Hi3D 开源 v1.0 图生 3D 模型，切片成功率 90% 远超竞品
Hi3D 把自家图生 3D 模型开源了，背面和细节不会糊掉，3D 打印成功率 90%，比 TRELLIS.2 的 17% 高太多，可免费商用。
Hi3D（原 Sparc3D）开源了 v1.0 图生 3D 模型，代码和权重放在 GitHub 与 Hugging Face，可免费商用（月活 20 万或月收入 100 万美元以内）。模型以图片加粗略网格为输入，在 512、1024、1536 三档体素分辨率上逐步细化，采用稀疏计算只处理表面附近的立方体。训练数据从 50 万扩充到约 200 万条精选 3D 资产。对比 TRELLIS.2 和 Hunyuan3D-2.1 等 8 个模型，它在多视角一致性上拿到 0.75、细节丰富度 0.841，切片打印成功率 90%，而同为 1536 分辨率的 Pixal3D 只有 7%，TRELLIS.2 为 17%。13 名专业评审的 562 次对比盲测中，它被选中 83.5%。
This is so good for open 3D generation. last year’s cutting-edge technology, open-sourced this year
@Hi3D_AI has open-sourced Hi3D v1.0 (formerly Sparc3D), an image-to-3D model that holds together from every angle and already ran in Hi3D’s live product before release.
> Anyone can run it privately on their own servers, connect it to their internal systems, and build tools and apps for their industry on top of it. > Code and weights are on GitHub and Hugging Face, free to use including commercially,
Most image-to-3D models get judged by how the front looks, so the back, the bottom and thin parts like wings, horns and handles often come out blobby, broken or missing.
Hi3D v1.0 takes the image plus a rough draft shape (a “coarse mesh” from another model) and sharpens it in 3 passes, at 512, 1024 and 1536 resolution.
Resolution here means the space around the object is cut into tiny cubes called voxels, basically 3D pixels, and 1536 means 1536 cubes along each side.
That full grid would hold over 3.6B cubes, so the model works sparse, only touching cubes near the surface and skipping empty air and the solid inside.
In each pass, a “self-pruning” decoder rebuilds the surface at 8x finer scale and drops cubes that turn out empty.
Training data grew from 500K to about 2M curated 3D assets.
Against 8 other image-to-3D models, including TRELLIS.2 and Hunyuan3D-2.1, it scored best on multi-view fidelity (0.75), which checks the shape stays consistent and unbroken from 6 camera angles, and detail richness (0.841), which grades fine surface relief and small parts.
It also kept a 90% slicing success rate, the share of models a 3D printer’s software could cut into print layers, versus 7% for Pixal3D, the only other model at 1536, and 17% for TRELLIS.2.
In 562 side-by-side ratings by 13 people with professional 3D experience, Hi3D v1.0 was picked 83.5% of the time.
It outputs shape only (no colors or textures), needs an NVIDIA GPU, and the code and weights are free for commercial use up to 200K monthly users or $1M monthly revenue.
And Hi3D 1.0 Is Now Open Source
https://t.co/AaRHAfa3Bu
- kimmonismus10-26 15:43原文
