Image captioning is a multimodal problem that has drawn extensive attention in both the natural language processing and computer vision community. In this paper, we present a novel image captioning architecture to better explore semantics available in captions and leverage that to enhance both image representation and caption generation. Our models first construct caption-guided visual relationship graphs that introduce beneficial inductive bias using weakly supervised multi-instance learning. The representation is then enhanced with neighbouring and contextual nodes with their textual and visual features. During generation, the model further incorporates visual relationships using multi-task learning for jointly predicting word and object/predicate tag sequences. We perform extensive experiments on the MSCOCO dataset, showing that the proposed framework significantly outperforms the baselines, resulting in the state-of-the-art performance under a wide range of evaluation metrics.

本文提出了一种新的图像字幕架构，通过构建以字幕为导向的视觉关系图以及利用弱监督多实例学习引入有益的归纳偏差来增强图像表示和字幕生成，实现多模态问题解决和优化。在MSCOCO数据集上进行广泛实验，证明该框架在多种评估指标下取得了业内最优表现。

更好地利用图片描述提升图像字幕质量