Found on:
https://www.cns.nyu.edu/~eero/STEERPYR/

https://web.archive.org/web/20190719170640/https://www.cns.nyu.edu/~eero
/STEERPYR/

https://github.com/LabForComputationalVision/matlabPyrTools


Files from:
https://www.cns.nyu.edu/pub/eero/steerpyr.tar.gz

https://codeload.github.com/LabForComputationalVision/matlabPyrTools/zip/master