通过残差分析优化360图像质量评估数据,仅用40%-50%样本达更高性能。
Embedding-Driven Data Distillation for 360-Degree IQA With Residual-Aware Refinement
- 基于嵌入相似性与残差分析筛选关键图像块,减少冗余。
- 在三大数据集上仅用40%-50%样本即超越全量数据训练效果。
- 适配主流CNN与Transformer模型,降低20%-40%计算开销。
本文针对360度图像质量评估(IQA)中数据驱动方法的瓶颈——缺乏智能样本级数据选择,提出一种新框架。该框架在图像块采样与模型训练之间引入关键精炼步骤,核心为基于嵌入相似性的选择算法,将初始冗余块集提炼为紧凑且信息量最大的子集。该过程被建模为带正则化的优化问题,保留低维空间中的内在感知关系,并利用残差分析显式剔除无关或冗余样本。在三个基准数据集(CVIQ、OIQA、MVAQD)上的大量实验表明,该选择策略使基线模型在仅保留40%-50%图像块的情况下,性能可匹配甚至超过使用全部采样数据的结果。尤其重要的是,该方法具有通用性,可无缝集成至多种先进IQA模型(包括CNN与Transformer架构),稳定实现20%-40%的计算负载降低,同时保持或提升性能。本工作证明:自适应的后采样数据精炼是实现高效且鲁棒360度IQA的强大通用策略。
原文摘要 · Abstract (English)
This article identifies and addresses a fundamental bottleneck in data-driven 360-degree image quality assessment (IQA): the lack of intelligent, sample-level data selection. Hence, we propose a novel framework that introduces a critical refinement step between patches sampling and model training. The core of our contribution is an embedding similarity-based selection algorithm that distills an initial, potentially redundant set of patches into a compact, maximally informative subset. This is formulated as a regularized optimization problem that preserves intrinsic perceptual relationships in a low-dimensional space, using residual analysis to explicitly filter out irrelevant or redundant samples. Extensive experiments on three benchmark datasets (CVIQ, OIQA, MVAQD) demonstrate that our selection enables a baseline model to match or exceed the performance of using all sampled data while keeping only 40-50% of patches. Particularly, we demonstrate the universal applicability of our approach by integrating it with several state-of-the-art IQA models, incleasy to deploy. Most significantly, its value as a generic,uding CNN- and transformer-based architectures, consistently enabling them to maintain or improve performance with 20-40\% reduced computational load. This work establishes that adaptive, post-sampling data refinement is a powerful and widely applicable strategy for achieving efficient and robust 360-degree IQA.
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