  Utilizing pre-trained 2D large-scale generative models, recent works are
capable of generating high-quality novel views from a single in-the-wild image.
However, due to the lack of information from multiple views, these works
encounter difficulties in generating controllable novel views. In this paper,
we present DreamComposer, a flexible and scalable framework that can enhance
existing view-aware diffusion models by injecting multi-view conditions.
Specifically, DreamComposer first uses a view-aware 3D lifting module to obtain
3D representations of an object from multiple views. Then, it renders the
latent features of the target view from 3D representations with the multi-view
feature fusion module. Finally the target view features extracted from
multi-view inputs are injected into a pre-trained diffusion model. Experiments
show that DreamComposer is compatible with state-of-the-art diffusion models
for zero-shot novel view synthesis, further enhancing them to generate
high-fidelity novel view images with multi-view conditions, ready for
controllable 3D object reconstruction and various other applications.
