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MIMO: Controllable Character Video Synthesis with Spatial Decomposed Modeling

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arxiv 2409.16160 v2 pith:WBQ2B3MU submitted 2024-09-24 cs.CV

classification cs.CV
keywords scenevideocharacterspatialsynthesischaracterscodemodeling
verification ladder T0 review T1 audit T2 compute T3 formal
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Character video synthesis aims to produce realistic videos of animatable characters within lifelike scenes. As a fundamental problem in the computer vision and graphics community, 3D works typically require multi-view captures for per-case training, which severely limits their applicability of modeling arbitrary characters in a short time. Recent 2D methods break this limitation via pre-trained diffusion models, but they struggle for pose generality and scene interaction. To this end, we propose MIMO, a novel framework which can not only synthesize character videos with controllable attributes (i.e., character, motion and scene) provided by simple user inputs, but also simultaneously achieve advanced scalability to arbitrary characters, generality to novel 3D motions, and applicability to interactive real-world scenes in a unified framework. The core idea is to encode the 2D video to compact spatial codes, considering the inherent 3D nature of video occurrence. Concretely, we lift the 2D frame pixels into 3D using monocular depth estimators, and decompose the video clip to three spatial components (i.e., main human, underlying scene, and floating occlusion) in hierarchical layers based on the 3D depth. These components are further encoded to canonical identity code, structured motion code and full scene code, which are utilized as control signals of synthesis process. The design of spatial decomposed modeling enables flexible user control, complex motion expression, as well as 3D-aware synthesis for scene interactions. Experimental results demonstrate effectiveness and robustness of the proposed method.

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Forward citations

Cited by 10 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. MultiAnimate: A Unified Framework for Controllable Multi-Character Animation

    cs.CV 2026-07 conditional novelty 6.0 of 10

    A diffusion-based framework that animates multiple characters in one scene from separate reference images and pose sequences while preserving each character's identity.

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    Skeleton-based visual action prompts give precise, cross-domain action control for video generation of human and robot interactions.

  3. PERSONA: Personalized Whole-Body 3D Avatar with Pose-Driven Deformations from a Single Image

    cs.CV 2025-08 conditional novelty 6.0 of 10

    PERSONA creates a personalized 3D avatar from one image by using diffusion-generated pose-rich videos to train a 3D Gaussian avatar with balanced sampling and geometry-weighted optimization.

  4. Vid-CamEdit: Video Camera Trajectory Editing with Generative Rendering from Estimated Geometry

    cs.CV 2025-06 conditional novelty 6.0 of 10

    Vid-CamEdit re-synthesizes monocular videos along user-defined camera paths by conditioning a video diffusion model on 2D flows derived from estimated 3D geometry, without training on multi-view video data.

  5. DreamActor-H1: High-Fidelity Human-Product Demonstration Video Generation via Motion-designed Diffusion Transformers

    cs.CV 2025-06 conditional novelty 6.0 of 10

    A diffusion transformer model generates human-product demonstration videos from paired human and product images while preserving both identities through masked cross-attention and motion template guidance.

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    cs.CV 2025-06 conditional novelty 6.0 of 10

    HunyuanVideo-HOMA generates human-object interaction videos from weak, sparse inputs: one arm pose, an object center dot, a human photo, and an object photo.

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    cs.CV 2025-05 conditional novelty 6.0 of 10

    DreamDance animates a single character artwork by reconstructing its background as a 3D Gaussian scene and then inpainting the animated character into the rendered video.

  8. AniCrafter: Customizing Realistic Human-Centric Animation via Avatar-Background Conditioning in Video Diffusion Models

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    A diffusion model animates a character into arbitrary dynamic backgrounds by conditioning on a rendered 3D-avatar video, reframing open-domain animation as a restoration problem.

  9. Drive Any Mesh: 4D Latent Diffusion for Mesh Deformation from Video

    cs.CV 2025-06 conditional novelty 5.0 of 10

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