arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.16136cs.CVcs.AIcs.CLcs.MM
收藏

HA-FGOVD:通过显式线性组合突出细粒度属性用于开放词汇目标检测

HA-FGOVD: Highlighting Fine-grained Attributes via Explicit Linear Composition for Open-Vocabulary Object Detection

School of Computer and Communication Engineering, University of Science and Technology Beijing(北京科技大学计算机与通信工程学院)

Yuqi Ma, Mengyin Liu, Chao Zhu, Xu-Cheng Yin

AI总结:

本文提出HA-FGOVD方法,通过在显式线性空间中突出细粒度属性,利用LLM识别属性词并组合全局与属性特征,提升冻结主流OVD模型的属性级检测能力,在FG-OVD上达到新最优。

摘要:

开放词汇目标检测(OVD)模型因其大规模训练数据和大量参数而被视为大型多模态模型(LMM)。主流OVD模型优先关注目标的粗粒度类别,而非其细粒度属性(如颜色或材质),因此无法识别带有特定属性描述的目标。然而,OVD模型在大规模图文对上预训练,这些数据包含丰富的属性词,其潜在特征空间可以将全局文本特征表示为细粒度属性token的线性组合,但并未对这些属性进行突出。因此,本文提出一种通用且显式的方法,适用于冻结的主流OVD模型,通过在显式线性空间中突出细粒度属性来提升其属性级检测能力。首先,利用大语言模型(LLM)以零样本提示任务的方式突出输入文本中的属性词。其次,通过策略性调整token掩码,OVD模型的文本编码器同时提取全局文本特征和属性特定特征,随后将二者在线性空间中显式组合为两个向量,形成新的属性突出特征用于检测任务,其中对应的标量通过手工设计或学习得到,用于对两个向量进行重新加权。值得注意的是,这些标量可以在不同OVD模型之间无缝迁移,证明了这种显式线性组合具有通用性。在FG-OVD数据集上的实验评估表明,本文方法一致提升了各种主流模型的细粒度属性级OVD性能,并取得了新的最先进结果。

英文摘要:

Open-vocabulary object detection (OVD) models are considered to be Large Multi-modal Models (LMM), due to their extensive training data and a large number of parameters. Mainstream OVD models prioritize object coarse-grained category rather than focus on their fine-grained attributes, e.g., colors or materials, thus failed to identify objects specified with certain attributes. However, OVD models are pretrained on large-scale image-text pairs with rich attribute words, whose latent feature space can represent the global text feature as a linear composition of fine-grained attribute tokens without highlighting them. Therefore, we propose in this paper a universal and explicit approach for frozen mainstream OVD models that boosts their attribute-level detection capabilities by highlighting fine-grained attributes in explicit linear space. Firstly, a LLM is leveraged to highlight attribute words within the input text as a zero-shot prompted task. Secondly, by strategically adjusting the token masks, the text encoders of OVD models extract both global text and attribute-specific features, which are then explicitly composited as two vectors in linear space to form the new attribute-highlighted feature for detection tasks, where corresponding scalars are hand-crafted or learned to reweight both two vectors. Notably, these scalars can be seamlessly transferred among different OVD models, which proves that such an explicit linear composition is universal. Empirical evaluation on the FG-OVD dataset demonstrates that our proposed method uniformly improves fine-grained attribute-level OVD of various mainstream models and achieves new state-of-the-art performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑