2D Partial Similarity Estimation Based on Energy Segmentation II. Feature based Similarity Calculation

The initial effort to develop a systematic approach for estimating partial similarity measure of 2D boundary curve is proposed. First the curves are segmented and a high-level structure, feature´, is introduced to organize the segments into meaningful regions. Then a two-step similarity assessment approach is devised. The first step is structure similar comparison based on the structure description function (SDF), and the second step is to exactly calculate the degree of similarity. One of important characteristics of the proposed approach is that it can implement the partial similarity estimation, not just for the whole object. In addition it can easily point out which parts of two objects are similar and how similar they are, which is very useful for mechanical activity such as creative design, process , etc.