The EVF keeps the high-rank vectors unchanged while extending them to unimportant regions, using a diffusion process based on a system of parabolic equations. "Generalized Gradient Vector Flow External Forces for Active Contours." Signal Processing 71 (2): 131-139) for image processing. We propose a new technique based on an enhanced vector flow (EVF), similar to the gradient flow by Xu and Prince (1998. The current methods are often unable to match such complicated VFs. However, surfaces represented by industrial formats often produce irregular non-homogeneous VFPD.
Matching a five-axis toolpath and a vector field (VF) of preferred directions (VFPD) is increasingly popular in the five-axis machining industry.
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