Conversion from Free-Form Surface to Ruled Surface of Centrifugal Compressor Impellers

Assessing Liquid Droplet Erosion Potential in Centrifugal Compressor Impellers

This paper presents a method for estimating the potential for liquid droplet erosion in compression system components, such as the impeller of centrifugal compressors. The erosion model selected is used to calculate a threshold velocity that represents the limit for the onset of erosion damage. The parameters used in the model include the liquid phase density and viscosity, impeller geometry, s...

Free-Form Surface Matching for Surface Inspection

Free-Form Surface Registration using Surface Signatures

This paper introduces a new free-form surface representation scheme for the purpose of fast and accurate registration and matching. Accurate registration of surfaces is a common task in computer vision. The proposed representation scheme captures the surface curvature information, seen from certain points and produces images, called surface signatures, at these points. Matching signatures of di...

Free-Form Surface Reconstruction from Multiple Images

It is widely appreciated that 3D structures may be computed from multiple 2D images of the same scene given point correspondences between images. We review the process from a projective geometry perspective. Of greater interest, however, is the generation of surfaces that give a compact representation of the geometric model. Assuming we are dealing with smooth surfaces, we show that B-spline is...

microleakage evaluation in regard to cavo-surface designs & treatments

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