🤖 AI Summary
This work addresses the challenges of low computational efficiency and insufficient structural fidelity in the compression and reconstruction of three-dimensional biological volumetric data. Inspired by matrix singular value decomposition (SVD), the authors propose a structured 3D-SVD method that extends SVD principles to third-order tensors, enabling efficient spatial-domain representation and progressive reconstruction. By preserving key structural information through ordered quasi-singular coefficients, the approach supports flexible truncation strategies. Experimental results on whole-brain and fish volumetric datasets demonstrate that the method achieves reconstruction quality comparable to Tucker decomposition and substantially superior to CP decomposition, while offering faster computation and effectively retaining major anatomical structures even with low-rank truncation.
📝 Abstract
This work introduces Structured 3D-SVD as a practical framework for the reconstruction, compression, and analysis of biological volumetric data. Inspired by the logic of matrix singular value decomposition (SVD), the proposed approach represents third-order volumetric data in the spatial domain and supports progressive reconstruction through ordered quasi-singular coeffients. The experimental evaluation was carried out on two biological volumetric datasets: one full-volume scan of a fish and another of a brain. The results show that Structured 3D-SVD achieves reconstruction quality close to that of Tucker decomposition while requiring shorter computation times and outperforms canonical polyadic decomposition (CPD) in both accuracy and runtime. In addition, a progressive reconstruction analysis shows that relatively low truncation levels are sufficient to preserve the main volumetric structures, while higher truncation levels lead to more detailed reconstructions.