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arXiv 2503.18074eess.IVcs.CV

WISE:一种用于十亿像素级全切片图像的无损压缩框架

WISE: A Framework for Gigapixel Whole-Slide-Image Lossless Compression

MBZUAI(穆罕默德·本·扎耶德人工智能大学);City University of Hong Kong(香港城市大学)

Yu Mao, Jun Wang, Nan Guan, Chun Jason Xue

AI总结:

针对全切片图像数据量大、现有压缩方法效果不佳的问题,提出专为WSI设计的无损压缩框架WISE,采用分层编码加字典方法,实现十亿像素WSI平均36倍、最高136倍的压缩效果。

摘要:

全切片图像(Whole-Slide Images, WSIs)通过呈现整个组织切片的高分辨率图像,革新了医学分析领域。尽管无需实体存储切片,但WSIs的数据量极大,导致WSI记录的存储与维护成本高昂且难以为继。为此,本研究首次开展了WSI图像无损压缩的探索。有趣的是,我们发现现有大多数压缩方法都无法有效压缩WSI图像。进一步分析表明,现有压缩器失效的主要原因是WSI图像存在信息不规则性。为解决这一问题,我们开发了一款专为WSI图像设计的简单高效的无损压缩器WISE。WISE采用分层编码策略提取有效比特以降低图像熵值,再使用基于字典的方法处理不规则的频率模式。通过大量实验验证,WISE可将十亿像素级WSI图像平均压缩36倍,最高可达136倍。

英文摘要:

Whole-Slide Images (WSIs) have revolutionized medical analysis by presenting high-resolution images of the whole tissue slide. Despite avoiding the physical storage of the slides, WSIs require considerable data volume, which makes the storage and maintenance of WSI records costly and unsustainable. To this end, this work presents the first investigation of lossless compression of WSI images. Interestingly, we find that most existing compression methods fail to compress the WSI images effectively. Furthermore, our analysis reveals that the failure of existing compressors is mainly due to information irregularity in WSI images. To resolve this issue, we developed a simple yet effective lossless compressor called WISE, specifically designed for WSI images. WISE employs a hierarchical encoding strategy to extract effective bits, reducing the entropy of the image and then adopting a dictionary-based method to handle the irregular frequency patterns. Through extensive experiments, we show that WISE can effectively compress the gigapixel WSI images to 36 times on average and up to 136 times.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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