi Malaysia UTM, Skudai, Johor, Malaysia
  • 4 Universiti Malaysia Terengganu, Terengganu, Malaysia
PLoS One, 2018;13(2):e0191447.
PMID: 29420568 DOI: 10.1371/journal.pone.0191447

Abstract

In this paper, we present a new method to recognise the leaf type and identify plant species using phenetic parts of the leaf; lobes, apex and base detection. Most of the research in this area focuses on the popular features such as the shape, colour, vein, and texture, which consumes large amounts of computational processing and are not efficient, especially in the Acer database with a high complexity structure of the leaves. This paper is focused on phenetic parts of the leaf which increases accuracy. Detecting the local maxima and local minima are done based on Centroid Contour Distance for Every Boundary Point, using north and south region to recognise the apex and base. Digital morphology is used to measure the leaf shape and the leaf margin. Centroid Contour Gradient is presented to extract the curvature of leaf apex and base. We analyse 32 leaf images of tropical plants and evaluated with two different datasets, Flavia, and Acer. The best accuracy obtained is 94.76% and 82.6% respectively. Experimental results show the effectiveness of the proposed technique without considering the commonly used features with high computational cost.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.