structure feature edges,are extracted firstly,and virtual corners are constructed onthe basis of edge matching.

There are two major points:one is the role fictitious,the other is the psychological expectation.

The case of "San Mao" brings broad debates on merchandising right in fictional characters in the academic realm of intellectual property law.

As we are lack of the explicit provision in law and the suppo rting of theories, the judicial fulfillment has lost fair or unity in the judgment of cases relates to merchandising right in fictional characters in our country.

Whether fictional characters can be protected by copyright law? And how to protect them effectively? These problems have been discussed for a long time.

A comparatively protective mode of works characters has been formed by precedents in the USA, which can be used for reference in China to establish a legal system of protecting fictional characters as the study to that is still rare here.

As far as works is concerned, fictional character is an edge question.

The behavioral modeling of virtual characters has already become one of hot topics on the research of the intelligent virtual environment since the 1990s, and should be also one of essential technologies in virtual reality systems in the future.