ABCD dataset

ABCD Dataset Overview

Dataset Description

• Name: ABCD (AIST Building Change Detection) Dataset
• Purpose: To build and evaluate post‑tsunami building damage detection systems, specifically to identify whether buildings have been washed away.
• Content: Contains 8,506 fixed‑scale and 8,444 resized building image pairs; each pair includes pre‑ and post‑tsunami aerial patches centered on a target building.
• Image Source: RGB aerial imagery from Japan's Tohoku region captured before and after the 2011 Great East Japan Earthquake.
• Image Resolution: Pre‑earthquake images at 40 cm resolution; post‑earthquake images originally at 12 cm (resampled to 40 cm).
• Image Format: Fixed‑scale images are 160 × 160 pixels; resized images are uniformly cropped to 128 × 128 pixels based on building size.
• Label Source: Labels derived from on‑site surveys conducted by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), which assessed over 220,000 buildings in the affected area.

Dataset Structure

• Directory Layout:
  • fixed-scale/: Fixed‑scale image pairs.
    • patch-pairs/: Stores fixed‑scale pairs in .tif format.
    • 5fold-list/: CSV files for 5‑fold cross‑validation.
  • resized/: Resized image pairs.
    • patch-pairs/: Stores resized pairs in .tif format.
    • 5fold-list/: CSV files for 5‑fold cross‑validation.
• File Format: Each .tif file contains six channels; the first three are pre‑tsunami RGB, the last three are post‑tsunami RGB.
• Label Format: In the CSV, the first column is the file name and the second column is the class label ("1" for "washed away", "0" for "survived").

Download Information

• Download Link: ABCD Dataset Download
• File Size: 2.1 GB
• Terms of Use: Please read the Terms of Use before downloading.

Contact

• Contact Person: Aito Fujita
• Institution: National Institute of Advanced Industrial Science and Technology (AIST), Japan
• Email: fujita.713[at]aist.go.jp