This dataset contains SRTM 30-meter resolution elevation data encoded in the OZT2 tile format.
Compression: ~93% smaller than Terrarium PNG
Prediction: Gradient-based prediction (left neighbor + vertical gradient)
Quantization: Adaptive bit-depth (8/10/12/16-bit per channel)
Codec: Zstd q3 (30× faster encode than Brotli, same decode speed)
Each tile is 256×256 pixels in Web… See the full description on the dataset page:
https://huggingface.co/datasets/aliasfox/srtm30m-ozt2-v2.
