DragEntity: Trajectory Guided Video Generation using Entity and Positional Relationships

TL;DR

DragEntity introduces a user-friendly video generation method that uses entity representations to control multiple objects' trajectories simultaneously, enabling complex, fine-grained motion control without requiring difficult-to-obtain conditions.

Contribution

It presents a novel entity-based control approach for video generation that simplifies user interaction and supports multiple objects with complex trajectories.

Findings

Effective fine-grained control demonstrated in experiments

Supports multiple objects with different trajectories

Maintains relative spatial relationships between objects

Abstract

In recent years, diffusion models have achieved tremendous success in the field of video generation, with controllable video generation receiving significant attention. However, existing control methods still face two limitations: Firstly, control conditions (such as depth maps, 3D Mesh) are difficult for ordinary users to obtain directly. Secondly, it's challenging to drive multiple objects through complex motions with multiple trajectories simultaneously. In this paper, we introduce DragEntity, a video generation model that utilizes entity representation for controlling the motion of multiple objects. Compared to previous methods, DragEntity offers two main advantages: 1) Our method is more user-friendly for interaction because it allows users to drag entities within the image rather than individual pixels. 2) We use entity representation to represent any object in the image, and multiple objects can maintain relative spatial relationships. Therefore, we allow multiple trajectories to control multiple objects in the image with different levels of complexity simultaneously. Our experiments validate the effectiveness of DragEntity, demonstrating its excellent performance in fine-grained control in video generation.