Detection and analysis of diamond fingerprinting feature and its application
Before becoming a jewelry diamonds need to be carved artistically with some special geometric features as the structure of the polyhedron. There are subtle differences in the structure of this polyhedron in each diamond. With the spatial frequency spectrum analysis of diamond surface structure, we can obtain the diamond fingerprint information which represents the Diamond ID and has good specificity. Based on the optical Fourier Transform spatial spectrum analysis, the fingerprinting identification of surface structure of diamond in spatial frequency domain was studied in this paper. We constructed both the completely coherent diamond fingerprinting detection system illuminated by laser and the partially coherent diamond fingerprinting detection system illuminated by led, and analyzed the effect of the coherence of light source to the diamond fingerprinting feature. We studied rotation invariance and translation invariance of the diamond fingerprinting and verified the feasibility of realtime and accurate identification of diamond fingerprint. With the profit of this work, we can provide customs, jewelers and consumers with a realtime and reliable diamonds identification instrument, which will curb diamond smuggling, theft and other crimes, and ensure the healthy development of the diamond industry.
Xin Li Guoliang Huang Qiang Li Shengyi Cben
Department of Biomedical Engineering, the School of Medicine, Tsinghua University,Beijing, 100084, C Department of Biomedical Engineering, the School of Medicine, Tsinghua University,Beijing, 100084, C Department of Biomedical Engineering, the School of edicine, Tsinghua University,Beijing, 100084, Ch Department of Biomedical ngineering, the School of Medicine, Tsinghua University,Beijing, 100084, Ch
国际会议
武汉
英文
1-9
2010-11-02（万方平台首次上网日期，不代表论文的发表时间）