Search found 5 matches

by quack
2018-10-02T21:27:38-07:00
Forum: Users
Topic: Scanning and colour spaces
Replies: 13
Views: 5039

Re: Scanning and colour spaces

I should mention that using ACDSee the output is a lot closer to what I can achieve from Gimp (differences almost imperceptible were I not currently drawn to differences), than from ImageMagick, but accept that that does not mean that ACDSee and Gimp are more correct. However, they are more pleasing...
by quack
2018-10-02T20:53:19-07:00
Forum: Users
Topic: Scanning and colour spaces
Replies: 13
Views: 5039

Re: Scanning and colour spaces

Dear snibgo and Fred, Thank you very much for your efforts. I used snibgo's ImageMagick command line to produce 'img_agfa.jpg' and can confirm that this is slightly lighter than my original 'image.jpg'. Which is correct (ImageMagick or Gimp) I cannot really determine. One could say that ultimately t...
by quack
2018-10-02T16:04:54-07:00
Forum: Users
Topic: Scanning and colour spaces
Replies: 13
Views: 5039

Re: Scanning and colour spaces

Dear Fred, Thank's for looking into this for me; I appreciate your time. ImageMagick is a great command line tool and where I prefer to do my processing. I will have to post to a Gimp forum to find out what they are doing with 'linear light'. I shall also look closer at ACDSee to make sure that I un...
by quack
2018-10-01T00:34:51-07:00
Forum: Users
Topic: Scanning and colour spaces
Replies: 13
Views: 5039

Re: Scanning and colour spaces

Dear snibgo, Thank you for your reply. I include links to 'image.tif', 'image.jpg' (which is what I would expect), and 'Agfa.icm'. http://202.161.120.48/image.tif http://202.161.120.48/image.jpg http://202.161.120.48/Agfa.icm The process I need to use with Gimp is: 1. Import image.tif 2. Add layer m...
by quack
2018-09-30T14:47:53-07:00
Forum: Users
Topic: Scanning and colour spaces
Replies: 13
Views: 5039

Scanning and colour spaces

I have slides scanned using VueScan, saved as 64-bit TIFFs and what VueScan calls RAW. The infrared channel is stored in the alpha channel. I do it this way because I can re-process (using dust removal, for example) directly from the RAW files without the lengthy 5 to 10 min each scan normally takes...