{"action":"opened","issue":{"url":"https://api.github.com/repos/sqeazy/sqeazy/issues/15","repository_url":"https://api.github.com/repos/sqeazy/sqeazy","labels_url":"https://api.github.com/repos/sqeazy/sqeazy/issues/15/labels{/name}","comments_url":"https://api.github.com/repos/sqeazy/sqeazy/issues/15/comments","events_url":"https://api.github.com/repos/sqeazy/sqeazy/issues/15/events","html_url":"https://github.com/sqeazy/sqeazy/issues/15","id":194941278,"number":15,"title":"Tile reordering before bitplane shuffle","user":{"login":"psteinb","id":1465603,"avatar_url":"https://avatars.githubusercontent.com/u/1465603?v=3","gravatar_id":"","url":"https://api.github.com/users/psteinb","html_url":"https://github.com/psteinb","followers_url":"https://api.github.com/users/psteinb/followers","following_url":"https://api.github.com/users/psteinb/following{/other_user}","gists_url":"https://api.github.com/users/psteinb/gists{/gist_id}","starred_url":"https://api.github.com/users/psteinb/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/psteinb/subscriptions","organizations_url":"https://api.github.com/users/psteinb/orgs","repos_url":"https://api.github.com/users/psteinb/repos","events_url":"https://api.github.com/users/psteinb/events{/privacy}","received_events_url":"https://api.github.com/users/psteinb/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-12-12T10:40:38Z","updated_at":"2016-12-12T10:40:38Z","closed_at":null,"body":"Just wondering if a tile reordering might boost the lossless compression factor from around 2 to 3? My idea would be to partition a stack into tiles (8 or 16 or 32 cubes) and sort the tiles in increasing order of their median? Of course the mapping needs to be saved for decoding, but I am curious if this \r\n- will increase the sequences of 0 after the bitplane shuffle as we thereby also sort the voxel intensities \r\n- can be implemented very fast and I parallel"}}
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