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| Author: | dinasset [ Sat Jul 04, 2015 1:30 am ] |
| Post subject: | (python-fu) wrap-map-bucket |
Hi Ofnuts (and any other python/script guru around here). I'm using (inside of one of my scripts) the wrap-map-bucket python plug-in. As long as I used it on a moderately small image, no problem; today I launched it on a moderately big image (around 4000*3000); response time was half an hour! I know this plug-in had always performance problems (inside the description it is written : # v0.1: performance improvements, fix partially transparent pixels # v0.2: some more performance improvements (thanks to saulgoode) now my question is: is there room for new performance improvements? thanks |
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| Author: | ofnuts [ Sat Jul 04, 2015 8:10 am ] |
| Post subject: | Re: (python-fu) wrap-map-bucket |
Yes, rewrite in C(*). Each pixel of width in the border requires the creation of two selections plus a bucket fill. If you are filling a wide border, you can try to use fewer and wider strides, and then blur the result (Gaussian or spread noise). (*) There could be other optimizations, but if SG or I would have thought about them, they would ave been implemented. |
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| Author: | dinasset [ Sat Jul 04, 2015 10:37 am ] |
| Post subject: | Re: (python-fu) wrap-map-bucket |
OK, Ofnuts, I understand. I will do the following (the same I do with other my scripts which are using long running filters, like some G'MIC ones): - rescale the image at the beginning (user option) - perform all the processing (including your filter) on the rescaled image - rescale back the image at the end |
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