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

  • 제12권4호
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  • Pages.603-610
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  • 2008
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  • 2234-4772(pISSN)
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  • 2288-4165(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
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히스토그램 변환기법을 이용한 디지털 홀로그램의 잡음제거 알고리듬

Noise Reduction Algorithm of Digital Hologram Using Histogram Changing Method

  • 발행 : 2008.04.30
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⟨ 이전 논문 다음 논문 ⟩

초록

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.

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.

키워드

참고문헌

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