Search found 8 matches

by OmahaWxMan
2019-05-23T11:01:10-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

I just updated the previous image's URL with the one from my shared Google Album and it's working now.

Thanks again for all the help!
by OmahaWxMan
2019-05-23T07:26:33-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

Thanks for editing my above post, I'm a bit confused though, I've only submitted HTTPS images and they seem to be showing up fine. However, it may be due to my permissions in Google Photos, I moved the two photos to a different album and they should be OK now. Thank you, GeeMack, for the new convert...
by OmahaWxMan
2019-05-22T10:51:32-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

Hi Everyone, Last question for this thread from me, hopefully. After more testing I realized that I can't entirely drop the black channel from the CYMK separation. If you've ever looked at the color bars that the National Weather Service uses on their radar after the magenta/pink band comes white fo...
by OmahaWxMan
2019-05-21T06:26:21-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

Thanks again for the additional examples. I've tested all three and the results from the time command, when applied to the overall script that creates the imagery, add little overhead. Here's one more example from last night; if you happen to live between west Texas and Missouri I hope you are OK. h...
by OmahaWxMan
2019-05-17T11:45:34-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

Yes, GIFs are too big though, I'm exporting the JPG from the source software @ 100% quality, which ends up being around 25MB for that image. I think it'll be "good enough for government." My aim is a pretty picture that's useful but not science quality.
by OmahaWxMan
2019-05-17T11:19:09-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

All, Thank you so much. I've incorporated the one-liner into another script and the results are wonderful. I'll share a low-resolution image here. The high resolution is 10000x6000, but this should suffice. https://lh3.googleusercontent.com/NjcELkjE7iIZOZdVyInydMkoFu_lT-WEJO7VyTFkTOMm_iiUViQntQlmVbn...
by OmahaWxMan
2019-05-17T09:33:15-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Re: Removing All Shades of Grey from an Image

Sure, sorry, I should have read the forum posting guide first. CentOS 7, Version: ImageMagick 6.7.8-9 2019-02-01 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC Features: OpenMP Before: https://lh3.googleusercontent.com/RU5BZv3Wz9ll03tOmz6vFEf4jXNmF08SEidG0RF...
by OmahaWxMan
2019-05-17T09:05:59-07:00
Forum: Users
Topic: Removing All Shades of Grey from an Image
Replies: 20
Views: 7606

Removing All Shades of Grey from an Image

Hi All, I've been hitting the google books and am trying to figure out how to remove all shades of grey from an image. (ie preserve all "colors") I wrote a bash script that works, but is slow and doesn't scale, when each image is exponentially larger. (250 -> 500 -> 1000 -> 2000 -> 4000 -> 8000 pixe...