A transformation algorithm of vector data formats under multi-core parallel environment

Aiming at the insufficiency of studying the parallel algorithm of VCT format transformation,the paper discussed the parallel method of data format rapid transformation from VCT to shapefile:first,a sequential transformation algorithm was designed according to the characteristics of VCT through building VCT index,parsing key information and transforming a VCT file to many shapefile files;second,a vector data decomposition method was designed for load-balancing,in which the complexities of different vector layers were evaluated to distribute the vectors equally,thus the proposed parallel algorithm was implemented under multi-core processors.The experimental results showed that the presented parallel algorithm could get correct transformation results with a good parallel speedup ratio,and obtain overall load-balancing.