Abstract: Error evaluation of the reconstruction surface is one of the key technologies in reverse engineering (RE). With the rapid development of computer network and the widely application of RE, the error of surface fitting---the single aim evaluation of surface reconstruction can not meet the demand of the product design in RE. Based on need of evaluation in RE, the conception of complex surface with biggish tolerance (CSBT) of RE is proposed, a multi-object evaluation mechanism of CSBT reconstruction is established, a multi-object evaluation mode is given and a method of the network-based RE is presented.

Key words: Biggish tolerance, Complex surface, Multi-object, Reverse engineering