Reconstruction and featurization of local region based on CAD surface models

To solve the edit modification problem of local region in CAD surface models,a reconstruction and featurization method of local region based on CAD surface models was proposed.The characteristic curves was taken as basic elements to reconstruct the shape of surface feature with certain precision and to achieve the featurization of local region with configuring high-level parameters.A-local region was selected from the existing surface model,and the selected local region was reconstructed by a suitable surface generation method from the obtained characteristic curves.The shape similarity was analyzed between the reconstructed surface and the source surface,and the reconstructed surface was parameterized based on the characteristic curves.Experimental results showed that the proposed method could quickly achieve the featurization of local region and support users to intuitively edit and modify freeform feature with a few high-level parameters.It was an effective method for reconstruction and featurization of local region in surface models.