RefRef: A Synthetic Dataset and Benchmark for Reconstructing Scenes with Refractive and Reflective Objects

Overview

RefRef is a synthetic dataset and benchmark for reconstructing scenes with Refractive-Reflective objects. Our dataset includes 50 objects with varying complexity, from single-material to multi-material compositions with different Indices of Refraction (IoRs) and transparency levels. Each object is placed in two distinct scenes featuring ornate textures and patterns, resulting in 100 scenes in total.

Directory Structure

RefRef_Dataset/
├── README.md
├── dataset_info/                 # Metadata and dataset description files
│   ├── object_list.txt
│   ├── scene_list.txt
│   └── IoR_info.json             # IoR values mapped to each object
├── image_data/                   # Rendered images, depth maps, and masks for each object
│   ├── textured_cube_scene/
│   │   └── {simple_shapes, complex_shapes, household_items, lab_equipment}/
│   │       └── {object_name}/
│   │           ├── train/        # Training set
│   │           │   ├── r_0.png              # RGB image
│   │           │   ├── r_0_depth_0000.png   # Depth map
│   │           │   ├── r_0_mask_0000.png    # Mask
│   │           │   ├── r_1.png
│   │           │   ├── r_1_depth_0000.png
│   │           │   ├── r_1_mask_0000.png
│   │           │   └── ...
│   │           ├── val/          # Validation set
│   │           ├── test/         # Testing set
│   │           ├── transforms_train.json
│   │           ├── transforms_val.json
│   │           └── transforms_test.json
│   ├── textured_sphere_scene/
│       └── ...
├── mesh_files/                   # 3D mesh files (.ply format) for each object
│   └── {simple_shapes, complex_shapes, household_items, lab_equipment}/
│       └── ...
├── blender_files/                # Blender source files for each object, organised by scene
│   ├── bgpanels_cube/            # Background panels for cube scene
│   ├── bgpanels_sphere/          # Background panels for sphere scene
│   └── {textured_cube_scene, textured_sphere_scene}/
│       └── ...
└── benchmarks/                   # Benchmark results from various methods
    ├── oracle_method/
    ├── Zip-NeRF/
    ├── Ray Deformation/
    ├── MS-NeRF/
    ├── NeUS/
    └── ...

Object and Scenes

The dataset includes 50 objects categorised into four groups based on their complexity, material composition, and shape:

simple_shapes/: Basic geometries with single material.
complex_shapes/: Intricate geometries with single material, such as sculptures.
household_items/: Objects with single or multiple materials, including items like wine glasses, plastic bottles, and teapots.
lab_equipment/: Laboratory objects that include single and multi-material compositions, such as beakers and test tubes.

Each object is placed in two distinct scenes:

textured_cube_scene/: Objects placed within a textured cube environment.
textured_sphere_scene/: Objects placed within a textured sphere environment.

IoR Information

A single JSON file IoR_info.json is be provided in the dataset_info/ directory, which maps each component of each object to its Index of Refraction (IoR) values.

Example format for IoR_info.json:

{
  "cube": 1.5,
  "diamond": 2.418,
  "wine_glass": {{"glass": 1.5, "alcohol": 1.36},
  "water_pitcher": {"glass": 1.5, "water": 1.333, "ice": 1.309}
  ...
}