Wilber
02.12.2008, 19:20
http://meetthegimp.org/wp-content/uploads/2008/12/77.jpgToday we are going into Math-Land, but not too deep - I promise.But first there is a visit to the Oakland Technology Exchange West (http://www.otxwest.org/index.html) - a non profit that gives new life to (not so)old harware.
The Convolution Matrix (http://docs.gimp.org/en/plug-in-convmatrix.html) lives in Math-Land. It is the backbone of a lot of filter plugins. It’s fun to play with if you have understood the basics and lost your fear. One example of a filter done with this is the Pencil Shade Filter (http://nerds-central.blogspot.com/2007/02/writing-new-and-exciting-filters-for.html) by Alex Turner (http://nerds-central.blogspot.com/)
I forgot to talk about the “Border” options. “Extend” just adds a virtual black border around the source image. “Wrap” takes the pixels from the opposite corner and wraps them around.
The matrix in the image has no deeper meaning, it’s just some random numbers. http://meetthegimp.org/wp-includes/images/smilies/icon_wink.gif
My lens replacement surgery went well and I am recovering fast. Thanks for all the good wishes!
http://i.creativecommons.org/l/by-sa/2.0/de/88x31.png (http://creativecommons.org/licenses/by-sa/2.0/de/) This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License (http://creativecommons.org/licenses/by-sa/2.0/de/).
Weiterlesen... (http://meetthegimp.org/episode-077-convoluting-the-matrix/)
The Convolution Matrix (http://docs.gimp.org/en/plug-in-convmatrix.html) lives in Math-Land. It is the backbone of a lot of filter plugins. It’s fun to play with if you have understood the basics and lost your fear. One example of a filter done with this is the Pencil Shade Filter (http://nerds-central.blogspot.com/2007/02/writing-new-and-exciting-filters-for.html) by Alex Turner (http://nerds-central.blogspot.com/)
I forgot to talk about the “Border” options. “Extend” just adds a virtual black border around the source image. “Wrap” takes the pixels from the opposite corner and wraps them around.
The matrix in the image has no deeper meaning, it’s just some random numbers. http://meetthegimp.org/wp-includes/images/smilies/icon_wink.gif
My lens replacement surgery went well and I am recovering fast. Thanks for all the good wishes!
http://i.creativecommons.org/l/by-sa/2.0/de/88x31.png (http://creativecommons.org/licenses/by-sa/2.0/de/) This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License (http://creativecommons.org/licenses/by-sa/2.0/de/).
Weiterlesen... (http://meetthegimp.org/episode-077-convoluting-the-matrix/)