Search found 6 matches

by bonobo2000
2017-12-16T15:46:10-07:00
Forum: Bugs
Topic: draw circle radius
Replies: 4
Views: 4360

draw circle radius

I use convert -size 8x8 xc: -draw "translate 0,0 circle 0,0 3,0" ./bla.png I would expect a circle with a radius of 3 pixels. However, I am getting is a circle with 4 pixels radius. While this might or not be a bug, it certainly doesn't fit the second example shown in the documentation in http://www...
by bonobo2000
2015-07-06T16:52:41-07:00
Forum: Users
Topic: indexing last pixel
Replies: 3
Views: 2170

Re: indexing last pixel

thx a lot for your reply, the info is added in the initial post. basically what I am trying to do is to floodfill using the four corners as seed and the actual color values of these pixels as the color value. if somebody could give me a nice simple example, it would save me considerable amount of ti...
by bonobo2000
2015-07-06T15:49:33-07:00
Forum: Users
Topic: indexing last pixel
Replies: 3
Views: 2170

indexing last pixel

hi, I would like to use -floodfill -0-0 command and use the last pixel (pixel located at the last column, last row) as seed in a batch of 10^6 images. I am wondering how I could achieve this afar? Machine: OSX 10.9 Version: ImageMagick 6.8.9-8 Q16 x86_64 2014-12-29 http://www.imagemagick.org Copyrig...
by bonobo2000
2011-01-21T04:27:13-07:00
Forum: Users
Topic: B/W Halftone Dither
Replies: 27
Views: 85737

Re: B/W Halftone Dither

fmw42 wrote:Sorry this overlapped with Anthony's much better solution. One note, is that you can write your own function to replace the slow -fx using the MagickFilterKit-1.0.0. In fact, I wrote something similar to Anthony's -fx expression for color reduction.
great information thank you!
by bonobo2000
2011-01-21T04:22:13-07:00
Forum: Users
Topic: B/W Halftone Dither
Replies: 27
Views: 85737

Re: B/W Halftone Dither

Thank you for the script. though It could probably use some reformatting and extra comments. I edited the version and inserted more comments for documentation. Please note that it is now completely obsolete as a script. First the shade of a circle to radius is non-linear, but a squared effect. radi...
by bonobo2000
2011-01-19T17:28:11-07:00
Forum: Users
Topic: B/W Halftone Dither
Replies: 27
Views: 85737

Re: B/W Halftone Dither

Hi there thanks everybody for sharing all this information. I thought it might be useful to share how I landed here. my task today was to transform an image to another image using circle as the basis function. Basically I would like to imitate an image with circles of different sizes tiled on the im...