ZeroCap: Zero-Shot Image-to-Text Generation for Visual-Semantic Arithmetic [article]

Yoad Tewel, Yoav Shalev, Idan Schwartz, Lior Wolf
2022 arXiv   pre-print
Recent text-to-image matching models apply contrastive learning to large corpora of uncurated pairs of images and sentences. While such models can provide a powerful score for matching and subsequent zero-shot tasks, they are not capable of generating caption given an image. In this work, we repurpose such models to generate a descriptive text given an image at inference time, without any further training or tuning steps. This is done by combining the visual-semantic model with a large language
more » ... model, benefiting from the knowledge in both web-scale models. The resulting captions are much less restrictive than those obtained by supervised captioning methods. Moreover, as a zero-shot learning method, it is extremely flexible and we demonstrate its ability to perform image arithmetic in which the inputs can be either images or text, and the output is a sentence. This enables novel high-level vision capabilities such as comparing two images or solving visual analogy tests. Our code is available at:
arXiv:2111.14447v2 fatcat:vfowvq2qofbt3aef4l5swdanum