---
license: other
task_categories:
- image-to-image
tags:
- seismic-inversion
- acoustic-impedance
- marmousi
- overthrust
---

# SAII-CLDM Data

This dataset package supports the official SAII-CLDM open-source implementation.

Payload files:

```text
Pwavevelocity.mat
marmousi/marmousi_256_train.npz
overthrust/Overthrust_trueimp.mat
prepare_marmousi_256_train.py
vgg.pth
```

`Pwavevelocity.mat` is the official Marmousi velocity model file used by the default Stage 1 VQGAN multi-scale training config and the experimental Diffusers VQGAN trainer.

`marmousi_256_train.npz` is derived from the official Marmousi model and contains `256 x 256` log-velocity patches with flip and elastic-deformation augmentations. It is used by Stage 2 training and the experimental Diffusers LDDPM trainer.

`Overthrust_trueimp.mat` is the Overthrust benchmark file used by the evaluation code.

`prepare_marmousi_256_train.py` is a minimal data preparation script documenting the Marmousi-derived training data recipe. It expects `Pwavevelocity.mat` and writes the training `.npz` file.

`vgg.pth` is the LPIPS linear-weight checkpoint used by the VQGAN perceptual loss. The training code copies it to `tmp/vgg.pth` automatically when present in this data directory.

Example `.env` entries for the code repository:

```bash
IMPROVED_DIFFUSION_MINE_DIR=./data/saii-cldm-data
MARMousi_NPZ=./data/saii-cldm-data/marmousi/marmousi_256_train.npz
OVERTHRUST_DATA_DIR=./data/saii-cldm-data/overthrust
```