diff --git a/test_generation.py b/test_generation.py
index 5299b08..7d35c54 100644
--- a/test_generation.py
+++ b/test_generation.py
@@ -476,12 +476,31 @@ def generate(model, opt):
             #     None,
             #     None
             #     )
-            visualize_voxels(
-                os.path.join(str(Path(opt.eval_path).parent), 'x.png'),
-                gen[:64],
-                1,
-                0.5,
-            )
+            # visualize_voxels(
+            #     os.path.join(str(Path(opt.eval_path).parent), 'x.png'),
+            #     gen[:64],
+            #     1,
+            #     0.5,
+            # )
+    
+
+            # visualize using matplotlib
+            import matplotlib.pyplot as plt
+            import matplotlib.cm as cm
+            import matplotlib
+            matplotlib.use('TkAgg')
+            for idx, pc in enumerate(gen[:64]):
+                print(f"Visualizing point cloud {idx}...")
+                fig = plt.figure()
+                ax = fig.add_subplot(111, projection='3d')
+                ax.scatter(pc[:,0], pc[:,1], pc[:,2], c=pc[:,2], cmap=cm.jet)
+                ax.set_aspect('equal')
+                ax.axis('off')
+                # ax.set_xlim(-1, 1)
+                # ax.set_ylim(-1, 1)
+                # ax.set_zlim(-1, 1)
+                plt.show()
+                plt.close()
 
         samples = torch.cat(samples, dim=0)
         ref = torch.cat(ref, dim=0)