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多尺度动态双轮廓网格重建方法

Multi-Scale Dynamic Dual Contouring Mesh Reconstruction Method

  • 摘要: 针对二值体素数据信息密度低且离散性强, 难以直接适用于高质量表面重建, 尤其在复杂几何结构的表达和长距离边缘特征的捕获上存在明显不足, 易出现表面锯齿化和尖锐细节丢失的问题, 提出一种多尺度动态双轮廓网格重建方法. 首先通过多尺度结构逐步精细化网格, 并结合残差提取模块对低尺度采样结果进行修正, 在增强局部细节表达的同时保持多尺度几何结构的准确性; 然后引入动态特征提取模块捕获长距离边缘特征, 缓解信息稀疏带来的锯齿化和细节丢失问题. 在ABC和Thingi10k数据集上的实验结果表明, 所提方法取得良好的重建效果, 在视觉和量化评估方面均展现出优于现有方法的性能, 与当前主流的HRE-NDC方法相比, 倒角距离(CD)平均降低3.5%, F-Score平均提升3.4%, 表明该方法有效地减少边缘锯齿状与曲面不平滑的现象, 显著地提高了网格重建的整体质量.

     

    Abstract: Reconstructing high-quality meshes from binary voxel data is a long-standing problem in computer graphics. Existing approaches typically rely on feature extraction with fixed receptive fields and geometric priors. However, the low information density and strong discreteness of binary voxels make them ill-suited for directly reconstructing high-quality surfaces, particularly when representing complex geometric struc-tures and capturing long-range edge features. This often leads to stair-step artifacts and the loss of sharp details.  To address this problem, this paper proposes a multi-scale dynamic dual contouring mesh recon-struction method. First, using a multi-scale structure, the mesh is progressively refined, and a residual ex-traction module is introduced to correct the low-resolution sampling results, thus enhancing local detail expression while preserving the accuracy of multi-scale geometric structures. Then, a dynamic feature ex-traction module is introduced to capture long-range edge features, helping to alleviate jaggedness and de-tail loss caused by sparse information. Experimental results show that the proposed method achieves ex-cellent performance, with the average CD decreased by 3.5% compared with HRE-NDC and the F-Score in-creased by an average of 3.4% relative to HRE-NDC on the ABC and Thingi10k datasets. It outperforms existing methods in both visual and quantitative evaluations, effectively reducing edge jaggedness and surface irregularities, and significantly improving the overall quality of mesh reconstruction.

     

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