상세정보
학술지
New Compression Method for Full-complex Holograms using the Modified Zerotree Algorithm with the Adaptive Discrete Wavelet Transform
- 발행일
- 202011
- 출처
- Optics Express, v.28 no.24, pp.36327-36345
- ISSN
- 1094-4087
- 출판사
- Optical Society of America (OSA)
- 협약과제
- 20JH1200, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
- 초록
- In this paper, we propose a new method for coding a full complex hologram with random phase. Since holograms with random phase have very unique spatial and frequency characteristics, a new compression method suitable for such holograms is required. We analyze the frequency characteristics of holograms with random phases and propose a new adaptive discrete wavelet transform (aDWT). Next, we propose a new modified zerotree alogrithm (mZTA) suitable for the subband configuration generated by the modified wavelet transform method. The results of the compression using the proposed method showed higher efficiency than the previous method, and the reconstructed images showed visually superior results.
- KSP 제안 키워드
- Compression method, Discrete wavelet transform(DWT-EE), Frequency characteristics, Higher efficiency, Random phase, Wavelet transform(WT), Wavelet transform method, new method, reconstructed image