关键词: 叶形, 轮廓, 特征提取, 相似性

Abstract: Morphological characteristics of leaves could be diversified, and the leaf shape is significant to botanical research. In this research, contour characteristic extraction is used to store leaf shape into one-dimensional sequence so that the similarity between different contours of leaf shape can be estimated. Combined with statistics, Pearson product-moment is adopted to calculate correlation coefficient of two characteristic distributions. It’s suggested that the difference of correlation coefficients among different leaf shapes are significant, and the leaf shape recognition test is with high accuracy. This method can be applied as an essential measure to estimate leaf shape similarity.

Key words: leaf shape, contour, characteristic extraction, similarity