[IMG152] rewrite gamma filter for new imars3d (!141) · Merge requests · Zhang, Chen / iMars3D · GitLab

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Zhang, Chen requested to merge IMG152_modernize_gamma_filter into next Apr 19, 2022

original Gitlab story: IMG152

This PR introduces the following changes:

setup a new package to store new version of imars3D (rewrite attempt)
add unit test for gamma_filtering
add implementation for gamma_filtering
add new dependencies for downloading example image from scikit-image