diff --git a/.gitattributes b/.gitattributes
index 0d1ae95..7d4f29b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
 *.parquet filter=lfs diff=lfs merge=lfs -text
 *.pdf filter=lfs diff=lfs merge=lfs -text
+*.glb filter=lfs diff=lfs merge=lfs -text
diff --git a/find_cute_box_with_image.ipynb b/find_cute_box_with_image.ipynb
index 0c31d3d..67a4385 100644
--- a/find_cute_box_with_image.ipynb
+++ b/find_cute_box_with_image.ipynb
@@ -2,30 +2,34 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 33,
    "metadata": {},
    "outputs": [],
    "source": [
     "from datetime import datetime\n",
     "from pathlib import Path\n",
-    "from typing import Any, Final, TypeAlias, cast, TypedDict\n",
+    "from typing import Any, Final, Optional, TypeAlias, TypedDict, Union, cast\n",
+    "from dataclasses import dataclass\n",
     "\n",
     "import cv2\n",
     "import numpy as np\n",
+    "import orjson\n",
+    "import trimesh\n",
+    "from beartype import beartype\n",
     "from cv2 import aruco\n",
     "from cv2.typing import MatLike\n",
+    "from jaxtyping import Float, Int, Num, jaxtyped\n",
     "from loguru import logger\n",
     "from matplotlib import pyplot as plt\n",
     "from numpy.typing import ArrayLike\n",
     "from numpy.typing import NDArray as NDArrayT\n",
-    "import orjson\n",
     "\n",
     "NDArray: TypeAlias = np.ndarray"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 34,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -38,7 +42,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 35,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -50,7 +54,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 36,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -62,7 +66,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 37,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -84,7 +88,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 38,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -117,14 +121,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
-    "class Marker(TypedDict):\n",
+    "@jaxtyped(typechecker=beartype)\n",
+    "@dataclass\n",
+    "class Marker:\n",
     "    id: int\n",
-    "    center: NDArray\n",
-    "    corners: NDArray\n",
+    "    center: Num[NDArray, \"2\"]\n",
+    "    corners: Num[NDArray, \"4 2\"]\n",
     "\n",
     "\n",
     "output_markers: list[Marker] = []\n",
@@ -155,14 +161,14 @@
     "    for m, i in zip(markers, ids):\n",
     "        center = np.mean(m, axis=0).astype(int)  # type: ignore\n",
     "        output_markers.append(\n",
-    "            {\n",
-    "                \"id\": i[0],\n",
-    "                \"center\": flip_y(normalize_point(center), 1),\n",
-    "                \"corners\": np.array([flip_y(normalize_point(c), 1) for c in m]),\n",
-    "            }\n",
+    "            Marker(\n",
+    "                id=int(i[0]),\n",
+    "                center=flip_y(normalize_point(center), 1),\n",
+    "                corners=np.array([flip_y(normalize_point(c), 1) for c in m]),\n",
+    "            )\n",
     "        )\n",
     "\n",
-    "with open(\"output/aruco_3d_coords.json\", \"wb\") as f:\n",
+    "with open(\"output/aruco_2d_uv_coords_normalized.json\", \"wb\") as f:\n",
     "    f.write(orjson.dumps(output_markers, option=orjson.OPT_SERIALIZE_NUMPY))"
    ]
   },
@@ -186,17 +192,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 43,
    "metadata": {},
    "outputs": [],
    "source": [
-    "from typing import Optional, Union\n",
-    "\n",
-    "import numpy as np\n",
-    "import trimesh\n",
-    "from jaxtyping import Float, Int, Num, jaxtyped\n",
-    "from beartype import beartype\n",
-    "\n",
     "@jaxtyped(typechecker=beartype)\n",
     "def interpolate_uvs_to_3d(\n",
     "    uv_points: Num[NDArray, \"N 2\"],\n",
@@ -284,6 +283,22 @@
     "        epsilon=epsilon,\n",
     "    )"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 46,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "m = trimesh.load_mesh(\"sample/standard_box.glb\")\n",
+    "def marker_to_3d_coords(marker: Marker, mesh: trimesh.Trimesh):\n",
+    "    uv_points = marker.corners\n",
+    "    return interpolate_uvs_to_3d_trimesh(uv_points, mesh)\n",
+    "\n",
+    "results = [marker_to_3d_coords(marker, m) for marker in output_markers]\n",
+    "id_to_3d_coords = {marker.id: result for marker, result in zip(output_markers, results)}\n",
+    "# note that the glb is Y up (but in blender it's Z up)"
+   ]
   }
  ],
  "metadata": {
diff --git a/interactive_example.py b/interactive_example.py
new file mode 100644
index 0000000..132cedf
--- /dev/null
+++ b/interactive_example.py
@@ -0,0 +1,18 @@
+# %%
+import numpy as np
+
+
+# %%
+
+# %% [markdown]
+# # Extract the 3D coordinates of the ArUco markers from the image
+#
+# 1. Load the image
+# 2. Detect the ArUco markers
+# 3. Get the 3D coordinates of the markers
+# 4. Save the 3D coordinates to a file
+
+
+# %%
+
+# %%
diff --git a/sample/standard_box.glb b/sample/standard_box.glb
new file mode 100644
index 0000000..4bb9327
--- /dev/null
+++ b/sample/standard_box.glb
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:882875c0cca0881ad71151562f275d1ca66f1ddf2866b23e712a2974acf52df9
+size 232064