An MS-SSIM inspired metric for assessing imputation accuracy in spatial transcriptomics data. MSSI works by iterativly pooling the graph representing the spatial data and relies on the graph-coarsening package (https://github.com/loukasa/graph-coarsening) which can be installed through the commands:
git clone git@github.com:loukasa/graph-coarsening.git
cd graph-coarsening
pip install .
And then mssi can be installed via pip:
pip install mssi