Diverse Image Captioning with Grounded Style

• URL: http://arxiv.org/abs/2205.01813v1
• Date: Tue, 3 May 2022 22:57:59 GMT
• Title: Diverse Image Captioning with Grounded Style
• Authors: Franz Klein, Shweta Mahajan, Stefan Roth
• Abstract summary: We propose COCO-based augmentations to obtain varied stylized captions from COCO annotations. We encode the stylized information in the latent space of a Variational Autoencoder. Our experiments on the Senticap and COCO datasets show the ability of our approach to generate accurate captions.
• Score: 19.434931809979282
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Stylized image captioning as presented in prior work aims to generate captions that reflect characteristics beyond a factual description of the scene composition, such as sentiments. Such prior work relies on given sentiment identifiers, which are used to express a certain global style in the caption, e.g. positive or negative, however without taking into account the stylistic content of the visual scene. To address this shortcoming, we first analyze the limitations of current stylized captioning datasets and propose COCO attribute-based augmentations to obtain varied stylized captions from COCO annotations. Furthermore, we encode the stylized information in the latent space of a Variational Autoencoder; specifically, we leverage extracted image attributes to explicitly structure its sequential latent space according to different localized style characteristics. Our experiments on the Senticap and COCO datasets show the ability of our approach to generate accurate captions with diversity in styles that are grounded in the image.

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