Synthesir: Synthesizing infrared bands using the Wide-Field Imager and MSI (Multispectral Imager) optical sensors

WFI patches contain Blue (1), Green (2), Red (3), and NIR (4) bands, while MSI patches include Red (1), Broad NIR (2), Narrow NIR (3), SWIR-1 (4), and SWIR-2 (5) bands. The Synthesir dataset includes temporally matched and near-temporal observations (0–7 days), along with continuous burned-area probability masks.

A dedicated Sentinel-2 subset is also provided for training and evaluating deep learning models for burned-area semantic segmentation. By combining multi-resolution imagery, temporal variability, and pixel-level annotations, the dataset supports research on image-to-image translation, domain adaptation, weak-label learning, and deep learning-based Earth observation applications.