Test with bunny

colored_sphere.obj

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:af0623db05615dfdab7a8b430a9a9d280cb04494851279f776570e4648e81d2c
-size 124159899
+oid sha256:c4219279fe8712e11ba282f2b451da1134422b9075ff859ab1d1ee6595979c3d
+size 5056223

pc_to_mesh.py

@@ -43,16 +43,16 @@ bbox = pcd.get_axis_aligned_bounding_box()
 
 mesh = mesh.crop(bbox)
 
-# colors = np.asarray(mesh.vertex_colors)  # Nx3 array, values in [0,1]
-# factor = 2  # >1 to lighten, <1 to darken
-# colors = np.clip(colors * factor, 0, 1)  # keep in [0,1]
+colors = np.asarray(mesh.vertex_colors)  # Nx3 array, values in [0,1]
+factor = 1.5  # >1 to lighten, <1 to darken
+colors = np.clip(colors * factor, 0, 1)  # keep in [0,1]
 
 # # Stretch each channel to [0,1]
 # min_val = colors.min(axis=0)
 # max_val = np.quantile(colors, q=0.95, axis=0)
 # print(min_val, max_val)
 # colors = (colors - min_val) / (max_val - min_val + 1e-8)
-# mesh.vertex_colors = o3d.utility.Vector3dVector(colors)
+mesh.vertex_colors = o3d.utility.Vector3dVector(colors)
 
 
 # --- Save mesh as .obj with per-vertex colors ---