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+--- Thread: Is there a way to speed this up? Tile matching (/Thread-Is-there-a-way-to-speed-this-up-Tile-matching)
Is there a way to speed this up? Tile matching - trandoductin - 01-18-2018
description of what i am trying to do
So I have a script right now it's doing this
loop through source image for each tile, copy and paste as pattern (difference mode) over top of tile image.
loop through each tile of a visible copy and look at r,g,b using
make selection of the tile.
Code:
r, _, _, _, _, _ = pdb.gimp_histogram(comp_layer,HISTOGRAM_RED,0,255)
g, _, _, _, _, _ = pdb.gimp_histogram(comp_layer,HISTOGRAM_GREEN,0,255)
b, _, _, _, _, _ = pdb.gimp_histogram(comp_layer,HISTOGRAM_BLUE,0,255)and then compose an image using those best match tiles...
what's taking along time right now is this process of selecting the tile and using gimp_histogram...
Is there anyway i could possibly speed this up?
I can't think of one.
RE: Is there a way to speed this up? Tile matching - Ofnuts - 01-19-2018
If you do Filter>Blur>Pixellize you get tiles where the R, G, B channels are the average for the tile (so the same as the values you get from the histogram calls). If you Color>Desaturate that using the "Average" method the gray you obtain is therefore (R+G+B)/3 from which you can obtain R+G+B (if needed) (although it could be better to use the Luminosity, which at that point shouldn't be harder to work with).
RE: Is there a way to speed this up? Tile matching - trandoductin - 01-19-2018
Genius...I'll give it a shot and see if it's faster. Thanks!
After bluring the whole result, and use get pixel to get values instead of histogram.
It runs just over little 50% I am guessing 60% of the time previously so that's a major improvement.
Actually it made huge improvements I took out all the debug and it's now like less than a second a tile instead of 8 seconds...wow.