data/README.md

ADE20K Sky-Water-Person Split Files

These split files list ADE20K images that contain at least one of the target classes (sky, water, person).

Format

Each line is a path relative to the ADE20K image root (ADEChallengeData2016/images/):

validation/ADE_val_00000001.jpg
training/ADE_train_00000001.jpg

Expected Dataset Layout

ADEChallengeData2016/
├── images/
│   ├── training/
│   │   ├── ADE_train_00000001.jpg
│   │   └── ...
│   └── validation/
│       ├── ADE_val_00000001.jpg
│       └── ...
└── annotations/
    ├── training/
    │   ├── ADE_train_00000001.png
    │   └── ...
    └── validation/
        ├── ADE_val_00000001.png
        └── ...

Class Mapping

ADE20K raw labels → skywater 4-class scheme:

ADE20K ID	ADE20K Name	Target Class
3	sky	1 (Sky)
13	person	3 (Person)
22	water	2 (Water)
27	sea	2 (Water)
61	lake	2 (Water)
105	pond	2 (Water)
110	fountain	2 (Water)
114	waterfall	2 (Water)
129	river	2 (Water)
(all others)	—	0 (Background)

Obtaining ADE20K

Download from: https://groups.csail.mit.edu/vision/datasets/ADE20K/

Use the ADEChallengeData2016 subset (training + validation).