Filter > Blur > Average

[dinosaur]

Does anyone know if Filter > Blur > Average or a filter with equivalent functionality is available in 2.9.8? I had hoped to use it in correcting a pronounced color cast.

Thanks much.

[rich2005]

(01-16-2018, 02:23 PM)dinosaur Wrote: Does anyone know if Filter > Blur > Average or a filter with equivalent functionality is available in 2.9.8?  I had hoped to use it in correcting a pronounced color cast.

Thanks much.

Well, AFAIK Blur -> Average is a PS filter, but you are forgiven

This python plugin works with Gimp 2.9 ofn-average-fill.py get it from http://sourceforge.net/projects/gimp-too...s/scripts/ about 12 down.

Digging through my archive, this old one, originally roll film, left in the camera too long in a hot a climate. Bit of a blue cast.



Duplicate the layer, apply ofn-average-fill.py (bottom of edit menu) put the layer into grain-extract mode. 



You can get the same result using the GEGL filter Filters -> Blur -> Pixelise with values maxed-out. The advantage is you can do a little adjustment and see the result straight away on the canvas before commiting.



hope this helps.

[Espermaschine]

Yeah, you can use Pixelise to get the average colour of an image.
Just type in the size-values.

tutorial:

[dinosaur]

Whew, that is a CPU intensive process with a 100 mb tif file. In fact, my 5 year old laptop is in over its head. I could probably figure out how many calculations are needed if I could type in enough zeros. Will try a tiny image tomorrow to see if I can get some usable sample values. However I can see that a desktop machine with a 64 bit OS and cutting edge CPU is going to be on the shopping list.

In the meantime, a big thank you to RIch2005 and Espermaschine for the prompt replies and to Rich2005 for all the helpful detail. I'll report back.

Cheers,
dinosaur