The recent progress in diffusion-based text-to-image generation models has
significantly expanded generative capabilities via conditioning the text
descriptions. However, since relying solely on text prompts is still
restrictive for fine-grained customization, we aim to extend the boundaries of
conditional generation to incorporate diverse types of modalities, e.g.,
sketch, box, and style embedding, simultaneously. We thus design a multimodal
text-to-image diffusion model, coined as DiffBlender, that achieves the
aforementioned goal in a single model by training only a few small
hypernetworks. DiffBlender facilitates a convenient scaling of input
modalities, without altering the parameters of an existing large-scale
generative model to retain its well-established knowledge. Furthermore, our
study sets new standards for multimodal generation by conducting quantitative
and qualitative comparisons with existing approaches. By diversifying the
channels of conditioning modalities, DiffBlender faithfully reflects the
provided information or, in its absence, creates imaginative generation.

通过设计一种多模态文本到图像扩散模型（DiffBlender），可以同时引入多种不同类型的细节表达方式，如草图、盒子和风格嵌入等，不需要更改现有模型的参数，从而在单个模型中实现条件生成，并且通过量化和定性比较，将多模态生成的标准提高到了新的水平。