Ad
Ad
Ad
Luminous Landscape Forum > Raw & Post Processing, Printing > Digital Image Processing > New Lens Correction Software
Pages: « 1 2 3 [4]   Bottom of Page
Print
Author Topic: New Lens Correction Software  (Read 18447 times)
minnend
Newbie
*
Offline Offline

Posts: 2
« Reply #60 on: January 10, 2010, 02:00:33 AM »
 ReplyReply
regarding jjlphoto's remark, here's some more info one potential gamma/interpolation-related problem: http://www.all-in-one.ee/~dersch/gamma/gamma.html
Logged
Jonathan Wienke
Sr. Member
****
Offline Offline

Posts: 5759



WWW
« Reply #61 on: January 10, 2010, 07:35:47 PM »
 ReplyReply
Quote from: minnend
regarding jjlphoto's remark, here's some more info one potential gamma/interpolation-related problem: http://www.all-in-one.ee/~dersch/gamma/gamma.html

The side effects of the "cure" (interpolating in linear) are much worse than the "disease". Converting to linear gamma doesn't fix the stripe between the green and magenta areas, and with the algorithms I'm using, ringing artifacts become a big problem in dark areas, and a black pixel on a white background upsizes much differently than a white pixel on a black background:

[attachment=19349:int_linear.jpg]

Doing the distortion correction in a non-linear gamma works far better than in linear.
« Last Edit: January 10, 2010, 07:36:51 PM by Jonathan Wienke » Logged
My Personal Blog : Visual Vacations Photography
Jonathan Wienke
Sr. Member
****
Offline Offline

Posts: 5759



WWW
« Reply #62 on: April 21, 2010, 07:05:16 AM »
 ReplyReply
OK, it's been a long time since the last update. I've got the PSF generation and blur correction code working now, but it still needs a lot of fine-tuning before it will be ready for public consumption. Stay tuned...
Logged
My Personal Blog : Visual Vacations Photography
Guldsmed
Newbie
*
Offline Offline

Posts: 9
« Reply #63 on: December 04, 2012, 05:28:47 AM »
 ReplyReply
Is there any news about your project? Still alive?
Logged
francois
Sr. Member
****
Offline Offline

Posts: 5351
« Reply #64 on: December 04, 2012, 06:18:11 AM »
 ReplyReply
Quote from: Guldsmed on December 04, 2012, 05:28:47 AM
Is there any news about your project? Still alive?

Jonathan hasn't been showing any activity here for more than one year…
Logged
Francois
Guldsmed
Newbie
*
Offline Offline

Posts: 9
« Reply #65 on: December 04, 2012, 07:00:49 AM »
 ReplyReply
Oh... I C - thx for the info. Not much chance for a completed project then, I guess...
Logged
francois
Sr. Member
****
Offline Offline

Posts: 5351
« Reply #66 on: December 04, 2012, 07:40:25 AM »
 ReplyReply
Quote from: Guldsmed on December 04, 2012, 07:00:49 AM
Oh... I C - thx for the info. Not much chance for a completed project then, I guess...

You might try to PM Jonathan and see whether he's still alive or not! I wouldn't be too optimistic, though.
Logged
Francois
jeremypayne
Guest
« Reply #67 on: December 07, 2012, 01:50:22 PM »
 ReplyReply
Quote from: francois on December 04, 2012, 07:40:25 AM
You might try to PM Jonathan and see whether he's still alive or not! I wouldn't be too optimistic, though.

 I think he may be back in the employ of the government once again ...
Logged
Pages: « 1 2 3 [4]   Top of Page
Print
Jump to:  

Ad
Ad
Ad