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arXiv · 2312.13631

Diff-Oracle: Deciphering Oracle Bone Scripts with Controllable Diffusion Model

Jing Li·Qiu-Feng Wang·Siyuan Wang·Rui Zhang·Kaizhu Huang·Erik Cambria
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Abstract

Deciphering oracle bone scripts plays an important role in Chinese archaeology and philology. However, a significant challenge remains due to the scarcity of oracle character images. To overcome this issue, we propose Diff-Oracle, a novel approach based on diffusion models to generate a diverse range of controllable oracle characters. Unlike traditional diffusion models that operate primarily on text prompts, Diff-Oracle incorporates a style encoder that utilizes style reference images to control the generation style. This encoder extracts style prompts from existing oracle character images, where style details are converted into a text embedding format via a pretrained language-vision model. On the other hand, a content encoder is integrated within Diff-Oracle to capture specific content details from content reference images, ensuring that the generated characters accurately represent the intended glyphs. To effectively train Diff-Oracle, we pre-generate pixel-level paired oracle character images (i.e., style and content images) by an image-to-image translation model. Extensive qualitative and quantitative experiments are conducted on datasets Oracle-241 and OBC306. While significantly surpassing present generative methods in terms of image generation, Diff-Oracle substantially benefits downstream oracle character recognition, outperforming all existing SOTAs by a large margin. In particular, on the challenging OBC306 dataset, Diff-Oracle leads to an accuracy gain of 7.70% in the zero-shot setting and is able to recognize unseen oracle character images with the accuracy of 84.62%, achieving a new benchmark for deciphering oracle bone scripts.

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Jing Li, Qiu-Feng Wang, Siyuan Wang, Rui Zhang, Kaizhu Huang, Erik Cambria. 2023-12-21. Diff-Oracle: Deciphering Oracle Bone Scripts with Controllable Diffusion Model. https://arxiv.org/abs/2312.13631

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