Ultraman: Ultra-Fast and High-Resolution Texture Generation for 3D Human Reconstruction from a Single Image

The reconstruction of textured 3D human models from a single image is a fundamental task with wide-ranging applications in fields such as virtual reality, gaming, and digital human rendering. Current approaches, however, are often time-consuming and struggle to accurately capture detailed texture information, limiting their practicality in real-time applications. To address this, we propose a novel method, \textbf{Ultraman}, which significantly accelerates the reconstruction process while enhancing the accuracy and preserving high-quality texture details. Our method is built on three core modules: (1) a geometric reconstruction framework that extracts accurate 3D human shapes from a single image; (2) a texture generation approach that produces multi-view consistent images based on the input image; and (3) a novel texture mapping technique that optimizes texture details and ensures color consistency throughout the reconstruction process. Extensive experiments on standard datasets demonstrate that Ultraman outperforms state-of-the-art methods in both rendering quality and speed, establishing a new benchmark for fast, high-fidelity 3D human reconstruction. Our contributions include the introduction of a new framework for efficient and accurate texture generation, as well as a robust evaluation showing significant improvements over existing techniques. Code is available for research purposes at https://ultraman-code.github.io