Use max resolution when not moving or training (#1091)

use max resolution when not moving or training

nerfstudio/viewer/server/viewer_utils.py

@@ -672,9 +672,12 @@ def _calculate_image_res(self, camera_object, is_training: bool) -> Optional[Tup
 
         aspect_ratio = camera_object["aspect"]
 
-        image_height = (num_vis_rays / aspect_ratio) ** 0.5
-        image_height = int(round(image_height, -1))
-        image_height = min(self.max_resolution, image_height)
+        if not self.camera_moving and not is_training:
+            image_height = self.max_resolution
+        else:
+            image_height = (num_vis_rays / aspect_ratio) ** 0.5
+            image_height = int(round(image_height, -1))
+            image_height = min(self.max_resolution, image_height)
         image_width = int(image_height * aspect_ratio)
         if image_width > self.max_resolution:
             image_width = self.max_resolution