From f6a23b8eb7b5105c81ba9e321c868f7c5f8bf038 Mon Sep 17 00:00:00 2001
From: jcjackch <877024951@qq.com>
Date: Tue, 24 Oct 2023 17:19:43 +0200
Subject: [PATCH 1/2] Update fisheyecameras.py

Typo fix
---
 pytorch3d/renderer/fisheyecameras.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pytorch3d/renderer/fisheyecameras.py b/pytorch3d/renderer/fisheyecameras.py
index 3da558df3..0c960bfec 100644
--- a/pytorch3d/renderer/fisheyecameras.py
+++ b/pytorch3d/renderer/fisheyecameras.py
@@ -60,7 +60,7 @@ class FishEyeCameras(CamerasBase):
         "world_coordinates",
         "use_radial",
         "use_tangential",
-        "use_tin_prism",
+        "use_thin_prism",
         "device",
         "image_size",
     )

From 8c7e3cf07a82c7dca6b7deea96474bb70d5869bb Mon Sep 17 00:00:00 2001
From: jcjackch <877024951@qq.com>
Date: Thu, 26 Oct 2023 13:01:06 +0200
Subject: [PATCH 2/2] Update fisheyecameras.py

To prevent overflow in fisheye distortion
---
 pytorch3d/renderer/fisheyecameras.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pytorch3d/renderer/fisheyecameras.py b/pytorch3d/renderer/fisheyecameras.py
index 0c960bfec..c7fded663 100644
--- a/pytorch3d/renderer/fisheyecameras.py
+++ b/pytorch3d/renderer/fisheyecameras.py
@@ -171,7 +171,10 @@ def _project_points_batch(
 
         """
         assert points.shape[-1] == 3, "points shape incorrect"
-        ab = points[..., :2] / points[..., 2:]
+        denom = points[..., 2:]
+        denom_sign = denom.sign() + (denom == 0).type_as(denom)
+        denom = denom_sign * torch.clamp(denom.abs(), self.epsilon)
+        ab = points[..., :2] / denom
         uv_distorted = ab
 
         r = ab.norm(dim=-1)