Supplementary Material of SPoVT: Semantic-Prototype V ariational Transformer for Dense Point Cloud Semantic Completion Sheng-Y u Huang 1 Hao-Y u Hsu 1 Y u-Chiang Frank Wang 1,2 1

Since all our experiments (e.g., semantic completion, surface reconstruction, global/part-wise manipulation) are evaluated on the PCN dataset [ Similarly, we also test the "Chair" and the "Table" models on chairs and tables extracted from the ScanNet [ PoinTr is shown in Figure 2 and Figure 3. Qualitative comparisons of part segmentation are visualized in Figure 5, which shows that our SPoVT correctly completes each part of the point clouds. Table 1: Evaluation of point number distributions in predicted point clouds. We now provide more qualitative visualization results on point cloud completion, surface reconstruction, and part-wise manipulation in Figure 6, Figure 7, and Figure 8, respectively. On the other hand, the Alpha value can be chosen as 0.01 for our results with Note that the first three columns are chairs and the last three columns are tables.Figure 4: Architecture of our proposed Refiner θ Figure 5: Qualitative results of completed point cloud with predicted part labels. Figure 6: Qualitative evaluation of completed point cloud.