mirror of
https://github.com/nerfstudio-project/nerfstudio.git
synced 2026-11-14 03:44:02 +08:00
Ethan Weber
146332cfb6
* in progress. camera_indices broken * faster dataloader. starting on pixel sampler logic * imagesampler and pixelsampler * lint and black * continuing merge * pytest working * fixed docs * docs * minor changes
269 lines
8.0 KiB
Plaintext
269 lines
8.0 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "3c00934d-0f14-4c1a-a563-94d627b377e5",
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"metadata": {},
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"source": [
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"## Notebook to visualize a dataset\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "b15dfdc1-5054-40bc-9631-4c7426eecfd9",
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"metadata": {},
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"outputs": [],
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"source": [
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"from notebook_imports import *\n",
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"\n",
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"import torch\n",
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"from torch.utils.data import DataLoader\n",
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"\n",
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"from pyrad.nerf.dataset.image_dataset import ImageDataset, PanopticImageDataset\n",
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"from pyrad.nerf.image_sampler import CacheImageSampler\n",
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"from pyrad.nerf.pixel_sampler import PixelSampler\n",
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"from pyrad.nerf.dataset.utils import get_dataset_inputs\n",
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"from pyrad.nerf.ray_generator import RayGenerator\n",
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"from pyrad.nerf.colliders import SceneBoundsCollider, AABBBoxCollider\n",
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"from pyrad.structures.rays import RayBundle\n",
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"from pyrad.utils.io import get_absolute_path\n",
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"from pyrad.viewer.plotly import get_line_segments_from_lines\n",
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"from pyrad.structures.cameras import get_camera_model\n",
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"from pyrad.utils.misc import get_dict_to_torch, instantiate_from_dict_config\n",
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"\n",
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"\n",
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"from hydra import compose, initialize\n",
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"from omegaconf import open_dict\n",
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"import pprint\n",
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"from tqdm import tqdm\n",
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"import random"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "7fe7478d",
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"metadata": {},
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"outputs": [],
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"source": [
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"with initialize(version_base=None, config_path=\"../configs\"):\n",
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" config = compose(config_name=\"default_setup.yaml\")\n",
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"dataset_inputs = get_dataset_inputs(**config.data.dataset, split=\"train\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "001bdf3b-60a0-4bb2-9f88-ae36f2036c80",
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"metadata": {},
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"outputs": [],
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"source": [
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"device = \"cpu\"\n",
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"\n",
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"train_image_dataset = instantiate_from_dict_config(\n",
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" config.data.image_dataset,\n",
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" image_filenames=dataset_inputs.image_filenames,\n",
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" downscale_factor=dataset_inputs.downscale_factor,\n",
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" semantics=dataset_inputs.semantics,\n",
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" alpha_color=dataset_inputs.alpha_color,\n",
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") # ImageDataset\n",
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"train_image_sampler = CacheImageSampler(\n",
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" train_image_dataset,\n",
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" num_samples_to_collate=len(train_image_dataset)\n",
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" if config.data.image_sampler.num_images_to_sample_from == 0\n",
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" else config.data.image_sampler.num_images_to_sample_from,\n",
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" num_times_to_repeat_images=config.data.image_sampler.num_times_to_repeat_images,\n",
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" device=device if config.data.image_sampler.move_to_graph_device else \"cpu\",\n",
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") # ImageSampler\n",
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"train_pixel_sampler = PixelSampler(\n",
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" num_rays_per_batch=config.data.pixel_sampler.num_rays_per_batch, keep_full_image=True\n",
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") # PixelSampler\n",
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"\n",
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"ray_generator = RayGenerator(dataset_inputs.intrinsics, dataset_inputs.camera_to_world)\n",
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"\n",
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"iter_train_image_sampler = iter(train_image_sampler)\n",
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"num_batches = 10\n",
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"for _ in tqdm(range(num_batches)):\n",
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" image_batch = next(iter_train_image_sampler)\n",
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" batch = train_pixel_sampler.sample(image_batch)\n",
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" ray_bundle = ray_generator.forward(batch[\"indices\"])\n",
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" break"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "19b85061-a1b0-458b-9d00-96cde6f37dca",
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"metadata": {},
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"outputs": [],
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"source": [
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"media.show_image(train_image_dataset.get_image(10), height=200)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "b90f4a78-4b8b-4615-a127-7d7579874765",
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"metadata": {},
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"outputs": [],
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"source": [
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"def show_batch(batch):\n",
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" # set the color of the sampled rays\n",
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" print(batch.keys())\n",
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" c, y, x = [i.flatten() for i in torch.split(batch[\"local_indices\"], 1, dim=-1)]\n",
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" batch[\"image\"][c, y, x] = 0.0\n",
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"\n",
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" # batch[\"image\"] is num_images, h, w, 3\n",
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" images = torch.split(batch[\"image\"], 1, dim=0)\n",
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" image_list = [image[0] for image in images]\n",
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" image = torch.cat(image_list, dim=1) # cat along the width dimension\n",
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"\n",
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" # the black pixels are rays\n",
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" media.show_image((image * 255).to(torch.uint8))\n",
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"\n",
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"\n",
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"def sample_and_show_batch():\n",
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" image_batch = next(iter_train_image_sampler)\n",
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" batch = train_pixel_sampler.sample(image_batch)\n",
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" show_batch(batch)\n",
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" return batch"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "09e625f7-fa1f-4b3f-acd4-bddfcdf7cd9f",
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"metadata": {},
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"outputs": [],
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"source": [
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"batch = sample_and_show_batch()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "fd8cf48a-823e-4395-99ca-eda4c2026440",
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"metadata": {},
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"outputs": [],
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"source": [
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"ray_indices = batch[\"indices\"]\n",
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"ray_bundle = ray_generator(ray_indices)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "646107c0-f979-408a-941f-98b2ad3e07f7",
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"metadata": {},
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"outputs": [],
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"source": [
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"skip = 1\n",
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"size = 8\n",
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"data = []\n",
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"data += [\n",
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" go.Scatter3d(\n",
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" x=ray_generator.camera_to_world[::skip, 0, 3],\n",
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" y=ray_generator.camera_to_world[::skip, 1, 3],\n",
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" z=ray_generator.camera_to_world[::skip, 2, 3],\n",
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" mode=\"markers\",\n",
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" name=\"origins\",\n",
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" marker=dict(color=\"rgba(0, 0, 0, 1)\", size=size),\n",
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" )\n",
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"]"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "fc627f05",
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"metadata": {},
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"outputs": [],
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"source": [
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"scene_bounds_collider = AABBBoxCollider(dataset_inputs.scene_bounds)\n",
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"intersected_ray_bundle = scene_bounds_collider(ray_bundle)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "c73ba9bd-2902-4c46-b592-bc87ac8c71f6",
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"metadata": {},
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"outputs": [],
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"source": [
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"lines = torch.stack(\n",
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" [\n",
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" intersected_ray_bundle.origins + intersected_ray_bundle.directions * intersected_ray_bundle.nears[..., None],\n",
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" intersected_ray_bundle.origins + intersected_ray_bundle.directions * intersected_ray_bundle.fars[..., None],\n",
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" ],\n",
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" dim=1,\n",
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").tolist() # (num_rays, 2, 3)\n",
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"lines = torch.tensor(random.sample(lines, k=100))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "991df6a2-efe3-4412-ba41-9a244e2e90cc",
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"metadata": {},
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"outputs": [],
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"source": [
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"data += get_line_segments_from_lines(lines)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "0b2404d8-ca9e-4630-9f67-7c68d19458cb",
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"metadata": {},
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"outputs": [],
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"source": [
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"layout = go.Layout(\n",
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" autosize=False,\n",
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" width=1000,\n",
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" height=1000,\n",
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" margin=go.layout.Margin(l=50, r=50, b=100, t=100, pad=4),\n",
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" scene=go.layout.Scene(\n",
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" aspectmode=\"data\",\n",
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" camera=dict(up=dict(x=0, y=0, z=1), center=dict(x=0, y=0, z=0), eye=dict(x=1.25, y=1.25, z=1.25)),\n",
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" ),\n",
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")\n",
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"fig = go.Figure(data=data, layout=layout)\n",
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"fig.show()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "fd04703a-aa50-45e4-95fd-4d881ff18d61",
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"interpreter": {
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"hash": "4a749acc7d255f078aee52e0584cc77b3cb5aaed1b3a7407ec4262c1bf6cb526"
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},
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.13"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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