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arXiv · 2608.09597

ResemBrick: Brick Reconstruction from Photographs with Perceptual Fidelity and Buildability

Xilun Chen·Hanwen Wan·Yusong Zhao·Zexin Lin·Ruixiang Liao·Xiaoqiang Ji
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Abstract

Producing a hand-buildable, colored brick model of a 3D object from a few casual photographs is a clean testbed for a broader challenge: generating 3D content that meets hard physical-assembly constraints under a discrete, budget-limited voxel grid. On a coarse lattice, visual resemblance and structural stability pull against each other, yet prior brick pipelines address only one side and treat voxelization as fixed preprocessing rather than a variable to optimize. We present ResemBrick, which couples the two. Budgeted occupancy completion reframes discretization as allocation: given a target occupied-voxel count, a single resolution-conditioned network decides in one feed-forward pass which surface voxels to fill for best appearance, one weight set spanning 13 resolutions. Buildability by construction then combines support- and look-ahead-aware greedy placement with a deterministic, provably terminating repair that grounds every floating component. Under a matched budget, ResemBrick surpasses existing voxel selectors in perceptual fidelity while uniquely reaching zero floating and zero unstable bricks on unfiltered held-out objects; as a complete pipeline, it attains the best perceptual fidelity among prior brick-construction systems. Our results point to treating discretization and assembly as tightly coupled stages rather than independent ones.

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Xilun Chen, Hanwen Wan, Yusong Zhao, Zexin Lin, Ruixiang Liao, Xiaoqiang Ji. 2026-08-10. ResemBrick: Brick Reconstruction from Photographs with Perceptual Fidelity and Buildability. https://arxiv.org/abs/2608.09597

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