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SuperCap: Multi-resolution Superpixel-Based Image Captioning
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AI
DOI：10.1007/978-981-95-4398-4_1.png)
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Abstract
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It has been a longstanding goal within image captioning to move beyond a dependence on object detection. We investigate using superpixels coupled with Vision Language Models (VLMs) to bridge the gap between detector-based captioning architectures and those that solely pretrain on large datasets. Our novel superpixel approach ensures that the model receives object-like features whilst the use of VLMs provides our model with open set object understanding. Furthermore, we extend our architecture to make use of multi-resolution inputs, allowing our model to view images in different levels of detail, and use an attention mechanism to determine which parts are most relevant to the caption. We demonstrate our models performance with multiple VLMs and through a range of ablations detailing the impact of different architectural choices. Our full model achieves a competitive CIDEr score of 136.9 on the COCO Karpathy split.
Keywords:
Image Captioning
Vision-Language
Superpixels
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