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MVDrag3D - A drag-and-drop multi-view 3D editing technology developed by Nanyang Technological University

MVDrag3D is an innovative 3D editing framework that combines multi-view generation and reconstruction priors to achieve flexible and creative drag-and-drop editing. The framework uses a multi-view diffusion model as a generation prior to ensure consistency across multiple rendered views...

What is MVDrag3D?

MVDrag3D is an innovative 3D editing framework that combines multi-view generation and reconstruction priors to achieve flexible and creative drag-and-drop editing. The framework uses a multi-view diffusion model as a generation prior to ensure consistent drag-and-drop editing across multiple rendered views. It reconstructs the 3D Gaussian representation of the editable object based on the reconstruction model, adjusts the Gaussian position using a view-specific deformation network to achieve alignment between views, and finally enhances view consistency and visual quality using a multi-view fractional function. MVDrag3D can handle significant topological changes and generate new textures across multiple object categories, supports various 3D representations such as 3D Gaussians and meshes, and exhibits accuracy, generativity, and flexibility.

Main functions of MVDrag3D

  • Multi-view consistency editingMVDrag3D enables consistent drag-and-drop editing across multiple orthographic views, ensuring that 3D editing operations remain consistent across different perspectives.
  • 3D Gaussian ReconstructionThe framework uses a reconstructed model to convert the edited 2D view into a 3D Gaussian representation, capturing the structure of the 3D object.
  • View AlignmentAdjusting the position of a 3D Gaussian based on a view-specific deformation network solves the alignment problem between different views.
  • Visual quality enhancementThe multi-view score function is used to extract the generation prior from multiple views, thereby enhancing the visual quality and view consistency of the final output.
  • Support diverse editingSuitable for a wide range of object categories and 3D representations, such as 3D Gaussians and meshes, providing a broader range of editing effects.
  • Handling topology changesHandles significant topological changes, such as generating new textures and structures during the editing process.

The technical principles of MVDrag3D

  • Multi-view diffusion modelAs a generation prior, the multi-view diffusion model is used to perform consistent drag-and-drop editing across multiple rendered views, ensuring the consistency of editing operations.
  • 3D Gaussian representation: The 3D Gaussian representation of a 3D object reconstructed from the edited view, a method for describing the probability distribution of 3D shapes.
  • View-specific deformation networkTo address potential alignment issues between different views of the initial 3D Gaussian, a deformable network is used to adjust the position of the Gaussian to achieve precise alignment.
  • Multi-view fractional functionWe propose a multi-view score function to extract generative priors from multiple views, thereby enhancing view consistency and improving visual quality.
  • Two-stage optimization processThe geometric alignment is improved by adjusting the position of Gaussians based on deformable networks, and the 3D Gaussians are refined using a multi-view scoring function under image conditions to enhance the visual quality of the final output.
  • DDIM Inversion and Random NoiseIntroducing random noise during the DDIM inversion process helps latent variables to more closely approximate a Gaussian distribution, improving the stability of the editing process and preserving object identity.

MVDrag3D project address

Application scenarios of MVDrag3D

  • 3D content creationArtists and designers can intuitively edit and create 3D models, such as game characters, movie special effects, and virtual environments.
  • Virtual Reality (VR) and Augmented Reality (AR)In VR and AR applications, real-time editing of 3D objects provides a more immersive user experience.
  • Computer-aided design (CAD)Engineers make precise modifications to the 3D model, accelerating the product design and iteration process.
  • Digital sculpting and modelingDigital artists create digital sculptures, simulating the intuitive operations of the traditional carving process.
  • Education and trainingIn the field of education, it serves as a teaching tool to help students better understand 3D space and geometric structures.
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