Surface reconstruction from raw point clouds has been studied for decades in
the computer graphics community, which is highly demanded by modeling and
rendering applications nowadays. Classic solutions, such as Poisson surface
reconstruction, require point normals as extra input to perform reasonable
results. Modern transformer-based methods can work without normals, while the
results are less fine-grained due to limited encoding performance in local
fusion from discrete points. We introduce a novel normalized matrix attention
transformer (Tensorformer) to perform high-quality reconstruction. The proposed
matrix attention allows for simultaneous point-wise and channel-wise message
passing, while the previous vector attention loses neighbor point information
across different channels. It brings more degree of freedom in feature learning
and thus facilitates better modeling of local geometries. Our method achieves
state-of-the-art on two commonly used datasets, ShapeNetCore and ABC, and
attains 4% improvements on IOU on ShapeNet. Our implementation will be released
upon acceptance.

通过引入新的矩阵关注 Transformer（Tensorformer）来实现更好的局部几何建模和更高质量的表面重建，成果在两个常用的数据集上均已超越同行，并在 ShapeNet 上取得 4％的 IOU 改进。