通过动态分配全局与局部条件,提升少样本字体生成的结构完整性和细节保真度。
SmartFont: Dynamic Condition Allocation for Few-Shot Font Generation

- 采用扩散模型融合全局风格与弱监督局部修正专家
- 在多阶段动态加权条件,实现全局与局部平衡
- 无需显式组件条件即可精准修复局部细节,适合字体生成任务
少样本字体生成需同时保证整体结构完整与局部风格精细。现有方法或依赖全局内容-风格建模(鲁棒但解耦不充分),或强调部件/局部建模(捕捉细节但依赖局部先验和参考覆盖)。我们提出SmartFont,一种基于扩散模型的少样本字体生成框架,结合全局内容-风格生成与弱监督局部修正专家。局部分支通过学习专家级局部概念和语义空间图,在弱部件监督下实现语义-空间分配,无需显式组件条件即可进行细粒度修正。此外,去噪状态条件分配模块在时间步与注入块间自适应加权全局内容、全局风格与局部修正特征。大量实验表明,SmartFont实现了更优的全局-局部平衡,提升了字形质量和局部细节保真度。
原文摘要 · Abstract (English)
Few-shot font generation simultaneously requires global structural completeness and fine-grained local style fidelity. Existing methods usually either rely on global content-style modeling, which is robust but imperfectly disentangled, or emphasize component/local modeling, which captures fine details but relies heavily on local priors and reference coverage. We argue that the key challenge is not merely to learn purer conditions, but to organize complementary yet biased global and local conditions through multi-level allocation during generation. To this end, we propose SmartFont, a diffusion-based few-shot font generation framework that combines global content-style generation with weakly supervised local corrective experts. The local branch performs semantic-spatial allocation by learning expert-wise local concepts and semantically meaningful spatial maps under weak component supervision, enabling fine-grained correction without requiring explicit component-conditioned inference. On top of this, a denoising-state condition allocation module adaptively weights global content, global style, and local corrective feature across timesteps and injection blocks. Extensive experiments show that SmartFont achieves better global-local balance, improves glyph quality and local detail fidelity.
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