Multi-label image recognition is a practical and challenging task compared to single-label image classification. However, previous works may be suboptimal because of a great number of object proposals or complex attentional region generation modules. In this paper, we propose a simple but efficient two-stream framework to recognize multi-category objects from global image to local regions, similar to how human beings perceive objects. To bridge the gap between global and local streams, we propose a multi-class attentional region module which aims to make the number of attentional regions as small as possible and keep the diversity of these regions as high as possible. Our method can efficiently and effectively recognize multi-class objects with an affordable computation cost and a parameter-free region localization module. Over three benchmarks on multi-label image classification, we create new state-of-the-art results with a single model only using image semantics without label dependency. In addition, the effectiveness of the proposed method is extensively demonstrated under different factors such as global pooling strategy, input size and network architecture.

本文提出了一种简单而高效的双流框架方法，使用全局图像到局部区域的方法识别多类别目标，并提出了多类关注区域模块（MCAR）来解决关注区域数量过多，生成复杂问题，这种方法仅使用图像语义就可以创建新的最佳结果，并在不同因素下进行了广泛的展示。

学习发现多类别注意力区域用于多标签图像识别