用于图像分析的多维持续层拉普拉斯方法 / Multi-dimensional Persistent Sheaf Laplacians for Image Analysis
1️⃣ 一句话总结
本文提出了一种基于单纯复形的多维持续层拉普拉斯框架,通过整合多个降维尺度的拓扑光谱特征来稳定地表示图像,在图像分类任务上比传统主成分分析方法表现更稳健且效果更好。
We propose a multi-dimensional persistent sheaf Laplacian (MPSL) framework on simplicial complexes for image analysis. The proposed method is motivated by the strong sensitivity of commonly used dimensionality reduction techniques, such as principal component analysis (PCA), to the choice of reduced dimension. Rather than selecting a single reduced dimension or averaging results across dimensions, we exploit complementary advantages of multiple reduced dimensions. At a given dimension, image samples are regarded as simplicial complexes, and persistent sheaf Laplacians are utilized to extract a multiscale localized topological spectral representation for individual image samples. Statistical summaries of the resulting spectra are then aggregated across scales and dimensions to form multiscale multi-dimensional image representations. We evaluate the proposed framework on the COIL20 and ETH80 image datasets using standard classification protocols. Experimental results show that the proposed method provides more stable performance across a wide range of reduced dimensions and achieves consistent improvements to PCA-based baselines in moderate dimensional regimes.
用于图像分析的多维持续层拉普拉斯方法 / Multi-dimensional Persistent Sheaf Laplacians for Image Analysis
本文提出了一种基于单纯复形的多维持续层拉普拉斯框架,通过整合多个降维尺度的拓扑光谱特征来稳定地表示图像,在图像分类任务上比传统主成分分析方法表现更稳健且效果更好。
源自 arXiv: 2602.14846