Patent ID: 8532812
Filing Date: 2013-09-10
Classification: G05B,Y02P

Abstract:
1. A method for determining a defect of a surface of an object due to a machining process applied to the object, wherein the surface is generated from a model of the object by a simulation of the machining process, comprising the steps of: determining, at each pixel of the model of the surface, an orientation of the surface; determining, for each pixel, a rate of change in the orientation of the surface based on a difference between a normal vector at the pixel and normal vectors at neighboring pixels; comparing the rate of change to at least one threshold to identify the defects of the surface, wherein the threshold is determined based on the machining process, and wherein the steps of the method are performed by a processor; and determining the normal vector N wherein N 0x , N 0y , N 0z are components of the normal vector along axes x, y, and z; determining the normal vectors N wherein i is an index of the normal vectors; determining components R determining the rate of change based on the components of the rate of change.