fix small bugs and allow testing on images with aspect-ratio not equal to 1

nerfstudio/models/gaussian_splatting.py

@@ -327,7 +327,7 @@ class GaussianSplattingModel(Model):
                 "max_sh_degree": self.max_sh_degree,
                 "FoVx": fovx,
                 "FoVy": fovy,
-                "image_height": camera.width,
+                "image_height": camera.height,
                 "image_width": camera.width,
                 "world_view_transform": world_view_transform,
                 "full_proj_transform": full_projection_matrix,

nerfstudio/utils/gaussian_utils.py

@@ -136,7 +136,8 @@ def render_from_dict(data : dict, bg_color : torch.Tensor, scaling_modifier = 1.
         projmatrix=data['full_proj_transform'],
         sh_degree=data['active_sh_degree'],
         campos=data['camera_center'],
-        prefiltered=False
+        prefiltered=False,
+        debug=False
     )
 
     rasterizer = GaussianRasterizer(raster_settings=raster_settings)