An optical diagnosis system for in-situ observing and estimating crystal growth situation

Ya Chen; Shuiyuan Tang; Qun Hao; Zhi Li

doi:10.1117/12.676514

23 February 2006 An optical diagnosis system for in-situ observing and estimating crystal growth situation

Ya Chen, Shuiyuan Tang, Qun Hao, Zhi Li

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 61503Y (2006) https://doi.org/10.1117/12.676514
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

An optical diagnosis and analysis system is developed to in-situ observe and estimate crystal growth situation. A polarizing filter and a high pass binary amplitude filter are used in a common microscopy to observe the phase object and also to inverse the image contrast and strengthen the image edge. Meanwhile, a series of image processing techniques, such as median filtering, Robert operator, optimal threshold method and so on, are introduced to analyze the images of the crystal. An improved Hough transformation is carried out to get the pattern of crystal lattice. Finally, according to the integrity of crystal lattice and the evenness in the crystal lattice, some advice on the crystal growth situation is given. Experimental results with the acquired images demonstrate that the proposed system is feasible.

Citation Download Citation

Ya Chen, Shuiyuan Tang, Qun Hao, and Zhi Li "An optical diagnosis system for in-situ observing and estimating crystal growth situation", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61503Y (23 February 2006); https://doi.org/10.1117/12.676514

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KEYWORDS

Crystals

Linear filtering

Digital filtering

Image processing

Image filtering

Microscopes

Optical filters

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