Instructive3D: Editing Large Reconstruction Models with Text Instructions

• URL: http://arxiv.org/abs/2501.04374v1
• Date: Wed, 08 Jan 2025 09:28:25 GMT
• Title: Instructive3D: Editing Large Reconstruction Models with Text Instructions
• Authors: Kunal Kathare, Ankit Dhiman, K Vikas Gowda, Siddharth Aravindan, Shubham Monga, Basavaraja Shanthappa Vandrotti, Lokesh R Boregowda,
• Abstract summary: Instructive3D is a novel LRM based model that integrates generation and fine-grained editing, through user text prompts, of 3D objects into a single model. We find that Instructive3D produces superior 3D objects with the properties specified by the edit prompts.
• Score: 2.9575146209034853
• License:
• Abstract: Transformer based methods have enabled users to create, modify, and comprehend text and image data. Recently proposed Large Reconstruction Models (LRMs) further extend this by providing the ability to generate high-quality 3D models with the help of a single object image. These models, however, lack the ability to manipulate or edit the finer details, such as adding standard design patterns or changing the color and reflectance of the generated objects, thus lacking fine-grained control that may be very helpful in domains such as augmented reality, animation and gaming. Naively training LRMs for this purpose would require generating precisely edited images and 3D object pairs, which is computationally expensive. In this paper, we propose Instructive3D, a novel LRM based model that integrates generation and fine-grained editing, through user text prompts, of 3D objects into a single model. We accomplish this by adding an adapter that performs a diffusion process conditioned on a text prompt specifying edits in the triplane latent space representation of 3D object models. Our method does not require the generation of edited 3D objects. Additionally, Instructive3D allows us to perform geometrically consistent modifications, as the edits done through user-defined text prompts are applied to the triplane latent representation thus enhancing the versatility and precision of 3D objects generated. We compare the objects generated by Instructive3D and a baseline that first generates the 3D object meshes using a standard LRM model and then edits these 3D objects using text prompts when images are provided from the Objaverse LVIS dataset. We find that Instructive3D produces qualitatively superior 3D objects with the properties specified by the edit prompts.

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