Accurate Story visualization requires several necessary elements, such as identity consistency across frames, the alignment between plain text and visual content, and a reasonable layout of objects in images. Most previous works endeavor to meet these requirements by fitting a text-to-image (T2I) model on a set of videos in the same style and with the same characters, e.g., the FlintstonesSV dataset. However, the learned T2I models typically struggle to adapt to new characters, scenes, and styles, and often lack the flexibility to revise the layout of the synthesized images. This paper proposes a system for generic interactive story visualization, capable of handling multiple novel characters and supporting the editing of layout and local structure. It is developed by leveraging the prior knowledge of large language and T2I models, trained on massive corpora. The system comprises four interconnected components: story-to-prompt generation (S2P), text-to-layout generation (T2L), controllable text-to-image generation (C-T2I), and image-to-video animation (I2V). First, the S2P module converts concise story information into detailed prompts required for subsequent stages. Next, T2L generates diverse and reasonable layouts based on the prompts, offering users the ability to adjust and refine the layout to their preference. The core component, C-T2I, enables the creation of images guided by layouts, sketches, and actor-specific identifiers to maintain consistency and detail across visualizations. Finally, I2V enriches the visualization process by animating the generated images. Extensive experiments and a user study are conducted to validate the effectiveness and flexibility of interactive editing of the proposed system.
翻译:准确的故事可视化需要多个必要元素,例如跨帧的角色一致性、纯文本与视觉内容的对齐,以及图像中物体的合理布局。以往大多数研究通过在同一风格且角色固定的视频集(如FlintstonesSV数据集)上拟合文本到图像(T2I)模型来满足这些要求。然而,所学习的T2I模型通常难以适应新角色、新场景和新风格,且往往缺乏灵活调整合成图像布局的能力。本文提出了一种面向通用交互式故事可视化的系统,该系统能够处理多个未见角色,并支持布局与局部结构的编辑。该系统的开发基于大规模语言模型和T2I模型的先验知识,这些模型在大规模语料库上训练而成。系统包含四个相互关联的模块:故事到提示词生成(S2P)、文本到布局生成(T2L)、可控文本到图像生成(C-T2I)以及图像到视频动画(I2V)。首先,S2P模块将简洁的故事信息转换为后续阶段所需的详细提示词。其次,T2L根据提示词生成多样且合理的布局,并允许用户按偏好调整和优化布局。核心组件C-T2I能够基于布局、草图及角色特定标识符生成图像,从而在可视化过程中保持角色一致性与细节。最后,I2V通过将生成的图像动画化来丰富可视化流程。本文通过大量实验和用户研究验证了所提系统的有效性及其在交互式编辑中的灵活性。