Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Improvement of Accuracy in Evaluating Hue Change Time in the Hue Detection Based Transient Liquid Crystals Technique

색상 검출방식의 천이 액정법에서 색상 변화 시간 산정의 정확도 향상

  • 신소민 (한국항공대학교 항공우주 및 기계공학부 대학원) ;
  • 전창수 (한국항공대학교 항공우주 및 기계공학부) ;
  • 정용운 (한국항공우주연구원 KHP 개발실) ;
  • 곽재수 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2007.11.01
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Abstract

In this paper, different criteria fur determining hue change time in the hue detection based transient liquid crystals technique were compared. Results showed that methods utilizing threshold of intensity or saturation gave many missing points and quality of the calculated results were strongly depends on the value of threshold. Wider bandwidth in the hue bandwidth method showed better distribution of calculated hue change time, but induced ambiguity in the hue change time. In the time-hue curve fitting method, the distribution of evaluated hue change time was smooth and reasonable, and, by the nature of curve fitting, the noise effect on the hue was successfully considered in calculating of the hue change time. Compared to other methods, it is expected that the time-hue curve fitting method would provide better and accurate hue change time in the hue detection based transient liquid crystals technique.

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References

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