基于四叉树Fresnelet的数字全复全息图压缩

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-07-18 DOI:10.1016/j.optcom.2025.132157

Dong-Wook Kim, Young-Ho Seo

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引用次数: 0

摘要

随着3D技术的进步，数字全息技术正在成为有前途的下一代3D解决方案。本研究提出了一种压缩方法，该方法对频域中的每个子带进行量化，该方法来源于菲涅耳变换的数字全息图，再加上无损的霍夫曼编码。异常高值的低频系数使用异常指数进行非量化传输，尽管压缩率略有下降，但图像质量提高了约2 dB。使用定制量化器进行的实验表明，压缩比约为30:1，PSNR约为35 dB，证实了该方法在平衡压缩效率和图像保真度方面的有效性。

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Digital full-complex hologram compression based on Quad-tree Fresnelet

With advancements in 3D technology, digital holography is emerging as a promising next-generation 3D solution. This study presents a compression method that applies quantization to each subband in the frequency domain, derived from Fresnelet-transformed digital holograms, coupled with lossless Huffman coding. Exceptionally high-value, low-frequency coefficients are transmitted unquantized using exception indices, improving image quality by approximately 2 dB despite a slight decrease in compression rate. Experiments with a custom quantizer demonstrate a compression ratio of about 30:1, achieving a PSNR of roughly 35 dB, confirming the method’s effectiveness in balancing compression efficiency and image fidelity.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.