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Collaborating Authors

 Zheng, Sixiao


VidCRAFT3: Camera, Object, and Lighting Control for Image-to-Video Generation

arXiv.org Artificial Intelligence

Recent image-to-video generation methods have demonstrated success in enabling control over one or two visual elements, such as camera trajectory or object motion. However, these methods are unable to offer control over multiple visual elements due to limitations in data and network efficacy. In this paper, we introduce VidCRAFT3, a novel framework for precise image-to-video generation that enables control over camera motion, object motion, and lighting direction simultaneously. To better decouple control over each visual element, we propose the Spatial Triple-Attention Transformer, which integrates lighting direction, text, and image in a symmetric way. Since most real-world video datasets lack lighting annotations, we construct a high-quality synthetic video dataset, the VideoLightingDirection (VLD) dataset. This dataset includes lighting direction annotations and objects of diverse appearance, enabling VidCRAFT3 to effectively handle strong light transmission and reflection effects. Additionally, we propose a three-stage training strategy that eliminates the need for training data annotated with multiple visual elements (camera motion, object motion, and lighting direction) simultaneously. Extensive experiments on benchmark datasets demonstrate the efficacy of VidCRAFT3 in producing high-quality video content, surpassing existing state-of-the-art methods in terms of control granularity and visual coherence. All code and data will be publicly available.


TemporalStory: Enhancing Consistency in Story Visualization using Spatial-Temporal Attention

arXiv.org Artificial Intelligence

Story visualization presents a challenging task in text-to-image generation, requiring not only the rendering of visual details from text prompt but also ensuring consistency across images. Recently, most approaches address inconsistency problem using an auto-regressive manner conditioned on previous image-sentence pairs. However, they overlook the fact that story context is dispersed across all sentences. The auto-regressive approach fails to encode information from susequent image-sentence pairs, thus unable to capture the entirety of the story context. To address this, we introduce TemporalStory, leveraging Spatial-Temporal attention to model complex spatial and temporal dependencies in images, enabling the generation of coherent images based on a given storyline. In order to better understand the storyline context, we introduce a text adapter capable of integrating information from other sentences into the embedding of the current sentence. Additionally, to utilize scene changes between story images as guidance for the model, we propose the StoryFlow Adapter to measure the degree of change between images. Through extensive experiments on two popular benchmarks, PororoSV and FlintstonesSV, our TemporalStory outperforms the previous state-of-the-art in both story visualization and story continuation tasks.


Intelligent Director: An Automatic Framework for Dynamic Visual Composition using ChatGPT

arXiv.org Artificial Intelligence

With the rise of short video platforms represented by TikTok, the trend of users expressing their creativity through photos and videos has increased dramatically. However, ordinary users lack the professional skills to produce high-quality videos using professional creation software. To meet the demand for intelligent and user-friendly video creation tools, we propose the Dynamic Visual Composition (DVC) task, an interesting and challenging task that aims to automatically integrate various media elements based on user requirements and create storytelling videos. We propose an Intelligent Director framework, utilizing LENS to generate descriptions for images and video frames and combining ChatGPT to generate coherent captions while recommending appropriate music names. Then, the best-matched music is obtained through music retrieval. Then, materials such as captions, images, videos, and music are integrated to seamlessly synthesize the video. Finally, we apply AnimeGANv2 for style transfer. We construct UCF101-DVC and Personal Album datasets and verified the effectiveness of our framework in solving DVC through qualitative and quantitative comparisons, along with user studies, demonstrating its substantial potential.