Search found 4 matches

by Bernd Hohmann
2013-09-28T10:23:15-07:00
Forum: Users
Topic: Circle Crop with smooth gradient
Replies: 8
Views: 6191

Re: Circle Crop with smooth gradient

Looking at your script and taking values from it, I tried to reproduce your full resolution results in IM 6.8.7.0 Q16 Mac OSX. My results do not show the extreme stair-stepping. So again I think your anti-aliasing is not working correctly.

Gna.. The problem is, that you're working with some ...
by Bernd Hohmann
2013-09-28T05:29:19-07:00
Forum: Users
Topic: Circle Crop with smooth gradient
Replies: 8
Views: 6191

Re: Circle Crop with smooth gradient


2) I suspect your IM version may have a bug and is not anti-aliasing the -draw command. You never answered what version and platform you are using (or I missed it).

If you want to antialias further

convert -size 320x213 xc:black -fill white \
-draw "translate 160,106.5 circle 0,0 0,106.5 ...
by Bernd Hohmann
2013-09-27T16:39:42-07:00
Forum: Users
Topic: Circle Crop with smooth gradient
Replies: 8
Views: 6191

Re: Circle Crop with smooth gradient

The legendary Fred himself - I feel honored, thanks for helping me.

Testcase in full resolution:

http://201.ag/IMG_8520.JPG is the image in full resolution
http://201.ag/crop is the script to crop the image to http://201.ag/crop_IMG_8520.JPG
http://201.ag/gradient_IMG_8520.JPG was done with ...
by Bernd Hohmann
2013-09-27T15:30:37-07:00
Forum: Users
Topic: Circle Crop with smooth gradient
Replies: 8
Views: 6191

Circle Crop with smooth gradient

I need to do a circle crop on an image with a gradient.

Reason: I'm doing HDR panoramashots with a Sigma 8mm fisheye. And sometimes I have internal reflections of the lense in the image - namely outside the 180° field of view (see image).
http://201.ag/reflections.jpg

Unfortunately the ...