Determining which image regions to concentrate on is critical for
Human-Object Interaction (HOI) detection. Conventional HOI detectors focus on
either detected human and object pairs or pre-defined interaction locations,
which limits learning of the effective features. In this paper, we reformulate
HOI detection as an adaptive set prediction problem, with this novel
formulation, we propose an Adaptive Set-based one-stage framework (AS-Net) with
parallel instances and interaction branches. To attain this, we map a trainable
interaction query set to an interaction prediction set with a transformer. Each
query adaptively aggregates the interaction-relevant features from global
contexts through multi-head co-attention. Besides, the training process is
supervised adaptively by matching each ground truth with the interaction
prediction. Furthermore, we design an effective instance-aware attention module
to introduce instructive features from the instance branch into the interaction
branch. Our method outperforms previous state-of-the-art methods without any
extra human pose and language features on three challenging HOI detection
datasets. Especially, we achieve over $31\%$ relative improvement on a
large-scale HICO-DET dataset. Code is available at
this https URL

本文提出一种基于 Adaptive Set Prediction 的 AS-Net 框架，通过多头注意力聚合查询集和全局上下文推理交互相关特征，同时使用实例感知注意模块将实例分支的特征引入交互分支，以实现更为准确高效的人物 - 物体交互检测。本方法在三个 HOI 检测数据集上实现比前沿方法更好的结果，尤其在大规模 HICO-DET 数据集上，相对于之前的最优结果实现了超过 31% 的性能提升。