DeltaVLM

This repository hosts the pretrained DeltaVLM checkpoint from the paper DeltaVLM: Interactive Remote Sensing Image Change Analysis via Instruction-guided Difference Perception.

Contents

• checkpoint_best.pth: pretrained DeltaVLM checkpoint
• configs/evaluate.yaml: example evaluation config used in the project codebase

Important note

This checkpoint does not include the frozen base LLM weights. The original project loads a Vicuna-7B-v1.5-compatible model separately and then applies the DeltaVLM checkpoint on top.

In the local reproduction environment, the Vicuna path was substituted with a compatible llavav1.5-7b directory for loading.

Code and dataset

• Code: https://github.com/hanlinwu/DeltaVLM
• Dataset annotations: https://huggingface.co/datasets/hlwu/changechat-105k
• Image source: https://github.com/Chen-Yang-Liu/LEVIR-CC-Dataset

Example

After cloning the code repo and preparing the required base model plus dataset files, evaluation can be run with:

python infer_subtasks.py --cfg_path configs/evaluate.yaml --n_samples 2

License

Please follow the license terms of this project repository, the referenced dataset, and the required upstream base model.