Text-only Synthesis for Image Captioning

• URL: http://arxiv.org/abs/2405.18258v1
• Date: Tue, 28 May 2024 15:11:17 GMT
• Title: Text-only Synthesis for Image Captioning
• Authors: Qing Zhou, Junlin Huang, Qiang Li, Junyu Gao, Qi Wang,
• Abstract summary: We propose Text-only Synthesis for Image Captioning (ToCa) We deconstruct caption text into structures and lexical words. Massive captions that contain various patterns of lexical words are generated.
• Score: 26.774411180980994
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: From paired image-text training to text-only training for image captioning, the pursuit of relaxing the requirements for high-cost and large-scale annotation of good quality data remains consistent. In this paper, we propose Text-only Synthesis for Image Captioning (ToCa), which further advances this relaxation with fewer human labor and less computing time. Specifically, we deconstruct caption text into structures and lexical words, which serve as the fundamental components of the caption. By combining different structures and lexical words as inputs to the large language model, massive captions that contain various patterns of lexical words are generated. This method not only approaches the target domain but also surpasses it by generating new captions, thereby enhancing the zero-shot generalization ability of the model. Considering the different levels of data access in the real world, we define three synthesis scenarios: cross-domain synthesis, in-domain synthesis, and data-efficient synthesis. Experiments in these scenarios demonstrate the generalizability, transferability and practicability of ToCa with a nearly 5 CIDEr improvement for zero-shot cross-domain captioning and a maximum increase of over 20 CIDEr for data-efficient captioning.

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