The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Hologram Compression Technique using Motion Compensated Temporal Filtering

움직임보상 시간적 필터링을 이용한 홀로그램 압축 기법

  • Published : 2009.11.30
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Abstract

We propose an efficient coding method of digital holograms using MCTF and standard compression tools for video. The hologram is generated by a computer-generated hologram (CGH) algorithm with both an object image and its depth information. The proposed coding consists of localization by segmenting a hologram, frequency transform using $64\times64$ segment size, 2-D discrete cosine transform DCT for extracting redundancy, motion compensated temporal filtering (MCTF), segment scanning the segmented hologram to form a video sequence, and video coding, which uses H.264/AVC. The proposed algorithm illustrates that it has better properties for reconstruction, 10% higher compression rate than previous research in case of object.

본 논문에서는 MCTF와 표준 비디오 압축 도구를 이용하여 디지털 홀로그램을 효율적으로 부호화하는 방법을 제안한다. 홀로그램은 객체 영상과 깊이 정보를 바탕으로 하여 컴퓨터 생성 알고리즘으로부터 생성되었다. 제안한 알고리즘은 홀로그램을 분리하는 국부화 과정, $64\times64$ 크기의 세그먼트를 나누는 과정, 상관성을 유도하기 위한 DCT 과정, MCTF 과정, 압축을 위해 비디오 시퀀스를 만드는 과정, 그리고 H.264/AVC를 이용하여 압축하는 과정으로 구성된다. 제안한 알고리즘은 이전의 연구와 비교할 때 복원된 객체에 대해서 10%만큼 압축 효율이 향상되었다.

Keywords

References

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