The image corners responding to leaf teeth.

<p>The image corners responding to leaf teeth.</p

The obtained binary image.

<p>The obtained binary image.</p

Illustration of the third and fourth leaf tooth features.

<p>Illustration of the third and fourth leaf tooth features.</p

The example image for <i>Conyza canadensis</i> (L.) Cronq.

<p>The example image for <i>Conyza canadensis</i> (L.) Cronq.</p

The example image for <i>Cyclobalanopsis glauca (Thunb</i>.<i>)</i> Oerst.

<p>The example image for <i>Cyclobalanopsis glauca (Thunb</i>.<i>)</i> Oerst.</p

The four leaf tooth features for four example images.

<p>The four leaf tooth features for four example images.</p

List of important notations.

<p>List of important notations.</p

A Novel Method of Automatic Plant Species Identification Using Sparse Representation of Leaf Tooth Features

<div><p>Automatic species identification has many advantages over traditional species identification. Currently, most plant automatic identification methods focus on the features of leaf shape, venation and texture, which are promising for the identification of some plant species. However, leaf tooth, a feature commonly used in traditional species identification, is ignored. In this paper, a novel automatic species identification method using sparse representation of leaf tooth features is proposed. In this method, image corners are detected first, and the abnormal image corner is removed by the PauTa criteria. Next, the top and bottom leaf tooth edges are discriminated to effectively correspond to the extracted image corners; then, four leaf tooth features (Leaf-num, Leaf-rate, Leaf-sharpness and Leaf-obliqueness) are extracted and concatenated into a feature vector. Finally, a sparse representation-based classifier is used to identify a plant species sample. Tests on a real-world leaf image dataset show that our proposed method is feasible for species identification.</p></div

The example image for <i>Duranta repens</i> Linn.

<p>The example image for <i>Duranta repens</i> Linn.</p

The example image for <i>Parthenocissus tricuspidata</i> (Sieb. et Zucc.) Planch.

<p>The example image for <i>Parthenocissus tricuspidata</i> (Sieb. et Zucc.) Planch.</p