From Figure 4(a), we see there are innumerable various plant leaves, but these leaves can be clustered into several similar classes by leaf shape description or similarity measure, such as Acerose, Linear, Gladiate , Ensiform, Oblanceolate, Ovate, Oval, Obovate, and Elliptic.

Functional, physicochemical and retrogradation properties of sword bean (Canavalia gladiate ) acetylated and oxidized starches.