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大学・研究所にある論文を検索できる 「Design of automatic detection algorithm for dislocation contrasts in birefringence images of SiC wafers」の論文概要。リケラボ論文検索は、全国の大学リポジトリにある学位論文・教授論文を一括検索できる論文検索サービスです。

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Design of automatic detection algorithm for dislocation contrasts in birefringence images of SiC wafers

Kawata, Akira Murayama, Kenta Sumitani, Shogo Harada, Shunta 名古屋大学

2021.05

概要

Birefringence imaging is one of the powerful methods for nondestructive characterization of defects in the semiconductor crystals. However, due to the complicated and unclear contrasts of dislocations in the birefringence image, it was considered to be difficult to automatically detect the position of the dislocation contrasts by the conventional image processing. In the present study, we designed the automatic detection algorithm for the dislocation contrasts taking into account for the characteristic feature of the dislocation contrasts, which were always pair of black and white contrasts. To detect the large change in the contrast level near the dislocation contrast, the automatic detection algorithm was constructed by using variance filter. Finally, we succeeded in detecting the position of the dislocation contrasts with relatively high precision and sensitivity.

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