We present Magic123, a two-stage coarse-to-fine approach for high-quality,
textured 3D meshes generation from a single unposed image in the wild using
both2D and 3D priors. In the first stage, we optimize a neural radiance field
to produce a coarse geometry. In the second stage, we adopt a memory-efficient
differentiable mesh representation to yield a high-resolution mesh with a
visually appealing texture. In both stages, the 3D content is learned through
reference view supervision and novel views guided by a combination of 2D and 3D
diffusion priors. We introduce a single trade-off parameter between the 2D and
3D priors to control exploration (more imaginative) and exploitation (more
precise) of the generated geometry. Additionally, we employ textual inversion
and monocular depth regularization to encourage consistent appearances across
views and to prevent degenerate solutions, respectively. Magic123 demonstrates
a significant improvement over previous image-to-3D techniques, as validated
through extensive experiments on synthetic benchmarks and diverse real-world
images. Our code, models, and generated 3D assets are available at
this https URL

Magic123 提出通过使用 2D 和 3D 先验知识，用单张无姿态图像实现高质量纹理 3D 网格的生成，通过参考视图监督和新视角的结合引导学习 3D 内容，并在训练过程中引入单一权衡参数控制对生成几何结构的探索和开发。此外，该模型采用文本反演和单目深度正则化以保证视角一致性和防止退化解，并在综合合成和真实场景测试中体现了较大提升。