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In order to rebuild 3D models of pump impeller, ICT fault images in high quality of two typical impellers were collected at first, and format conversion from RAW to BMP was fulfilled though a developed program. On the platform of VC++ 6.0, MFC, OpenGL, ADO were used, and with the technologies of fault images pre-processing, 2D image processing and 2D geometric processing, noise to these images was removed and image definition was greatly improved. Development tools like 3D model in surface were reconstructed, transformation from surface model to solid model was also realized by triangular facets and B—Rep model. Living rebuilt examples fulfilled on ReImpeller3D showed that the way of reconstruction can supply geometrical models for numerical simulation, FEM, RP, digitized production, and optimization design, so it is feasible to use ICT fault images to rebuild 3D models of the impellers.