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ZeroReg3D: a zero-shot registration pipeline for 3D consecutive histopathology image reconstruction

Juming Xiong,Ruining Deng,Jialin Yue,Siqi Lu,Junlin Guo,Marilyn Lionts,Tianyuan Yao,Can Cui,Junchao Zhu,Chongyu Qu,Yuechen Yang,Mengmeng Yin,Haichun Yang,Yuankai Huo

Published 2025 in Journal of Medical Imaging

ABSTRACT

Abstract. Purpose Histological analysis plays a crucial role in understanding tissue structure and pathology. Although recent advancements in registration methods have improved 2D histological analysis, they often struggle to preserve critical 3D spatial relationships, limiting their utility in both clinical and research applications. Specifically, constructing accurate 3D models from 2D slices remains challenging due to tissue deformation, sectioning artifacts, variability in imaging techniques, and inconsistent illumination. Deep learning-based registration methods have demonstrated improved performance but suffer from limited generalizability and require large-scale training data. In contrast, non-deep-learning approaches offer better generalizability but often compromise on accuracy. Approach We introduce ZeroReg3D, a zero-shot registration pipeline that integrates zero-shot deep learning-based keypoint matching and non-deep-learning registration techniques to effectively mitigate deformation and sectioning artifacts without requiring extensive training data. Results Comprehensive evaluations demonstrate that our pairwise 2D image registration method improves registration accuracy by ∼10% over baseline methods, outperforming existing strategies in both accuracy and robustness. High-fidelity 3D reconstructions further validate the effectiveness of our approach, establishing ZeroReg3D as a reliable framework for precise 3D reconstruction from consecutive 2D histological images. Conclusions We introduced ZeroReg3D, a zero-shot registration pipeline tailored for accurate 3D reconstruction from serial histological sections. By combining zero-shot deep learning-based keypoint matching with optimization-based affine and non-rigid registration techniques, ZeroReg3D effectively addresses critical challenges such as tissue deformation, sectioning artifacts, staining variability, and inconsistent illumination without requiring retraining or fine-tuning.

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