Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Noise Reduction Algorithm of Digital Hologram Using Histogram Changing Method

히스토그램 변환기법을 이용한 디지털 홀로그램의 잡음제거 알고리듬

  • Published : 2008.04.30
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Abstract

In this paper, we propose an efficient noise reduction algorithm for digital hologram during acquisition and transmission. The proposed algorithm segment a digital hologram with object region and background region after DCT. Then, we adopt a histogram transition method for object region and zero-value change method for background region. The experimental results show that our algorithm has beuer performance than a natural image denoising algorithm.

본 논문에서는 디지털 홀로그램의 획득 및 전송과정에서 발생하는 잡음을 효율적으로 제거하는 알고리듬을 제안한다. 제안한 알고리듬은 디지털 홀로그램을 DCT(Discrete Cosine Transform)하여 주파수영역으로 변환한 후 객체영역과 배경영역으로 분리한다. 이 후, 객체영역은 히스토그램 변환기법을 적용하고 배경영역은 '0'으로 치환하였다. 제안한 알고리듬을 적용한 결과 PSNR이 6dB이상 향상되었다.

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References

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