CLIP Brings Better Features to Visual Aesthetics Learners

• URL: http://arxiv.org/abs/2307.15640v1
• Date: Fri, 28 Jul 2023 16:00:21 GMT
• Title: CLIP Brings Better Features to Visual Aesthetics Learners
• Authors: Liwu Xu, Jinjin Xu, Yuzhe Yang, Yijie Huang, Yanchun Xie, Yaqian Li
• Abstract summary: Image aesthetics assessment (IAA) is one of the ideal application scenarios for such methods due to subjective and expensive labeling procedure. In this work, an unified and flexible two-phase textbfCLIP-based textbfSemi-supervised textbfKnowledge textbfDistillation paradigm is proposed, namely textbftextitCSKD.
• Score: 12.0962117940694
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The success of pre-training approaches on a variety of downstream tasks has revitalized the field of computer vision. Image aesthetics assessment (IAA) is one of the ideal application scenarios for such methods due to subjective and expensive labeling procedure. In this work, an unified and flexible two-phase \textbf{C}LIP-based \textbf{S}emi-supervised \textbf{K}nowledge \textbf{D}istillation paradigm is proposed, namely \textbf{\textit{CSKD}}. Specifically, we first integrate and leverage a multi-source unlabeled dataset to align rich features between a given visual encoder and an off-the-shelf CLIP image encoder via feature alignment loss. Notably, the given visual encoder is not limited by size or structure and, once well-trained, it can seamlessly serve as a better visual aesthetic learner for both student and teacher. In the second phase, the unlabeled data is also utilized in semi-supervised IAA learning to further boost student model performance when applied in latency-sensitive production scenarios. By analyzing the attention distance and entropy before and after feature alignment, we notice an alleviation of feature collapse issue, which in turn showcase the necessity of feature alignment instead of training directly based on CLIP image encoder. Extensive experiments indicate the superiority of CSKD, which achieves state-of-the-art performance on multiple widely used IAA benchmarks.

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