add tip

README.md

@@ -68,6 +68,6 @@ Install with `pip install -e .`.
 
 To get started with examples, see the following notebooks:
 
-* [sample_text_to_3d.ipynb](shap_e/examples/sample_text_to_3d.ipynb) - sample a 3D model, conditioned on a text prompt
-* [sample_image_to_3d.ipynb](shap_e/examples/sample_image_to_3d.ipynb) - sample a 3D model, conditioned on an synthetic view image.
+* [sample_text_to_3d.ipynb](shap_e/examples/sample_text_to_3d.ipynb) - sample a 3D model, conditioned on a text prompt.
+* [sample_image_to_3d.ipynb](shap_e/examples/sample_image_to_3d.ipynb) - sample a 3D model, conditioned on a synthetic view image. To get the best result, you should remove background from the input image.
 * [encode_model.ipynb](shap_e/examples/encode_model.ipynb) - loads a 3D model or a trimesh, creates a batch of multiview renders and a point cloud, encodes them into a latent, and renders it back. For this to work, install Blender version 3.3.1 or higher, and set the environment variable `BLENDER_PATH` to the path of the Blender executable.

shap_e/examples/sample_image_to_3d.ipynb

@@ -48,6 +48,7 @@
     "batch_size = 4\n",
     "guidance_scale = 3.0\n",
     "\n",
+    "# To get the best result, you should remove the background and show only the object of interest to the model.\n",
     "image = load_image(\"example_data/corgi.png\")\n",
     "\n",
     "latents = sample_latents(\n",