Linter fix: remove lambda and use numpy.rad2deg

nerfstudio/cameras/camera_optimizers.py

@@ -19,10 +19,10 @@
 from __future__ import annotations
 
 import functools
-import math
 from dataclasses import dataclass, field
 from typing import Literal, Optional, Type, Union
 
+import numpy
 import torch
 import tyro
 from jaxtyping import Float, Int
@@ -182,11 +182,10 @@ def get_correction_matrices(self):
     def get_metrics_dict(self, metrics_dict: dict) -> None:
         """Get camera optimizer metrics"""
         if self.config.mode != "off":
-            rad2deg = lambda x: x / math.pi * 180.0
             metrics_dict["camera_opt_translation_max"] = self.pose_adjustment[:, :3].norm(dim=-1).max()
             metrics_dict["camera_opt_translation_mean"] = self.pose_adjustment[:, :3].norm(dim=-1).mean()
-            metrics_dict["camera_opt_rotation_mean"] = rad2deg(self.pose_adjustment[:, 3:].norm(dim=-1).mean())
-            metrics_dict["camera_opt_rotation_max"] = rad2deg(self.pose_adjustment[:, 3:].norm(dim=-1).max())
+            metrics_dict["camera_opt_rotation_mean"] = numpy.rad2deg(self.pose_adjustment[:, 3:].norm(dim=-1).mean())
+            metrics_dict["camera_opt_rotation_max"] = numpy.rad2deg(self.pose_adjustment[:, 3:].norm(dim=-1).max())
 
     def get_param_groups(self, param_groups: dict) -> None:
         """Get camera optimizer parameters"""