Abstract Clarity is an important factor in the evaluation of the quality of diamond.Usually the clarity of diamond is determined through experienced technicians.This means of measurement is imprecise,inconsistent and time consuming.A computer vision system which can test automatically to replace the human eyes was developed.Through the analysis of the diamond color images and color characteristics of the flaws,hue and saturation was chosen as the parameters.The system is also capable for clarity grading.The results showed that with the of defects.the system’s accuracy can be as high as 98ï¼….This algorithm has opened

Keywords CBN face grinding wheel;vitrified bond;strength

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