diff --git a/nerfstudio/data/datamanagers/dreamfusion_datamanager.py b/nerfstudio/data/datamanagers/dreamfusion_datamanager.py
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+++ b/nerfstudio/data/datamanagers/dreamfusion_datamanager.py
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+# Copyright 2022 The Nerfstudio Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Data manager for dreamfusion
+"""
+
+from __future__ import annotations
+
+import random
+from abc import abstractmethod
+from copy import deepcopy
+from dataclasses import dataclass, field
+from typing import Dict, List, Optional, Tuple, Type, Union
+
+import numpy as np
+import numpy.typing as npt
+import torch
+import torch.nn.functional as F
+import tyro
+from PIL import Image
+from rich.progress import Console
+from torch import nn
+from torch.nn import Parameter
+from torch.utils.data import Dataset
+from torch.utils.data.distributed import DistributedSampler
+from torchtyping import TensorType
+from typing_extensions import Literal
+
+import nerfstudio.utils.profiler as profiler
+from nerfstudio.cameras.camera_optimizers import CameraOptimizerConfig
+from nerfstudio.cameras.cameras import Cameras
+from nerfstudio.cameras.rays import RayBundle
+from nerfstudio.configs.base_config import InstantiateConfig
+from nerfstudio.configs.config_utils import to_immutable_dict
+from nerfstudio.data.datamanagers.base_datamanager import (
+    DataManager,
+    VanillaDataManager,
+    VanillaDataManagerConfig,
+)
+from nerfstudio.data.dataparsers.base_dataparser import DataparserOutputs
+from nerfstudio.data.dataparsers.blender_dataparser import BlenderDataParserConfig
+from nerfstudio.data.dataparsers.dnerf_dataparser import DNeRFDataParserConfig
+from nerfstudio.data.dataparsers.friends_dataparser import FriendsDataParserConfig
+from nerfstudio.data.dataparsers.instant_ngp_dataparser import (
+    InstantNGPDataParserConfig,
+)
+from nerfstudio.data.dataparsers.nerfstudio_dataparser import NerfstudioDataParserConfig
+from nerfstudio.data.dataparsers.nuscenes_dataparser import NuScenesDataParserConfig
+from nerfstudio.data.dataparsers.phototourism_dataparser import (
+    PhototourismDataParserConfig,
+)
+from nerfstudio.data.dataparsers.record3d_dataparser import Record3DDataParserConfig
+from nerfstudio.data.datasets.base_dataset import InputDataset
+from nerfstudio.data.pixel_samplers import PixelSampler
+from nerfstudio.data.scene_box import SceneBox
+from nerfstudio.data.utils.data_utils import get_image_mask_tensor_from_path
+from nerfstudio.data.utils.dataloaders import (
+    CacheDataloader,
+    FixedIndicesEvalDataloader,
+    RandIndicesEvalDataloader,
+)
+from nerfstudio.data.utils.nerfstudio_collate import nerfstudio_collate
+from nerfstudio.engine.callbacks import TrainingCallback, TrainingCallbackAttributes
+from nerfstudio.engine.optimizers import AdamOptimizerConfig
+from nerfstudio.model_components.ray_generators import RayGenerator
+from nerfstudio.utils.misc import IterableWrapper
+
+CONSOLE = Console(width=120)
+
+
+class TrivialDataset(InputDataset):
+    """A trivial dataset with blank images for the viewer"""
+
+    def __init__(self, cameras: Cameras):
+        self.size = cameras.size
+        self.cameras = cameras
+        self.alpha_color = None
+        self.scene_box = SceneBox(torch.Tensor([[-1, -1, -1], [1, 1, 1]]))
+        self.mask_filenames = None
+        self.metadata = to_immutable_dict({})
+
+    def __len__(self):
+        return self.size
+
+    def __getitem__(self, index: int) -> Dict:
+        return {"image": torch.cat([torch.ones(128, 256, 3), torch.zeros(128, 256, 3)], dim=0), "image_idx": index}
+
+
+def random_train_pose(
+    size,
+    resolution,
+    device,
+    radius_mean=1.0,
+    radius_std=0.1,
+    central_rotation_range=[0, 360],
+    vertical_rotation_range=[-90, 10],
+    focal_range=[0.75, 1.35],
+    jitter_std=0.01,
+):
+    """generate random poses from an orbit camera
+    Args:
+        size: batch size of generated poses.
+        device: where to allocate the output.
+        radius: camera radius
+        central_rotation_range: amount that we rotate around the center of the object
+        vertical_rotation_range: amount that we allow the cameras to pan up and down from horizontal
+    Return:
+        poses: [size, 4, 4]
+    """
+
+    vertical_rotation_range = [vertical_rotation_range[0] + 90, vertical_rotation_range[1] + 90]
+    # This is the uniform sample on the part of the sphere we care about where 0 = 0 degrees and 1 = 360 degrees
+    sampled_uniform = (
+        torch.rand(size) * (vertical_rotation_range[1] - vertical_rotation_range[0]) + vertical_rotation_range[0]
+    ) / 180
+    vertical_rotation = torch.arccos(1 - 2 * sampled_uniform)
+    central_rotation = torch.deg2rad(
+        torch.rand(size) * (central_rotation_range[1] - central_rotation_range[0]) + central_rotation_range[0]
+    )
+
+    rot_z = torch.stack(
+        [
+            torch.cos(central_rotation),
+            -torch.sin(central_rotation),
+            torch.zeros_like(central_rotation),
+            torch.sin(central_rotation),
+            torch.cos(central_rotation),
+            torch.zeros_like(central_rotation),
+            torch.zeros_like(central_rotation),
+            torch.zeros_like(central_rotation),
+            torch.ones_like(central_rotation),
+        ],
+        dim=-1,
+    ).reshape(size, 3, 3)
+
+    rot_x = torch.stack(
+        [
+            torch.ones_like(vertical_rotation),
+            torch.zeros_like(vertical_rotation),
+            torch.zeros_like(vertical_rotation),
+            torch.zeros_like(vertical_rotation),
+            torch.cos(vertical_rotation),
+            -torch.sin(vertical_rotation),
+            torch.zeros_like(vertical_rotation),
+            torch.sin(vertical_rotation),
+            torch.cos(vertical_rotation),
+        ],
+        dim=-1,
+    ).reshape(size, 3, 3)
+
+    # Default directions are facing in the -z direction, so origins should face opposite way
+    origins = torch.stack([torch.tensor([0, 0, 1])] * size, dim=0)
+    origins = (origins * radius_mean) + (origins * (torch.randn((origins.shape)) * radius_std))
+    R = torch.bmm(rot_z, rot_x)  # Want to have Rx @ Ry @ origin
+    print(torch.bmm(R, origins.unsqueeze(-1)).shape, (torch.randn((size, 3, 1)) * jitter_std).shape)
+    t = torch.bmm(R, origins.unsqueeze(-1)) + torch.randn((size, 3, 1)) * jitter_std
+    camera_to_worlds = torch.cat([R, t], dim=-1)
+
+    focals = torch.rand(size) * (focal_range[1] - focal_range[0]) + focal_range[0]
+
+    cameras = Cameras(
+        camera_to_worlds=camera_to_worlds,
+        fx=focals * resolution,
+        fy=focals * resolution,
+        cx=resolution / 2,
+        cy=resolution / 2,
+    ).to(device)
+
+    return cameras, torch.rad2deg(vertical_rotation), torch.rad2deg(central_rotation)
+
+
+@dataclass
+class DreamFusionDataManagerConfig(VanillaDataManagerConfig):
+    """Configuration for data manager instantiation; DataManager is in charge of keeping the train/eval dataparsers;
+    After instantiation, data manager holds both train/eval datasets and is in charge of returning unpacked
+    train/eval data at each iteration
+    """
+
+    _target: Type = field(default_factory=lambda: DreamFusionDataManager)
+    train_resolution: int = 64
+    """Training resolution"""
+    eval_resolution: int = 256
+    """Evaluation resolution"""
+    num_eval_angles: int = 256
+    """Number of evaluation angles"""
+    train_images_per_batch: int = 1
+    """Number of images per batch for training"""
+    eval_images_per_batch: int = 1
+    """Number of images per batch for evaluation"""
+    prompt: str = "A surfer sitting on a surfboard in the sky watching the sunset."
+    """Prompt to optimize for."""
+
+
+class DreamFusionDataManager(VanillaDataManager):  # pylint: disable=abstract-method
+    """Basic stored data manager implementation.
+
+    This is pretty much a port over from our old dataloading utilities, and is a little jank
+    under the hood. We may clean this up a little bit under the hood with more standard dataloading
+    components that can be strung together, but it can be just used as a black box for now since
+    only the constructor is likely to change in the future, or maybe passing in step number to the
+    next_train and next_eval functions.
+
+    Args:
+        config: the DataManagerConfig used to instantiate class
+    """
+
+    config: DreamFusionDataManagerConfig
+
+    def __init__(
+        self,
+        config: DreamFusionDataManagerConfig,
+        device: Union[torch.device, str] = "cpu",
+        test_mode: Literal["test", "val", "inference"] = "val",
+        world_size: int = 1,
+        local_rank: int = 0,
+        **kwargs,  # pylint: disable=unused-argument
+    ):
+        self.config = config
+        self.device = device
+        self.world_size = world_size
+        self.local_rank = local_rank
+        self.sampler = None
+        self.test_mode = test_mode
+        self.test_split = "test" if test_mode in ["test", "inference"] else "val"
+        self.dataparser = self.config.dataparser.setup()
+
+        self.eval_cameras, _, _ = random_train_pose(
+            self.config.num_eval_angles,
+            self.config.eval_resolution,
+            device=device,
+            # radius_mean=1,
+            # radius_std=0.1,
+            # central_rotation_range=[180, 180],
+            # vertical_rotation_range=[0, 0],
+            # focal_range=[1, 1],
+            # jitter_std=0.1,
+        )
+
+        self.train_dataset = TrivialDataset(self.eval_cameras)
+        self.eval_dataset = TrivialDataset(self.eval_cameras)
+
+        DataManager.__init__(self)
+
+    def next_train(self, step: int) -> Tuple[RayBundle, Dict]:
+        """Returns the next batch of data from the train dataloader."""
+
+        self.train_count += 1
+
+        if step > 2000:
+            cameras, _, _ = random_train_pose(
+                self.config.train_images_per_batch, self.config.train_resolution, device=self.device
+            )
+
+            ray_bundle = cameras.generate_rays(torch.tensor([[i] for i in range(self.config.train_images_per_batch)]))
+            return ray_bundle, {"initialization": False}
+
+        cameras, vertical_rotation, central_rotation = random_train_pose(
+            self.config.train_images_per_batch,
+            self.config.train_resolution,
+            device=self.device,
+            radius_mean=1.5,
+            radius_std=0,
+            focal_range=[1, 1],
+            vertical_rotation_range=[-180, 180],
+            jitter_std=0,
+        )
+        ray_bundle = cameras.generate_rays(torch.tensor([[i] for i in range(self.config.train_images_per_batch)]))
+
+        return ray_bundle, {"vertical": vertical_rotation, "central": central_rotation, "initialization": True}
+
+    def next_eval(self, step: int) -> Tuple[RayBundle, Dict]:
+        """Returns the next batch of data from the eval dataloader."""
+        self.eval_count += 1
+
+        if step > 2000:
+            cameras, _, _ = random_train_pose(
+                self.config.train_images_per_batch, self.config.train_resolution, device=self.device
+            )
+
+            ray_bundle = cameras.generate_rays(torch.tensor([[i] for i in range(self.config.eval_images_per_batch)]))
+            return ray_bundle, {"initialization": False}
+
+        cameras, vertical_rotation, central_rotation = random_train_pose(
+            self.config.eval_images_per_batch,
+            self.config.eval_resolution,
+            device=self.device,
+            radius_mean=1.5,
+            radius_std=0,
+            focal_range=[1, 1],
+            vertical_rotation_range=[-180, 180],
+            jitter_std=0,
+        )
+        ray_bundle = cameras.generate_rays(torch.tensor([[i] for i in range(self.config.train_images_per_batch)]))
+
+        return ray_bundle, {"vertical": vertical_rotation, "central": central_rotation}
+
+    def next_eval_image(self, step: int) -> Tuple[int, RayBundle, Dict]:
+        raise ValueError("No more eval images")
+
+    def get_param_groups(self) -> Dict[str, List[Parameter]]:  # pylint: disable=no-self-use
+        """Get the param groups for the data manager.
+        Returns:
+            A list of dictionaries containing the data manager's param groups.
+        """
+        param_groups = {}
+
+        return param_groups