Update README.md

README.md

@@ -1,4 +1,14 @@
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-license: apache-2.0
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-Projected-ShapeNet55/34 dataset proposed in [AdaPoinTr(https://github.com/yuxumin/PoinTr)]
+Projected-ShapeNet55/34 dataset proposed in [AdaPoinTr](https://github.com/yuxumin/PoinTr)
+
+Download file `project_shapenet.tar_pcd.tar` and unzip it with `tar -xvf project_shapenet_pcd.tar`
+
+Rename the `pcd` directory to `project_shapenet_pcd`
+
+There are 55 categories in total and the dataset structure is like this
+
+```
+├──projected_partial_noise/
+│  ├── 02691156
+│  ├── 02818832
+│  ├── .......
+```