用混沌扰动增强纹理分类,提升模型鲁棒性。
Chaotic Contrastive Learning for Robust Texture Classification

- 引入逻辑、帐篷、正弦混沌映射作为非线性数据增强。
- 在6个纹理数据集上均超越现有方法,最高准确率达98.7%。
- 适合关注少样本与跨域泛化的视觉研究者。
纹理分类是计算机视觉中的关键任务,因类别间相似度高且结构模式对尺度和光照变化敏感而具挑战性。尽管卷积神经网络(CNN)和近期的视觉变换器已达到性能基准,但通常需大量标注数据,或因过度依赖颜色与形状特征而难以跨域泛化。本文提出一种融合自监督学习(SSL)与确定性混沌动力学的新框架。设计混沌对比预训练策略,利用像素级混沌映射(如逻辑、帐篷、正弦映射)作为非线性数据增强手段。这些基于遍历理论的混沌扰动,模拟复杂环境噪声与反射变化,迫使网络学习拓扑鲁棒特征。此外,提出基于注意力的特征集成方法,融合由监督大模型提供的高层语义表示与混沌预训练小编码器提取的低频结构特征。在六个纹理基准(FMD、UMD、KTH-TIPS2-b、DTD、GTOS、1200Tex)上的实验表明,所提方法显著优于现有最先进方法,在所有数据集上均取得优异性能。
原文摘要 · Abstract (English)
Texture classification is a pivotal task in computer vision, presenting unique challenges due to high inter-class similarity and the sensitivity of structural patterns to scale and illumination changes. While Convolutional Neural Networks (CNNs) and recent Vision Transformers have set performance benchmarks, they often require extensive labeled datasets or struggle to generalize across domains due to an over-reliance on color and shape features. This paper introduces a novel framework that synergizes Self-Supervised Learning (SSL) with deterministic chaotic dynamics. We propose a chaotic contrastive pre-training strategy, where pixel-wise chaotic maps, specifically Logistic, Tent, and Sine maps, act as non-linear data augmentation techniques. These chaotic perturbations, grounded in ergodic theory, force the network to learn topologically robust features by mimicking complex environmental noise and reflectance variations. Furthermore, we introduce an attention-based feature ensemble that fuses high-level semantic representations from a supervised large backbone with low-frequency structural features from a chaos-pretrained tiny encoder. Experimental results on six texture benchmarks (FMD, UMD, KTH-TIPS2-b, DTD, GTOS, and 1200Tex) demonstrate the superiority of the proposed method, outperforming state-of-the-art approaches and achieving promising accuracies on all the analyzed datasets.
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