Search found 3 matches

by Rich_Morin
2018-05-10T17:15:43-07:00
Forum: Users
Topic: Extracting a subset of a large TIFF image.
Replies: 1
Views: 1234

Extracting a subset of a large TIFF image.

I'm trying to extract an uncompressed rectangular subset of a large TIFF image. It may be working, but I'm getting a concerning nastygram. Background - The image is High Resolution Orthoimagery (HRO) from USGS (https://lta.cr.usgs.gov/high_res_ortho). - It contains 12815 (rows) * 14632 (cols) of RGB...
by Rich_Morin
2018-05-03T18:32:28-07:00
Forum: Developers
Topic: detailed layout of MPC format?
Replies: 3
Views: 3310

Re: detailed layout of MPC format?

mpc.c is a bit over 1500 LOC; I can work my way through this if need be, but I'd rather avoid that pain. However, if someone familiar with the code is willing to dig out the details, I'd be happy to write up a wiki page, etc.
by Rich_Morin
2018-05-03T15:24:58-07:00
Forum: Developers
Topic: detailed layout of MPC format?
Replies: 3
Views: 3310

detailed layout of MPC format?

I plan to do image analysis on some large TIFF images. These are distributed (by USGS) as High Resolution Orthoimagery (HRO). A typical file might contain 12815 x 14632 (RGBA) pixels. I'd like to convert these into MPC (Magick Persistent Cache) format, then map them into memory in my own (Elixir) ap...