Abstract
A hierarchical three-dimension mesh model sharing method is proposed. The method, also called (t1, t2, ¡K, tr, n)-threshold sharing, encodes an original three-dimension mesh model into n model-shares, where t1 „T t2 „T ¡K „T tr „T n. Any t1 model-shares provide the least quantity for revealing the smallest part of the original three-dimension mesh model. More model-shares are received, the revealed part becomes larger. Because tr model-shares are received the original three-dimension mesh model is revealed with very little distortion, the method is thus highly fault-tolerant.